[Bug 53111] vgaswitcheroo not working anymore

[Bug 53111] vgaswitcheroo not working anymore

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https://bugzilla.kernel.org/show_bug.cgi?id=53111


Rafael J. Wysocki <rjw@sisk.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Other                       |Video(DRI - non Intel)
         AssignedTo|rjw@sisk.pl                 |drivers_video-dri@kernel-bu
                   |                            |gs.osdl.org
            Product|Power Management            |Drivers




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[Bug 53111] vgaswitcheroo not working anymore

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https://bugzilla.kernel.org/show_bug.cgi?id=53111


Alex Deucher <alexdeucher@gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |alexdeucher@gmail.com




--- Comment #1 from Alex Deucher <alexdeucher@gmail.com>  2013-01-29 13:58:59 ---
Can you bisect?

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[Bug 53111] vgaswitcheroo not working anymore

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https://bugzilla.kernel.org/show_bug.cgi?id=53111





--- Comment #2 from cem.aydin@gmx.ch  2013-01-29 19:10:46 ---
Usually I use the current arch package. Looking at the Arch Rollback Machine
(http://arm.konnichi.com/search/index.php?a=64&q=^linux&core=1) shows that
there was made a jump from 3.6.11 to 3.7.3. I was a bit surprised before to get
3.7.4 all of a sudden... I just tried 3.7.3 and the problem appears there
already.

Doing a quick search I found this:
https://bugzilla.novell.com/show_bug.cgi?id=798254 indicating that it's already
broken on 3.7.1 (similar description, and _same_ lspci | grep VGA as mine:

[root@hplaptop cem]# lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Caicos
[Radeon HD 6400M/7400M Series]

The old Arch bug mentioned there was mine, but note that it is _not_ related to
this error cause in the meantime vgaswitcheroo was working.

Don't know if it's of interest but maybe see the link there:
http://www.phoronix.com/scan.php?page=news_item&px=MTE4MDM

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[Bug 53111] vgaswitcheroo not working anymore

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https://bugzilla.kernel.org/show_bug.cgi?id=53111


Alexander Mezin <mezin.alexander@gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |mezin.alexander@gmail.com




--- Comment #3 from Alexander Mezin <mezin.alexander@gmail.com>  2013-02-19 11:01:19 ---
I have the same problem with
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI
Whistler XT [AMD Radeon HD 6700M Series]

Seems that the bug is introduced in this commit:
http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=commit;h=492b49a2f21a7ce6cb0abce36017daa06036a626

Before it discrete card actually switches off.

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[Bug 53111] vgaswitcheroo not working anymore

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https://bugzilla.kernel.org/show_bug.cgi?id=53111





--- Comment #4 from Alex Deucher <alexdeucher@gmail.com>  2013-02-19 13:32:03 ---
Make sure your kernel has this patch:
http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=commitdiff;h=0b90365e7a32317b948583c4b5c2712d84610b08

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[Bug 53111] vgaswitcheroo not working anymore

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--- Comment #5 from Alexander Mezin <mezin.alexander@gmail.com>  2013-02-19 13:52:09 ---
Tested on vanilla 3.8. It has this patch.

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[Bug 53111] vgaswitcheroo not working anymore

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--- Comment #6 from Alexander Mezin <mezin.alexander@gmail.com>  2013-02-19 14:55:44 ---
Created an attachment (id=93541)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=93541)
Workaround

I found a workaround.

atpx->functions.power_cntl is 0 on my machine. Without this check switcheroo
works again.

lspci:
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09)
        Subsystem: Hewlett-Packard Company Device 3388
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI
Whistler XT [AMD Radeon HD 6700M Series] (rev ff)

It's muxless system.

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[Bug 53111] vgaswitcheroo not working anymore

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--- Comment #7 from Alex Deucher <alexdeucher@gmail.com>  2013-02-19 15:36:13 ---
Created an attachment (id=93591)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=93591)
Print atpx function mask

Can you attach the output of this patch?  I'd like to see the atpx function
mask on your system.

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[Bug 53111] vgaswitcheroo not working anymore

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--- Comment #8 from Alexander Mezin <mezin.alexander@gmail.com>  2013-02-19 15:55:26 ---
atpx function mask: 0x00000031

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[Bug 53111] vgaswitcheroo not working anymore

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--- Comment #9 from Alex Deucher <alexdeucher@gmail.com>  2013-02-19 18:02:54 ---
Created an attachment (id=93601)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=93601)
possible fix

Does the attached patch fix the issue for you?

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[Bug 53111] vgaswitcheroo not working anymore

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--- Comment #10 from Alexander Mezin <mezin.alexander@gmail.com>  2013-02-19 19:55:55 ---
yes, it fixes the issue

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[Bug 53111] vgaswitcheroo not working anymore

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https://bugzilla.kernel.org/show_bug.cgi?id=53111


Florian Mickler <florian@mickler.org> changed:

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




--- Comment #11 from Florian Mickler <florian@mickler.org>  2013-03-04 21:28:06 ---
A patch referencing this bug report has been merged in Linux v3.9-rc1:

commit 43a23aa450cc19fe8996caf09e7e21ae5f6e56e8
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Tue Feb 19 12:55:52 2013 -0500

    drm/radeon: properly validate the atpx interface

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[Bug 53111] vgaswitcheroo not working anymore

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https://bugzilla.kernel.org/show_bug.cgi?id=53111


Daniel Vetter <daniel@ffwll.ch> changed:

           What    |Removed                     |Added
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                 CC|                            |fedevx@yahoo.com




--- Comment #12 from Daniel Vetter <daniel@ffwll.ch>  2013-04-20 18:21:28 ---
*** Bug 55311 has been marked as a duplicate of this bug. ***

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[Bug 53111] vgaswitcheroo not working anymore

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Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |alan@lxorguk.ukuu.org.uk
         Resolution|---                         |CODE_FIX

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[Bug 53111] vgaswitcheroo not working anymore

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Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
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             Status|RESOLVED                    |CLOSED

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