[Bug 57567] New: 3.7 radeonfb broken on efivga screens

[Bug 57567] New: 3.7 radeonfb broken on efivga screens

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

          Priority: medium
            Bug ID: 57567
          Assignee: dri-devel@lists.freedesktop.org
           Summary: 3.7 radeonfb broken on efivga screens
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: bobahu4@gmail.com
          Hardware: Other
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Radeon
           Product: DRI

Ubuntu 12.10
MacPro3,1

stock 3.5 kernel and 3.7-rcX ppa kernel

booting via efi with grub2

ati cards have broken framebuffer on 3.7 (all is fine on 3.5)

tried 2600xt, 6870, 6970 (all have efi part in rom, showing efi boot screen)

on 3.7, when radeonfb activates, I see for a moment two sides of screen (left
and right) swapped (not mirrored), then(when X start) only very few lines on
top of screen is actualy showing something(I can see part of mouse pointer
there), rest is filled with one color.

Same result with all cards I mentioned.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #1 from Alex Deucher <agd5f@yahoo.com> ---
Can you bisect?  Please also attach your xorg log and dmesg output.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #2 from Vladimir <bobahu4@gmail.com> ---
Created attachment 70606
  --> https://bugs.freedesktop.org/attachment.cgi?id=70606&action=edit
3.5.0 dmesg

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #3 from Vladimir <bobahu4@gmail.com> ---
Created attachment 70607
  --> https://bugs.freedesktop.org/attachment.cgi?id=70607&action=edit
3.7 dmesg

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #4 from Vladimir <bobahu4@gmail.com> ---
Created attachment 70608
  --> https://bugs.freedesktop.org/attachment.cgi?id=70608&action=edit
Xorg log on 3.5 kernel

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[Bug 57567] 3.7 radeonfb broken on efivga screens

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #5 from Vladimir <bobahu4@gmail.com> ---
Created attachment 70609
  --> https://bugs.freedesktop.org/attachment.cgi?id=70609&action=edit
Xorg log on 3.7 kernel

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[Bug 57567] 3.7 radeonfb broken on efivga screens

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #6 from Vladimir <bobahu4@gmail.com> ---
Added logs with 3.5 kernel (where it works fine) and 3.7 kernel

videocard - 6870, 1920x1080 display.

Video of what's happening -
http://www.youtube.com/watch?v=-m3geT3RMXM&feature=g-upl

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #7 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Could this be related to bug 56139? Description is similar to what is shown in
recorded boot process videos.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #8 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
In fact, Vladimir, could you edit your grub entry and see if there is "set
gfxpayload=keep". If so, change it to "set gfxpayload=text" or remove the line
completely. If it solves your boot issue, this would be a start. Could you also
test suspend/resume if it fixes your boot process?

>From your posted video, I'm pretty sure this is what I also see in bug 56139.
You could check if the same commit shows up to be the culprit.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #9 from Vladimir <bobahu4@gmail.com> ---
I disabled that line (here it was inside a function) before commiting this bug,
due to another, probably ubuntu-specific bug -
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1069452

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #10 from Vladimir <bobahu4@gmail.com> ---
Some news which makes it easier to isolate the bug

ubuntu updated kernel to 3.5.0-22 and bug appeared on this kernel
3.5.0-21 - no bug

looks like they added some upstream changes.

here is list of changes 21 to 22 from their deb pkg for kernel -
http://pastebin.com/4uUWUtLV

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #11 from Alex Deucher <agd5f@yahoo.com> ---
this looks like it may be a duplicate of bug 59431.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #12 from Vladimir <bobahu4@gmail.com> ---
I found the exact commit that causes this bug

http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-quantal.git;a=commit;h=8f53b5444a25b5be3bfe0164316f9bc7845279c9

drm/radeon: properly handle mc_stop/mc_resume on evergreen+ (v2)

BugLink: http://bugs.launchpad.net/bugs/1091251

commit 62444b7462a2b98bc78d68736c03a7c4e66ba7e2 upstream.

- Stop the displays from accessing the FB
- Block CPU access
- Turn off MC client access

This should fix issues some users have seen, especially
with UEFI, when changing the MC FB location that result
in hangs or display corruption.

v2: fix crtc enabled check noticed by Luca Tettamanti

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[ herton: adjust context ]
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>

Hope you guys can fix it

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

Alexandre Demers <alexandre.f.demers@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.freedesktop.or
                   |                            |g/show_bug.cgi?id=55692,
                   |                            |https://bugs.freedesktop.or
                   |                            |g/show_bug.cgi?id=56139

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

Alexandre Demers <alexandre.f.demers@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|https://bugs.freedesktop.or |
                   |g/show_bug.cgi?id=55692     |

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #13 from Alex Deucher <agd5f@yahoo.com> ---
Does this patch help?
http://cgit.freedesktop.org/~agd5f/linux/commit/?h=drm-fixes-3.8&id=bb588820ef421c6098dca1fec29c3b347f1c8c19

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #14 from Vladimir <bobahu4@gmail.com> ---
No, that doesn't fix it. still the same

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #15 from Alex Deucher <agd5f@yahoo.com> ---
Does adding:
udelay(100);
at the end of evergreen_mc_stop() help?

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #16 from Vladimir <bobahu4@gmail.com> ---
didn't help either


btw, reverting that commit(62444b7462a2b98bc78d68736c03a7c4e66ba7e2) fixed
3.8-rc5 for me. finally ogl 3.0 :D

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

Florian Mickler <florian@mickler.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |florian@mickler.org

--- Comment #17 from Florian Mickler <florian@mickler.org> ---
A patch referencing this bug report has been merged in Linux v3.8-rc7:

commit ed39fadd6df01095378e499fac3674883f16b853
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Thu Jan 31 09:00:52 2013 -0500

    drm/radeon/evergreen+: wait for the MC to settle after MC blackout

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #18 from Vladimir <bobahu4@gmail.com> ---
That patch didn't help ass I wrote earlier.

The only thing that helps 3.7/3.8 kernel is reverting
62444b7462a2b98bc78d68736c03a7c4e66ba7e2 commit

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #19 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 77383
  --> https://bugs.freedesktop.org/attachment.cgi?id=77383&action=edit
possible fix

Does this kernel patch (against 3.9) help?

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

Alexandre Demers <alexandre.f.demers@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.freedesktop.or
                   |                            |g/show_bug.cgi?id=43655

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #20 from Vladimir <bobahu4@gmail.com> ---
Created attachment 77406
  --> https://bugs.freedesktop.org/attachment.cgi?id=77406&action=edit
new dmesg with drm.debug=14

It's a little bit better now, framebuffer is always shifted. (previously
framebuffer usualy was lost, or messed up). it's 3.9-rc5 + patch

I've also tried 3.8.5+patch, and saw no difference to just 3.8.5, just saying.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #21 from Vladimir <bobahu4@gmail.com> ---
Created attachment 77407
  --> https://bugs.freedesktop.org/attachment.cgi?id=77407&action=edit
screenshot of 3.9

screenshot of what happens

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #77407|text/plain                  |image/jpeg
          mime type|                            |

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #22 from Vladimir <bobahu4@gmail.com> ---
I've just tested vanilla 3.9-rc5, to be sure that it's actually your patch that
make things a little bit better, not 3.9 kernel itself.

unpatched 3.9-rc5 - same ersult as 3.7/3.8 kernel, so yeah, it's definetly a
patch.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #23 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #21)
> Created attachment 77407 [details]
> screenshot of 3.9
> 
> screenshot of what happens

I don't have a picture as neat as yours. I also saw a change in the display,
but my display is flickering after the first few vertical lines (only the first
few lines are stable, but they are still shifted as in your screenshot).

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #77383|0                           |1
        is obsolete|                            |

--- Comment #24 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 77441
  --> https://bugs.freedesktop.org/attachment.cgi?id=77441&action=edit
updated patch

Does this patch work any better?

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #25 from Vladimir <bobahu4@gmail.com> ---
I have strange results

few notes first, 3.8-ati is 3.8.5 kernel + reverted
62444b7462a2b98bc78d68736c03a7c4e66ba7e2

3.9-rc5_patched is  3.9-rc5 with your latest patch

3.8 - ubuntu vanilla 3.8.5

so, here is all results:

1) cold boot, boot 3.9-rc5_patched - same screen as with 3.8 (bad)
2) boot macosx, reboot, boot 3.9-rc5_patched - same screen as with 3.8
3) boot 3.8-ati, reboot, boot 3.9-rc5_patched - result like on previous
screenshot I've posted, horizontal shift is always different 

I didnt test 3.9 with your first patch with all cases.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #26 from Vladimir <bobahu4@gmail.com> ---
Ah, and without patch it is always same as with 3.8.
So patch matters.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 605 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #77441|0                           |1
        is obsolete|                            |

--- Comment #27 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 77602
  --> https://bugs.freedesktop.org/attachment.cgi?id=77602&action=edit
updated patch

Does this variant work any better?

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #28 from Vladimir <bobahu4@gmail.com> ---
Created attachment 77625
  --> https://bugs.freedesktop.org/attachment.cgi?id=77625&action=edit
New screenshot

It actually became worse, hard to replicate scenario with shifted screen(most
of time looks like 3.8), and then it panics on reboot. Sshot of panic attached.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 591 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #77602|0                           |1
        is obsolete|                            |

--- Comment #29 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 77705
  --> https://bugs.freedesktop.org/attachment.cgi?id=77705&action=edit
possible fix

Does this patch help?

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 336 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #30 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 77706
  --> https://bugs.freedesktop.org/attachment.cgi?id=77706&action=edit
additional fix

Apply this along with attachment 77705.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 549 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #31 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #30)
> Created attachment 77706 [details] [review]
> additional fix
> 
> Apply this along with attachment 77705 [details] [review].

Using a Cayman 6950 with both patches didn't help over here. Tried two times,
two times where the screen was shifted (like in Vladimir's screenshot). First
time flickering, second only shifted.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 356 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #32 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 77743
  --> https://bugs.freedesktop.org/attachment.cgi?id=77743&action=edit
additional fix

Try this one in addition to the previous two (apply all 3).

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 367 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #33 from Vladimir <bobahu4@gmail.com> ---
Tried all three patches, still same, shifted after 3.8-ati reboot.

and same as 3.8 after cold start.

btw, am I supposed to apply it against 3.9-rc5 or 3.9-rc6, or it doesn't matter
?

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 313 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #34 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #33)
> btw, am I supposed to apply it against 3.9-rc5 or 3.9-rc6, or it doesn't
> matter ?

Doesn't matter.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 270 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #35 from Alex Deucher <agd5f@yahoo.com> ---
Are there any "frame never updated!" messages in your dmesg with the patches
applied?

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 365 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #36 from Vladimir <bobahu4@gmail.com> ---
Created attachment 77761
  --> https://bugs.freedesktop.org/attachment.cgi?id=77761&action=edit
dmesg with 3 patches

Looks like there is none.

dmesg from boot with sshifted screen.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #37 from Alex Deucher <agd5f@yahoo.com> ---
When the display is shifted, does a dpms cycle fix it?

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 205 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #38 from Vladimir <bobahu4@gmail.com> ---
How to do dpms cycle ?

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 339 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #39 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #38)
> How to do dpms cycle ?

On the console, just wait for the screen to blank.  In X:
xset dpms force off
will force a dpms cycle.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 497 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #40 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #39)
> (In reply to comment #38)
> > How to do dpms cycle ?
> 
> On the console, just wait for the screen to blank.  In X:
> xset dpms force off
> will force a dpms cycle.

That would valid if we were able to log in X. Is there a way to do it if we are
still in the console?

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 656 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #41 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #40)
> (In reply to comment #39)
> > (In reply to comment #38)
> > > How to do dpms cycle ?
> > 
> > On the console, just wait for the screen to blank.  In X:
> > xset dpms force off
> > will force a dpms cycle.
> 
> That would valid if we were able to log in X. Is there a way to do it if we
> are still in the console?

I think you can adjust the console blanking with setterm.  Can you start X and
force a dpms cycle even if the screen is garbled?

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 981 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #42 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #41)
> (In reply to comment #40)
> > (In reply to comment #39)
> > > (In reply to comment #38)
> > > > How to do dpms cycle ?
> > > 
> > > On the console, just wait for the screen to blank.  In X:
> > > xset dpms force off
> > > will force a dpms cycle.
> > 
> > That would valid if we were able to log in X. Is there a way to do it if we
> > are still in the console?
> 
> I think you can adjust the console blanking with setterm.  Can you start X
> and force a dpms cycle even if the screen is garbled?

X starts, but I'm never getting to the log screen. Once X is started, if I go
into console and come back, only my mouse pointer is being displayed correctly,
the background stays as what was in the console. I suppose something is hanging
or crashing X.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #43 from Vladimir <bobahu4@gmail.com> ---
Exactly same happens here

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 283 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #44 from Alex Deucher <agd5f@yahoo.com> ---
Does disabling acceleration help?

Option "NoAccel" "True"

In the device section of you xorg.conf

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 462 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #45 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #44)
> Does disabling acceleration help?
> 
> Option "NoAccel" "True"
> 
> In the device section of you xorg.conf

I was able to log in, launch "xset dpms force off". My screen turned off. After
waking it up, the display was still shifted.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #46 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 77808
  --> https://bugs.freedesktop.org/attachment.cgi?id=77808&action=edit
temporary workaround

Apply this on top of the previous patches.  It's a hack to workaround the issue
until I can sort out what is going on with the hw guys.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #47 from Vladimir <bobahu4@gmail.com> ---
That works.

Will any of these four patches land in 3.9 kernel ?

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #48 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #47)
> That works.
> 
> Will any of these four patches land in 3.9 kernel ?

Possibly.  I'm hoping to get hear back from the hw guys early next week to see
if I can get teh existing code to work as it's supposed to.  If not, I'll just
send these patches upstream for now.  If they don't make 3.9 final, they'll
show up via the stable kernel stream.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 1569 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #49 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Vladimir, do you see a page fault in your dmesg after applying the four
patches? Something that would look like:
[    8.727726] AMD-Vi: Event logged [IO_PAGE_FAULT device=01:00.0 domain=0x0016
address=0x000000f800041000 flags=0x0010]
[    8.727737] AMD-Vi: Event logged [IO_PAGE_FAULT device=01:00.0 domain=0x0016
address=0x000000f800042400 flags=0x0010]
[    8.727750] AMD-Vi: Event logged [IO_PAGE_FAULT device=01:00.0 domain=0x0016
address=0x000000f800041040 flags=0x0010]
[    8.727753] AMD-Vi: Event logged [IO_PAGE_FAULT device=01:00.0 domain=0x0016
address=0x000000f800041080 flags=0x0010]
[    8.727756] AMD-Vi: Event logged [IO_PAGE_FAULT device=01:00.0 domain=0x0016
address=0x000000f800041240 flags=0x0010]
[    8.727759] AMD-Vi: Event logged [IO_PAGE_FAULT device=01:00.0 domain=0x0016
address=0x000000f8000410c0 flags=0x0010]
[    8.727762] AMD-Vi: Event logged [IO_PAGE_FAULT device=01:00.0 domain=0x0016
address=0x000000f800041280 flags=0x0010]
[    8.727764] AMD-Vi: Event logged [IO_PAGE_FAULT device=01:00.0 domain=0x0016
address=0x000000f800041100 flags=0x0010]
[    8.727767] AMD-Vi: Event logged [IO_PAGE_FAULT device=01:00.0 domain=0x0016
address=0x000000f8000412c0 flags=0x0010]
[    8.727770] AMD-Vi: Event logged [IO_PAGE_FAULT device=01:00.0 domain=0x0016
address=0x000000f800041140 flags=0x0010]


Alex, is this expected for the workaround?

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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[-- Attachment #1.1: Type: text/plain, Size: 448 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #50 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Created attachment 77915
  --> https://bugs.freedesktop.org/attachment.cgi?id=77915&action=edit
Page Fault with four patches applied

AMD-Vi -> IO PAGE FAULTS in dmesg when using 3.9-rc6 with the four patches
applied (77705, 77706, 77743, 77808).

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #51 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #49)
> 
> Alex, is this expected for the workaround?

No.  So it appears turning off the displays doesn't help either :/

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #52 from Vladimir <bobahu4@gmail.com> ---
I don't have these messages, all is quiet here with 3.9-rc5 + 4 patches.

6870

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #53 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #51)
> (In reply to comment #49)
> > 
> > Alex, is this expected for the workaround?
> 
> No.  So it appears turning off the displays doesn't help either :/

Well, it does help: the screen switches from GRUB to kernel correctly set
(displaying the console), then the screen flashes for a moment (one white flash
instead of one blue flash when the reported bug happens), comes back to normal
in console (where there is now the AMD-Vi IO PAGE FAULT messages) and continues
to work even after Xorg is started.

A difference between Vladimir and I is we don't have the same video card (6950
over here).

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #54 from Vladimir <bobahu4@gmail.com> ---
Just tested with 6970, still fine, no AMD-Vi messages in dmesg.

I have gfxmode/gfxpayload commented out from grub.cfg, maybe that's the
difference between your and mine setups.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #55 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #54)
> Just tested with 6970, still fine, no AMD-Vi messages in dmesg.
> 
> I have gfxmode/gfxpayload commented out from grub.cfg, maybe that's the
> difference between your and mine setups.

Maybe, I'll test it later then. After all, I do have gfxmode and gxpayload used
in my grub.cfg.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #56 from Vladimir <bobahu4@gmail.com> ---
I have a panic back on reboot tho, same as in
https://bugs.freedesktop.org/attachment.cgi?id=77625

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #57 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #55)
> (In reply to comment #54)
> > Just tested with 6970, still fine, no AMD-Vi messages in dmesg.
> > 
> > I have gfxmode/gfxpayload commented out from grub.cfg, maybe that's the
> > difference between your and mine setups.
> 
> Maybe, I'll test it later then. After all, I do have gfxmode and gxpayload
> used in my grub.cfg.

Even with gfxpayload=text (which is working correctly without all the patches),
I still have the AMD-Vi IO PAGE FAULT messages.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #77808|0                           |1
        is obsolete|                            |

--- Comment #58 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 77999
  --> https://bugs.freedesktop.org/attachment.cgi?id=77999&action=edit
temporary workaround v2

Try this patch as a replacement for attachment 77808.  Do you still get the
iommu errors?

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #77999|0                           |1
        is obsolete|                            |

--- Comment #59 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 78000
  --> https://bugs.freedesktop.org/attachment.cgi?id=78000&action=edit
temporary workaround v3

argh.  typo in that one.  try this one as a replacement instead.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #60 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #59)
> Created attachment 78000 [details] [review]
> temporary workaround v3
> 
> argh.  typo in that one.  try this one as a replacement instead.

After fixing the patch (it was not applying correctly on the previous three
patches 77705, 77706 and 77743) and recompiling, it seems to fix the error.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #77706|0                           |1
        is obsolete|                            |

--- Comment #61 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 78081
  --> https://bugs.freedesktop.org/attachment.cgi?id=78081&action=edit
one more test

One more thing to try.  Can you try this patch on top of the previous patches
(attachment 77705, attachment 77743, attachment 78000).

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #62 from Alex Deucher <agd5f@yahoo.com> ---
Created attachment 78090
  --> https://bugs.freedesktop.org/attachment.cgi?id=78090&action=edit
another test

Please also try this patch on top of only attachment 77705.  No other patches.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #63 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
(In reply to comment #62)
> Created attachment 78090 [details] [review]
> another test
> 
> Please also try this patch on top of only attachment 77705 [details]
> [review].  No other patches.

Both patches don't fix anything over here. They do pretty much as if nothing
was applied.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #64 from Alexandre Demers <alexandre.f.demers@gmail.com> ---
Any of the patchs pushed in drm-next? I've been playing with drm-next since
yesterday and display is running fine when setting GRUB_GFXPAYLOAD_LINUX=keep
at GRUB's launch.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

--- Comment #65 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #64)
> Any of the patchs pushed in drm-next? I've been playing with drm-next since
> yesterday and display is running fine when setting
> GRUB_GFXPAYLOAD_LINUX=keep at GRUB's launch.

Yes.

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[Bug 57567] 3.7 radeonfb broken on efivga screens

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https://bugs.freedesktop.org/show_bug.cgi?id=57567

Martin Peres <martin.peres@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |MOVED

--- Comment #66 from Martin Peres <martin.peres@free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/314.

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