[Bug 29098] New: xf86-video-ati with KMS flickering on OpenGL applications and video playback

[Bug 29098] New: xf86-video-ati with KMS flickering on OpenGL applications and video playback

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29098

           Summary: xf86-video-ati with KMS flickering on OpenGL
                    applications and video playback
           Product: DRI
           Version: XOrg CVS
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: ssteinberg@gmail.com


git xf86-video-ati, Mesa and libdrm. Xorg server 1.8.1.902. Kenerl 2.6.35 with
KMS enabled and Radeon-ucode formware.

glxinfo reports:
name of display: :0.0
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
    GLX_ARB_multisample, GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, 
    GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_copy_sub_buffer, 
    GLX_OML_swap_method, GLX_SGI_make_current_read, GLX_SGI_swap_control, 
    GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, 
    GLX_SGIX_visual_select_group, GLX_INTEL_swap_event
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
client glx extensions:
    GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context, 
    GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_allocate_memory, 
    GLX_MESA_copy_sub_buffer, GLX_MESA_swap_control, 
    GLX_MESA_swap_frame_usage, GLX_OML_swap_method, GLX_OML_sync_control, 
    GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync, 
    GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, 
    GLX_SGIX_visual_select_group, GLX_EXT_texture_from_pixmap, 
    GLX_INTEL_swap_event
GLX version: 1.4
GLX extensions:
    GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context, 
    GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_copy_sub_buffer, 
    GLX_MESA_swap_control, GLX_MESA_swap_frame_usage, GLX_OML_swap_method, 
    GLX_OML_sync_control, GLX_SGI_make_current_read, GLX_SGI_swap_control, 
    GLX_SGI_video_sync, GLX_SGIS_multisample, GLX_SGIX_fbconfig, 
    GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, 
    GLX_EXT_texture_from_pixmap, GLX_INTEL_swap_event
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: Mesa DRI R600 (RV670 9505) 20090101  TCL DRI2
OpenGL version string: 2.0 Mesa 7.9-devel
OpenGL shading language version string: 1.10
....

OpenGL applications (for example etracer) run at 60fps (vsync limit) however
there is heavy flickering, or just artefacts on 2D blended elements. Menus for
example are only partially visible. Text during game flickers, etc.. Compiz is
worse. And even glxgears causes mild flickering.
Booting with nomodeset fixs this issue, however performance is very low. ~20
fps on etracer.
I tried stable releases of libdrm, Mesa and xf86-video-ati. No difference.

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[Bug 29098] xf86-video-ati with KMS flickering on OpenGL applications and video playback

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29098

--- Comment #1 from Shlomi Steinberg <ssteinberg@gmail.com> 2010-07-16 02:51:20 PDT ---
Created an attachment (id=37117)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37117)
xorg.conf

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[Bug 29098] xf86-video-ati with KMS flickering on OpenGL applications and video playback

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29098

--- Comment #2 from Shlomi Steinberg <ssteinberg@gmail.com> 2010-07-16 02:52:04 PDT ---
Created an attachment (id=37118)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37118)
2.6.35-r5 config

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[Bug 29098] xf86-video-ati with KMS flickering on OpenGL applications and video playback

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29098

--- Comment #3 from Andy Furniss <lists@andyfurniss.entadsl.com> 2010-07-16 05:56:23 PDT ---
(In reply to comment #0)

> OpenGL applications (for example etracer) run at 60fps (vsync limit) however
> there is heavy flickering, or just artefacts on 2D blended elements. Menus for
> example are only partially visible. Text during game flickers, etc.. Compiz is
> worse. And even glxgears causes mild flickering.

Looks like a dup of https://bugs.freedesktop.org/show_bug.cgi?id=28341

If you agree you could change the status of this bug to dup.

If you pull today's git mesa master you should be able to workaround by running
the apps with the env var vblank_mode=0 set, so try -

vblank_mode=0 etracer

It doesn't work for me from ~/.drirc for some reason.

You should still get a different sort of vsync, but only when full screen.

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[Bug 29098] xf86-video-ati with KMS flickering on OpenGL applications and video playback

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29098

--- Comment #4 from Shlomi Steinberg <ssteinberg@gmail.com> 2010-07-16 06:12:15 PDT ---
vblank_mode=0 changed nothing. Nor does it disable vsync in windowed glxgears.

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[Bug 29098] xf86-video-ati with KMS flickering on OpenGL applications and video playback

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29098

--- Comment #5 from Andy Furniss <lists@andyfurniss.entadsl.com> 2010-07-16 06:30:21 PDT ---
(In reply to comment #4)
> vblank_mode=0 changed nothing. Nor does it disable vsync in windowed glxgears.

Hmm, Works for my rv670.

Did you make distclean, git pull, and build today's mesa master? I guess for
glx* you probably need to restart X after as well.

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[Bug 29098] xf86-video-ati with KMS flickering on OpenGL applications and video playback

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=29098

Shlomi Steinberg <ssteinberg@gmail.com> changed:

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

--- Comment #6 from Shlomi Steinberg <ssteinberg@gmail.com> 2010-07-16 08:16:32 PDT ---
Yep, now works perfectly with vblank_mode=0.
Thank you.

drirc is being ignored for me as well though. Kinda annoying.

*** This bug has been marked as a duplicate of bug 28341 ***

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