[Bug 34626] New: Mesa-Gallium with R600 - Framerate limited to 60 fps after suspend-cycle

[Bug 34626] New: Mesa-Gallium with R600 - Framerate limited to 60 fps after suspend-cycle

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=34626

           Summary: Mesa-Gallium with R600 - Framerate limited to 60 fps
                    after suspend-cycle
           Product: DRI
           Version: XOrg CVS
          Platform: Other
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: peterle@hottemptation.org


Hello,
I past I thought this is a bug of IOQuake3, but during switching between
Mesa-Classic and Mesa-Gallium I recognized, that the problem only exists with
Mesa-Gallium!

Reproduce:
1. $export vblank_mode=0 // switching of vsync
2. Launch an IOQuake3 based game (Quake3 Arena, OpenArena, World of Padman...)
3. check that VSYNC in IOQuake3 is also disabled!
4. Start a game and set "cg_drawpfs 1", know you should have at the top right
corner a display with your current framerate which is hopefully over 60 fps
5. switch to a tty during playing (should be no problem with
Kernel-Mode-Setting)
6. #pm-suspend (as root)
7. resume from suspend
8. switch back to X11/IOQuake3 -> framerate is limited to 60 fps

To fix this you have to relaunch IOQuake3 or simply type into quake-console
"vid_restart".
With Mesa-Classic and the R600-Driver this is not necessary, it displays always
the maximum possible framerate.

Maybe Gallium doesn't read or forget the environment-variable export_vblank
during resume from suspend?

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[Bug 34626] Mesa-Gallium with R600 - Framerate limited to 60 fps after suspend-cycle

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=34626

--- Comment #1 from peterle@hottemptation.org 2011-02-23 08:18:54 PST ---
Created an attachment (id=43710)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=43710)
output of dmesg

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[Bug 34626] Mesa-Gallium with R600 - Framerate limited to 60 fps after suspend-cycle

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=34626

--- Comment #2 from peterle@hottemptation.org 2011-02-23 08:19:28 PST ---
Created an attachment (id=43711)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=43711)
output of glxinfo

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[Bug 34626] Mesa-Gallium with R600 - Framerate limited to 60 fps after suspend-cycle

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=34626

--- Comment #3 from peterle@hottemptation.org 2011-02-23 08:19:56 PST ---
Created an attachment (id=43712)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=43712)
.config of kernel-2.6.38-rc6

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[Bug 34626] Mesa-Gallium with R600 - Framerate limited to 60 fps after suspend-cycle

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=34626

--- Comment #4 from peterle@hottemptation.org 2011-02-23 08:20:14 PST ---
Created an attachment (id=43713)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=43713)
output of lspci

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[Bug 34626] Mesa-Gallium with R600 - Framerate limited to 60 fps after suspend-cycle

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https://bugs.freedesktop.org/show_bug.cgi?id=34626

--- Comment #5 from peterle@hottemptation.org 2011-02-23 08:20:49 PST ---
Created an attachment (id=43714)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=43714)
output of complete package-list

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[Bug 34626] Mesa-Gallium with R600 - Framerate limited to 60 fps after suspend-cycle

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https://bugs.freedesktop.org/show_bug.cgi?id=34626

--- Comment #6 from peterle@hottemptation.org 2011-02-23 08:21:20 PST ---
Environment-Variables:

export R600_ENABLE_S3TC=1
export vblank_mode=0

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[Bug 34626] Mesa-Gallium with R600 - Framerate limited to 60 fps after suspend-cycle

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https://bugs.freedesktop.org/show_bug.cgi?id=34626

--- Comment #7 from Michel Dänzer <michel@daenzer.net> 2011-02-23 08:45:26 PST ---
(In reply to comment #7)
> 5. switch to a tty during playing (should be no problem with
> Kernel-Mode-Setting)
> 6. #pm-suspend (as root)
> 7. resume from suspend
> 8. switch back to X11/IOQuake3 -> framerate is limited to 60 fps

Does the problem also occur if you switch to console and back to X without a
suspend/resume cycle in between?


> Maybe Gallium doesn't read or forget the environment-variable export_vblank
> during resume from suspend?

No, the 3D driver is blissfully unaware of the suspend/resume cycle. The
problem is more likely in the X server/driver or kernel.

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[Bug 34626] Mesa-Gallium with R600 - Framerate limited to 60 fps after suspend-cycle

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=34626

--- Comment #8 from peterle@hottemptation.org 2011-02-23 09:08:40 PST ---
If I only switch between console and X everything keeps fine.

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[Bug 34626] Mesa-Gallium with R600 - Framerate limited to 60 fps after suspend-cycle

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https://bugs.freedesktop.org/show_bug.cgi?id=34626

peterle@hottemptation.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Platform|Other                       |x86-64 (AMD64)

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[Bug 34626] Mesa-Gallium with R600 - Framerate limited to 60 fps after suspend-cycle

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https://bugs.freedesktop.org/show_bug.cgi?id=34626

--- Comment #9 from Peter Weber <peter.weber@ttyhoney.com> 2011-11-19 09:40:14 PST ---
I've tested this in the meantime also with a Intel based grapcis solution
(Ironlake), it is not affected. But the Intel driver doesn't need the var
vblank_mode for switching vsync off (only SwapbuffersWait). Maybe the setting
of the var gets "lost" during suspend cycle?

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[Bug 34626] Mesa-Gallium with R600 - Framerate limited to 60 fps after suspend-cycle

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https://bugs.freedesktop.org/show_bug.cgi?id=34626

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

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

--- Comment #10 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/180.

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