* [Bug 27314] output not working on dell m6500
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--- Comment #1 from Travis Glenn Hansen <travisghansen@yahoo.com> 2010-03-25 10:38:58 PST ---
Created an attachment (id=34442)
--> (http://bugs.freedesktop.org/attachment.cgi?id=34442)
Xorg.0.log
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--- Comment #2 from Travis Glenn Hansen <travisghansen@yahoo.com> 2010-03-28 20:03:21 PST ---
After booting with vga connected it now works. DP will not work for me
however.
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--- Comment #3 from Travis Glenn Hansen <travisghansen@yahoo.com> 2010-03-28 20:25:02 PST ---
Created an attachment (id=34525)
--> (http://bugs.freedesktop.org/attachment.cgi?id=34525)
drm.debug=15
just booting with no X startup
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--- Comment #4 from Travis Glenn Hansen <travisghansen@yahoo.com> 2010-03-28 20:51:22 PST ---
Created an attachment (id=34526)
--> (http://bugs.freedesktop.org/attachment.cgi?id=34526)
Xorg.0.log with nomodeset
no kms, just ums
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--- Comment #5 from Travis Glenn Hansen <travisghansen@yahoo.com> 2010-03-28 20:59:49 PST ---
Created an attachment (id=34527)
--> (http://bugs.freedesktop.org/attachment.cgi?id=34527)
bios
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--- Comment #6 from Travis Glenn Hansen <travisghansen@yahoo.com> 2010-03-28 21:42:16 PST ---
Created an attachment (id=34528)
--> (http://bugs.freedesktop.org/attachment.cgi?id=34528)
Xorg.0.log
nomodeset
git
patch applied from http://fpaste.org/WgQj/raw/
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Alex Deucher <agd5f@yahoo.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #34528|text/x-log |text/plain
mime type| |
Attachment #34528|0 |1
is patch| |
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Alex Deucher <agd5f@yahoo.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #34526|text/x-log |text/plain
mime type| |
Attachment #34526|0 |1
is patch| |
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--- Comment #7 from Alex Deucher <agd5f@yahoo.com> 2010-03-29 11:19:53 PST ---
Created an attachment (id=34531)
--> (http://bugs.freedesktop.org/attachment.cgi?id=34531)
possible link training fix
Does this kms patch help? Try applying this other patch as well:
http://marc.info/?l=dri-devel&m=126988624220184&w=2
although it shouldn't be necessary.
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--- Comment #8 from Travis Glenn Hansen <travisghansen@yahoo.com> 2010-03-29 14:25:43 PST ---
Created an attachment (id=34535)
--> (http://bugs.freedesktop.org/attachment.cgi?id=34535)
dmesg
dmesg with attachment 34531 applied.
With the patch applied the monitor no longer goes into 'power save' mode and
appears to think something is being sent to it. However I still get no
picture.
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--- Comment #9 from Alex Deucher <agd5f@yahoo.com> 2010-03-31 11:49:38 PST ---
Created an attachment (id=34585)
--> (http://bugs.freedesktop.org/attachment.cgi?id=34585)
possible fix
Does this drm patch help? We should be turning the DP vid stream on after we
do link training.
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--- Comment #10 from Travis Glenn Hansen <travisghansen@yahoo.com> 2010-03-31 12:46:44 PST ---
Created an attachment (id=34587)
--> (http://bugs.freedesktop.org/attachment.cgi?id=34587)
dmesg
dmesg after attachment 34585 applied. Still no output.
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--- Comment #11 from Travis Glenn Hansen <travisghansen@yahoo.com> 2010-03-31 12:47:35 PST ---
No go. Thanks so much for the continued help!
(In reply to comment #9)
> Created an attachment (id=34585)
--> (http://bugs.freedesktop.org/attachment.cgi?id=34585) [details]
> possible fix
>
> Does this drm patch help? We should be turning the DP vid stream on after we
> do link training.
>
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Alex Deucher <agd5f@yahoo.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #34442|text/x-log |text/plain
mime type| |
Attachment #34442|0 |1
is patch| |
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Alex Deucher <agd5f@yahoo.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |seblu@seblu.net
--- Comment #12 from Alex Deucher <agd5f@yahoo.com> 2010-06-17 09:02:54 PDT ---
*** Bug 28554 has been marked as a duplicate of this bug. ***
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From: bugzilla-daemon @ 2010-06-17 16:23 UTC (permalink / raw)
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--- Comment #13 from Alex Deucher <agd5f@yahoo.com> 2010-06-17 09:23:53 PDT ---
boot up to a vga console (don't load the radeon drm or X) so that the DP
monitor is still enabled. Then dump the reg state to a file and attach that
dump. You can get avivotool here:
http://cgit.freedesktop.org/~airlied/radeontool/
and then apply this patch:
https://bugs.freedesktop.org/attachment.cgi?id=34810
then dump the regs (as root):
avivotool regs all > dp_bios.dump
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--- Comment #14 from Alex Deucher <agd5f@yahoo.com> 2010-06-17 09:31:30 PDT ---
You can also dump the regs as described in the previous comment using fglrx if
that's easier. I just need a dump from a working state.
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From: bugzilla-daemon @ 2010-07-19 15:33 UTC (permalink / raw)
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Alex Deucher <agd5f@yahoo.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rafael.espindola@gmail.com
--- Comment #15 from Alex Deucher <agd5f@yahoo.com> 2010-07-19 08:33:37 PDT ---
*** Bug 28267 has been marked as a duplicate of this bug. ***
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Alex Deucher <agd5f@yahoo.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|output not working on dell |DP link training fails on
|m6500 |2560x1440 panels
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--- Comment #16 from Alex Deucher <agd5f@yahoo.com> 2010-08-05 17:55:57 PDT ---
This is a problem in the link training algo. The timing and ordering may need
to be tweaked to make some monitors happy.
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From: bugzilla-daemon @ 2010-08-06 1:10 UTC (permalink / raw)
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--- Comment #17 from Travis Glenn Hansen <travisghansen@yahoo.com> 2010-08-05 18:10:05 PDT ---
Created an attachment (id=37606)
--> (https://bugs.freedesktop.org/attachment.cgi?id=37606)
avivotool regs all (vanilla radeontool package)
This is the output of my machine while running fglrx.
attachment 34810 *not* applied. will upload output with that patch
momentarily.
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To: dri-devel
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--- Comment #18 from Travis Glenn Hansen <travisghansen@yahoo.com> 2010-08-05 18:12:10 PDT ---
Created an attachment (id=37607)
--> (https://bugs.freedesktop.org/attachment.cgi?id=37607)
avivotool regs all (patched radeontool package)
>From my properly running machine with fglrx.
radeontool patched with attachement 34810
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--- Comment #19 from Rafael Ávila de Espíndola <rafael.espindola@gmail.com> 2010-11-09 18:58:37 PST ---
Building the current X driver on a Fedora 14 system still has this bug.
The hack of reverting c7eeda8c3f3514ba95ebf2893fbe124bf526b3df works on the
imac27.
Anything I could do to help with this bug?
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--- Comment #20 from Travis Glenn Hansen <travisghansen@yahoo.com> 2011-01-05 13:59:50 PST ---
Is there any hack I can do to get this working? I'd like to be using the
open-source drivers (9 months has been more than enough for me)...
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--- Comment #21 from Alex Deucher <agd5f@yahoo.com> 2011-01-05 14:59:46 PST ---
You'll have to tweak the link training algo (dp_link_train() in atombios_dp.c)
until the monitor accepts the link. Unfortunately, there's not a lot I can do
without access to the problematic monitor.
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--- Comment #22 from Alex Deucher <agd5f@yahoo.com> 2011-01-05 18:36:37 PST ---
Created an attachment (id=41696)
View: https://bugs.freedesktop.org/attachment.cgi?id=41696
Review: https://bugs.freedesktop.org/review?bug=27314&attachment=41696
enable downspread if the sink supports it
First see if this patch helps, if not, try the second patch both with and
without this one.
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--- Comment #23 from Alex Deucher <agd5f@yahoo.com> 2011-01-05 18:37:26 PST ---
Created an attachment (id=41697)
View: https://bugs.freedesktop.org/attachment.cgi?id=41697
Review: https://bugs.freedesktop.org/review?bug=27314&attachment=41697
retry the training with a higher voltage
Try this patch both with and without the previous downspread patch.
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--- Comment #24 from Travis Glenn Hansen <travisghansen@yahoo.com> 2011-01-06 21:45:30 PST ---
I've tried the attached patches and no go. I started digging through code and
even read part of the dp spec but didn't get very far :( I'll allow ssh access
to the machine or possibly figure out a way to get one of these monitors into a
dev's hands if that's what it takes...
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--- Comment #25 from Ortwin Glück <odi@odi.ch> 2011-01-07 08:28:47 PST ---
The patches don't help the iMac11,2 (21.5" version) either. Still no picture.
http://www.odi.ch/prog/imac/index.php
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--- Comment #26 from Alex Deucher <agd5f@yahoo.com> 2011-01-12 17:10:50 PST ---
Created an attachment (id=41944)
View: https://bugs.freedesktop.org/attachment.cgi?id=41944
Review: https://bugs.freedesktop.org/review?bug=27314&attachment=41944
possible fix
Maybe the monitor doesn't like the clock... Does this patch help?
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--- Comment #27 from Ortwin Glück <odi@odi.ch> 2011-01-13 11:19:41 PST ---
Tried on the iMac11,2 and seeing no difference. Find the dmesg debug output
(with that patch) and a lot more info on the site mentioned in comment 25. I am
not even sure if the drivers configures the right pll/encoder/transmitter etc.
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--- Comment #28 from Travis Glenn Hansen <travisghansen@yahoo.com> 2011-01-19 11:24:20 PST ---
Been out on vacation. Is it still necessary to test the latest patch?
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--- Comment #29 from Alex Deucher <agd5f@yahoo.com> 2011-01-19 12:07:25 PST ---
(In reply to comment #28)
> Been out on vacation. Is it still necessary to test the latest patch?
Worth a shot.
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--- Comment #30 from Alex Deucher <agd5f@yahoo.com> 2011-01-25 17:14:01 PST ---
Can you try the patches available here:
http://people.freedesktop.org/~agd5f/dp_fixes/
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From: bugzilla-daemon @ 2011-01-26 16:35 UTC (permalink / raw)
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--- Comment #31 from Travis Glenn Hansen <travisghansen@yahoo.com> 2011-01-26 08:35:56 PST ---
Created an attachment (id=42529)
--> (https://bugs.freedesktop.org/attachment.cgi?id=42529)
dmesg output with 2011-01-25 patches
Thanks for continuing to look at this! Still no go with those patches for me.
See attached dmesg.
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From: bugzilla-daemon @ 2011-01-29 14:38 UTC (permalink / raw)
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--- Comment #32 from Ortwin Glück <odi@odi.ch> 2011-01-29 06:38:39 PST ---
Tried patches from comment 30 on the iMac11,2 and still seeing no difference.
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From: bugzilla-daemon @ 2011-03-15 7:11 UTC (permalink / raw)
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Alex Deucher <agd5f@yahoo.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|DP link training fails on |displayport link training
|2560x1440 panels |fails on certain panels
| |(channel equalization
| |fails)
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Alex Deucher <agd5f@yahoo.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |merlijn@wajer.org
--- Comment #33 from Alex Deucher <agd5f@yahoo.com> 2011-03-15 00:11:48 PDT ---
*** Bug 35179 has been marked as a duplicate of this bug. ***
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Alex Deucher <agd5f@yahoo.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ihatewindowsxp@gmail.com
--- Comment #34 from Alex Deucher <agd5f@yahoo.com> 2011-03-20 22:17:23 PDT ---
*** Bug 35479 has been marked as a duplicate of this bug. ***
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From: bugzilla-daemon @ 2011-03-23 13:34 UTC (permalink / raw)
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--- Comment #35 from Ortwin Glück <odi@odi.ch> 2011-03-23 06:34:13 PDT ---
Just out of curiosity, why is link training implemented on driver level and not
on drm level? I see that nouvau and radeon each have their own implementation.
The algorithm does not depend on the card, right? Only the way voltage,
patterns etc are set does. Maybe by merging them the problem can be found.
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--- Comment #36 from Alex Deucher <agd5f@yahoo.com> 2011-03-23 09:46:22 PDT ---
(In reply to comment #35)
> Just out of curiosity, why is link training implemented on driver level and not
> on drm level? I see that nouvau and radeon each have their own implementation.
> The algorithm does not depend on the card, right? Only the way voltage,
> patterns etc are set does. Maybe by merging them the problem can be found.
The link training algo is the same across all chips in theory (it's defined in
a VESA spec). However, there are often a lot of asic specific things that need
to be handled. It would probably be doable if you could figure out the right
set of callbacks and driver adjustable fields to make all the drivers happy.
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From: bugzilla-daemon @ 2011-04-25 18:20 UTC (permalink / raw)
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--- Comment #37 from Alex Deucher <agd5f@yahoo.com> 2011-04-25 11:20:35 PDT ---
Does the following patch set (against 2.6.39) help?
http://people.freedesktop.org/~agd5f/dp_rewrite/
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From: bugzilla-daemon @ 2011-04-30 9:55 UTC (permalink / raw)
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--- Comment #38 from Ortwin Glück <odi@odi.ch> 2011-04-30 02:55:06 PDT ---
Created an attachment (id=46185)
--> (https://bugs.freedesktop.org/attachment.cgi?id=46185)
dmesg with DP rewrite patches
Still doesn't work unfortunately. dmesg attached.
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From: bugzilla-daemon @ 2011-05-08 22:39 UTC (permalink / raw)
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--- Comment #39 from Jérémy Lal <kapouer@melix.org> 2011-05-08 15:39:33 PDT ---
Created an attachment (id=46455)
--> (https://bugs.freedesktop.org/attachment.cgi?id=46455)
efi iMac12,2 dmesg
Same problem with latest iMac12,2 (27") when booting with efi.
(I had to patch kernel 2.6.38 because of
https://bugzilla.kernel.org/show_bug.cgi?id=23202)
The first attachment is booting with efi, the second booting with bios.
I removed the timestamps from mesg to ease the diff.
EFI : black screen when drm is activated (not before)
BIOS : drm and Xorg work, DRI2 activated.
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To: dri-devel
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--- Comment #40 from Jérémy Lal <kapouer@melix.org> 2011-05-08 15:40:51 PDT ---
Created an attachment (id=46456)
--> (https://bugs.freedesktop.org/attachment.cgi?id=46456)
bios iMac12,2 dmesg
and the one booting with bios.
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--- Comment #41 from Jérémy Lal <kapouer@melix.org> 2011-05-08 15:58:38 PDT ---
and i forgot to mention my current kernel is 2.6.38 with all ~agd5f/dp_rewrite/
patches applied. Results are much the same with and without those.
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--- Comment #42 from Jérémy Lal <kapouer@melix.org> 2011-05-10 18:28:22 PDT ---
I think the problem comes from the difference between BIOS run (working):
drm:radeon_dp_get_link_status], link status 11 11 80 00 00 00
[drm:radeon_dp_link_train], clock recovery at voltage 0 pre-emphasis 0
[drm:radeon_dp_get_link_status], link status 77 77 81 00 00 00
[drm:radeon_dp_link_train], channel eq at voltage 0 pre-emphasis 0
and EFI run (black screen):
[drm:radeon_dp_get_link_status], link status 00 00 00 00 11 11
[drm:dp_get_adjust_train], requested signal parameters: lane 0 voltage 0.6V
pre_emph 0dB
[drm:dp_get_adjust_train], requested signal parameters: lane 1 voltage 0.6V
pre_emph 0dB
[drm:dp_get_adjust_train], requested signal parameters: lane 2 voltage 0.6V
pre_emph 0dB
[drm:dp_get_adjust_train], requested signal parameters: lane 3 voltage 0.6V
pre_emph 0dB
[drm:dp_get_adjust_train], using signal parameters: voltage 0.6V pre_emph 0dB
[drm:radeon_dp_get_link_status], link status 00 00 00 00 22 22
Though I'm a bit weak on atombios_dp.c, i'm ready to promptly test any patch.
Last test was with kernel 2.6.39-rc6.
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--- Comment #43 from Jérémy Lal <kapouer@melix.org> 2011-05-16 13:47:02 PDT ---
It seems the bios that's found when booting in UEFI mode is wrong.
Following that patch and procedure :
https://bugs.freedesktop.org/show_bug.cgi?id=26891
solves the issue.
When the mode is set, the screen displays weird stuff for a moment.
I'll investigate drm messages to see what happens.
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--- Comment #44 from Ortwin Glück <odi@odi.ch> 2011-05-17 02:45:27 PDT ---
But I also noticed the line "radeon 0000:01:00.0: Invalid ROM contents" in my
dmesg. Although I am not using EFI boot (plain old grub without EFI support),
this indicates that the kernel doesn't see a valid video BIOS, right?
So I doubt this bug as anything to do with DP link training actually, and bug
26891 is really the cause.
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--- Comment #45 from Travis Glenn Hansen <travisghansen@yahoo.com> 2011-05-17 08:11:35 PDT ---
I just wanted to note that EFI is out of the picture in my setup. Both laptop
and monitor in my case are Dell.
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--- Comment #46 from Alex Deucher <agd5f@yahoo.com> 2011-05-20 09:47:58 PDT ---
Please try the new patches I sent out last night. you can find them here:
http://people.freedesktop.org/~agd5f/dp_rewrite/
You may have to apply Jesse's bpc patches first (in the bpc firectory)
depending on what kernel you are using.
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From: bugzilla-daemon @ 2011-05-20 16:49 UTC (permalink / raw)
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--- Comment #47 from Alex Deucher <agd5f@yahoo.com> 2011-05-20 09:49:43 PDT ---
Please don't drag in Mac EFI issues, this bug is about DP link training
problems. For Mac's stick to the legacy bios rather than trying to run in EFI
mode.
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--- Comment #48 from Alex Deucher <agd5f@yahoo.com> 2011-05-20 09:55:24 PDT ---
Travis, please try this latest patch set. I was finally able to reproduce a
problem similar to yours on a new board I got. The problem was actually with
the way the spread spectrum interaction with the PPLL was set up. That should
be fixed in this patch set.
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--- Comment #49 from Travis Glenn Hansen <travisghansen@yahoo.com> 2011-05-20 10:07:39 PDT ---
Alex I will try as soon as I get back to the office (early next week). What
version should these be applied against or do you have a git repo I should use?
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From: bugzilla-daemon @ 2011-05-20 17:20 UTC (permalink / raw)
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--- Comment #50 from Alex Deucher <agd5f@yahoo.com> 2011-05-20 10:20:03 PDT ---
Dave's drm-next or drm-fixes trees should work:
http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=summary
if you use drm-fixes, you'll need to apply Jesse's bpc patches (in the bpc
directly in by server) first.
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From: bugzilla-daemon @ 2011-05-20 17:34 UTC (permalink / raw)
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--- Comment #51 from Travis Glenn Hansen <travisghansen@yahoo.com> 2011-05-20 10:34:10 PDT ---
I'll just simply use drm-next then when I test.
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From: bugzilla-daemon @ 2011-05-20 17:44 UTC (permalink / raw)
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--- Comment #52 from Alex Deucher <agd5f@yahoo.com> 2011-05-20 10:44:25 PDT ---
Looks like Dave pushed a new drm-radeon-testing, so you can use that and then
you'll only need to apply patches 0019 and 0020.
http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=shortlog;h=refs/heads/drm-radeon-testing
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From: bugzilla-daemon @ 2011-08-06 8:29 UTC (permalink / raw)
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--- Comment #53 from Ortwin Glück <odi@odi.ch> 2011-08-06 01:29:30 PDT ---
I am happy to report that with kernel 3.0.1 all works well on the iMac 27".
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--- Comment #54 from Merlijn Wajer <merlijn@wajer.org> 2011-08-27 06:10:09 PDT ---
I can confirm DisplayPort seems to work for me as well now with Linux 3.1-rc3.
It didn't work on previous kernels (I'm not sure if I tested 3.0, but certainly
not before 3.0) when using my Dell U2133H monitor.
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From: bugzilla-daemon @ 2011-10-05 13:16 UTC (permalink / raw)
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--- Comment #55 from Alex Deucher <agd5f@yahoo.com> 2011-10-05 06:16:30 PDT ---
Does kernel 3.1 help? Also, please try this patch:
http://lists.freedesktop.org/archives/dri-devel/2011-October/014993.html
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From: bugzilla-daemon @ 2011-11-01 2:59 UTC (permalink / raw)
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--- Comment #56 from Travis Glenn Hansen <travisghansen@yahoo.com> 2011-10-31 19:59:41 PDT ---
Alex
Thanks for continuing to look at this :) I have converted my amd machine to a
server so I'm not using it (or rebooting it for that matter) with an external
monitor. However I ran through some updates today and decided to hook it up to
provide feedback. I updated to 3.1.0 (gentoo variant) and it continues to fail
for me :( After looking at the patch it appears to either be in vanilla 3.1.0
or already included in the gentoo patchset. To summarize, I've tried 3.1.0
with the patch from the link and it doesn't work with my setup.
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--- Comment #58 from Rafael Ávila de Espíndola <rafael.espindola@gmail.com> 2011-11-08 18:10:31 UTC ---
I also decided to try reverting c7eeda8c3f3514ba95ebf2893fbe124bf526b3df and it
works.
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From: bugzilla-daemon @ 2011-11-09 1:43 UTC (permalink / raw)
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--- Comment #57 from Rafael Ávila de Espíndola <rafael.espindola@gmail.com> 2011-11-08 17:43:24 PST ---
Created attachment 53309
--> https://bugs.freedesktop.org/attachment.cgi?id=53309
xorg log with the ati driver in fedora16
I have just installed fedora 16 on an "imac11,1", and I still have the same
problem. I have attached the xorg log, let me know if there is anything else I
could do to help.
I checked that the patch pointed by Comment 55 is include in the linux 3.1
shipping with fedora.
I am going to try the current linus tree and let you know if that helps.
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From: bugzilla-daemon @ 2011-11-09 14:44 UTC (permalink / raw)
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--- Comment #59 from Alex Deucher <agd5f@yahoo.com> 2011-11-09 06:44:37 PST ---
(In reply to comment #57)
> Created attachment 53309 [details]
> xorg log with the ati driver in fedora16
>
> I have just installed fedora 16 on an "imac11,1", and I still have the same
> problem. I have attached the xorg log, let me know if there is anything else I
> could do to help.
>
> I checked that the patch pointed by Comment 55 is include in the linux 3.1
> shipping with fedora.
>
> I am going to try the current linus tree and let you know if that helps.
Why are you using UMS? All of the relevant fixes have been in KMS.
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From: bugzilla-daemon @ 2011-11-13 19:26 UTC (permalink / raw)
To: dri-devel
https://bugs.freedesktop.org/show_bug.cgi?id=27314
--- Comment #60 from Rafael Ávila de Espíndola <rafael.espindola@gmail.com> 2011-11-13 11:26:58 PST ---
> Why are you using UMS? All of the relevant fixes have been in KMS.
KMS also failed with the fedora kernel. I will upload the dmesg in a sec.
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--- Comment #61 from Rafael Ávila de Espíndola <rafael.espindola@gmail.com> 2011-11-13 11:29:13 PST ---
Created attachment 53481
--> https://bugs.freedesktop.org/attachment.cgi?id=53481
dmesg from kernel-3.1.0-7.fc16
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--- Comment #62 from Rafael Ávila de Espíndola <rafael.espindola@gmail.com> 2011-11-14 19:54:15 PST ---
Created attachment 53564
--> https://bugs.freedesktop.org/attachment.cgi?id=53564
dmesg with linus tree (7f80850d3f9fd8fda23a317044aef3a6bafab06b)
Got the same problem with linus tree and KMS. dmesg attached, let me know if
there is anything I should try.
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From: bugzilla-daemon @ 2012-01-10 1:11 UTC (permalink / raw)
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https://bugs.freedesktop.org/show_bug.cgi?id=27314
--- Comment #63 from Rafael Ávila de Espíndola <rafael.espindola@gmail.com> 2012-01-09 17:11:34 PST ---
Created attachment 55359
--> https://bugs.freedesktop.org/attachment.cgi?id=55359
dmesg from kernel 3.2
I just tried KMS with kernel 3.2 and I still get a black screen :-(
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From: bugzilla-daemon @ 2012-01-15 12:16 UTC (permalink / raw)
To: dri-devel
https://bugs.freedesktop.org/show_bug.cgi?id=27314
--- Comment #64 from Jérémy Lal <kapouer@melix.org> 2012-01-15 04:16:02 PST ---
FYI, linux 3.2-rc7 on iMac12,2 (27" 2011 model) has radeon kms running without
any glitch, and even with pretty good performance ! I'm EFI-booting with
default debian/experimental kernel, so it's not customized nor patched.
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From: bugzilla-daemon @ 2012-01-19 5:27 UTC (permalink / raw)
To: dri-devel
https://bugs.freedesktop.org/show_bug.cgi?id=27314
--- Comment #65 from Rafael Ávila de Espíndola <rafael.espindola@gmail.com> 2012-01-18 21:27:43 PST ---
(In reply to comment #64)
> FYI, linux 3.2-rc7 on iMac12,2 (27" 2011 model) has radeon kms running without
> any glitch, and even with pretty good performance ! I'm EFI-booting with
> default debian/experimental kernel, so it's not customized nor patched.
Interesting. I have a iMac11,1. I will try EFI booting it.
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From: bugzilla-daemon @ 2012-01-19 20:53 UTC (permalink / raw)
To: dri-devel
https://bugs.freedesktop.org/show_bug.cgi?id=27314
Rafael Ávila de Espíndola <rafael.espindola@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #55359|0 |1
is obsolete| |
--- Comment #66 from Rafael Ávila de Espíndola <rafael.espindola@gmail.com> 2012-01-19 20:53:01 UTC ---
Created attachment 55818
--> https://bugs.freedesktop.org/attachment.cgi?id=55818
dmesg trying kms after efi booting
EFI booting doesn't look very different from a bios boot.
There is initially a fb thanks to efifb, but the screen goes black just after
[ 4.071160] fb: conflicting fb hw usage radeondrmfb vs EFI VGA - removing
generic driver
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From: bugzilla-daemon @ 2012-01-20 13:37 UTC (permalink / raw)
To: dri-devel
https://bugs.freedesktop.org/show_bug.cgi?id=27314
Alex Deucher <agd5f@yahoo.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #55818|application/octet-stream |text/plain
mime type| |
Attachment #55818|0 |1
is patch| |
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From: bugzilla-daemon @ 2012-04-07 0:22 UTC (permalink / raw)
To: dri-devel
https://bugs.freedesktop.org/show_bug.cgi?id=27314
--- Comment #67 from Rafael Ávila de Espíndola <rafael.espindola@gmail.com> 2012-04-06 17:22:46 PDT ---
Created attachment 59612
--> https://bugs.freedesktop.org/attachment.cgi?id=59612
dmesg with bios booting and kernel 3.3.0
Results are similar to 3.2 :-(
This is an imac 11,1. Let me know if there any additional debugging I could do.
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From: bugzilla-daemon @ 2012-06-05 4:05 UTC (permalink / raw)
To: dri-devel
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--- Comment #68 from Rafael Ávila de Espíndola <rafael.espindola@gmail.com> 2012-06-04 21:05:29 PDT ---
I don't know exactly what changed, but I just installed fedora 17 and after
updating the kernel kms is working! :-)
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From: bugzilla-daemon @ 2013-08-19 18:25 UTC (permalink / raw)
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[-- Attachment #1.1: Type: text/plain, Size: 876 bytes --]
https://bugs.freedesktop.org/show_bug.cgi?id=27314
--- Comment #69 from Guilherme Amadio <guilherme.amadio@gmail.com> ---
Hi,
Has anyone been able to get KMS working on a 27" iMac?
I have an iMac 11,1 and I cannot get X to work. Documentation
is scarce, so I don't know how to discover what is the problem.
When I start X, it doesn't show any errors, but I get a blank
screen. Same for when I insert the radeon module with kms on.
I suspect that the EDID is not being handled correctly. Does
any of you know how I can create an external EDID for a 2560x1440
monitor? My video card is an ATI Radeon HD 4850, by the way.
I'd appreciate any help. I'm using linux 3.10, and can post dmesg,
Xorg.0.log, etc. I'd also happily live with a non kms setup, but
recent X seems to require kms...
Thank you,
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https://bugs.freedesktop.org/show_bug.cgi?id=27314
--- Comment #70 from Alex Deucher <agd5f@yahoo.com> ---
(In reply to comment #69)
> I have an iMac 11,1 and I cannot get X to work. Documentation
> is scarce, so I don't know how to discover what is the problem.
> When I start X, it doesn't show any errors, but I get a blank
> screen. Same for when I insert the radeon module with kms on.
> I suspect that the EDID is not being handled correctly. Does
> any of you know how I can create an external EDID for a 2560x1440
> monitor? My video card is an ATI Radeon HD 4850, by the way.
If xrandr --verbose shows the appropriate modes for your display, there is no
problem with the EDID. You might try a 3.11 kernel.
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To: dri-devel
[-- Attachment #1.1: Type: text/plain, Size: 1081 bytes --]
https://bugs.freedesktop.org/show_bug.cgi?id=27314
--- Comment #71 from Rafael Ávila de Espíndola <rafael.espindola@gmail.com> ---
(In reply to comment #69)
> Hi,
>
> Has anyone been able to get KMS working on a 27" iMac?
>
> I have an iMac 11,1 and I cannot get X to work. Documentation
> is scarce, so I don't know how to discover what is the problem.
> When I start X, it doesn't show any errors, but I get a blank
> screen. Same for when I insert the radeon module with kms on.
> I suspect that the EDID is not being handled correctly. Does
> any of you know how I can create an external EDID for a 2560x1440
> monitor? My video card is an ATI Radeon HD 4850, by the way.
>
> I'd appreciate any help. I'm using linux 3.10, and can post dmesg,
> Xorg.0.log, etc. I'd also happily live with a non kms setup, but
> recent X seems to require kms...
>
> Thank you,
I works for me on the same hardware if I bios boot it. With an EFI boot I get a
black screen like yours.
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To: dri-devel
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https://bugs.freedesktop.org/show_bug.cgi?id=27314
Benjamin Bellec <b.bellec@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |b.bellec@gmail.com
--- Comment #72 from Benjamin Bellec <b.bellec@gmail.com> ---
I bought a new screen and it looks like I have the same issue.
Hardware is:
GPU: Radeon HD5850 (1GB)
Screen: Dell U2414H
Connection: DisplayPort (GPU) / MiniDisplayPort (Screen)
Software is:
Fedora 23 (64-bit)
Kernel 4.2.8
At Fedora loading my screens got no more signal and enter in sleep mode. If I
unplug and replug the DisplayPort cable the screen connection is recovered.
The log shows these 2 messages:
[drm:radeon_dp_link_train [radeon]] *ERROR* channel eq failed: 5 tries
[drm:radeon_dp_link_train [radeon]] *ERROR* channel eq failed
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--- Comment #73 from nickles1995@gmail.com ---
I believe I have this issue. The screen turns off after grub.
Hardware:
27 inch imac, late 2009
radeon hd 4850
core i7
I'm trying to put the latest fedora 23 on it. I'm not overwhelmingly sure about
the details beyond that. I'm relatively new to linux, so if anyone wants me to
try anything it would take a bit of hand holding.
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Martin Peres <martin.peres@free.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |MOVED
Status|NEW |RESOLVED
--- Comment #74 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
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You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/111.
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