[Bug 39121] New: Random black shaped artifacts in gnome-shell

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bugzilla-daemon＠freedesktop.org

10 Jul 2011 10 Jul '11

10:02 p.m.

https://bugs.freedesktop.org/show_bug.cgi?id=39121

Summary: Random black shaped artifacts in gnome-shell Product: Mesa Version: git Platform: x86-64 (AMD64) OS/Version: Linux (All) Status: NEW Severity: major Priority: medium Component: Drivers/Gallium/r600 AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: vljn@ovi.com

Created an attachment (id=48943) --> (https://bugs.freedesktop.org/attachment.cgi?id=48943) Picture of an artifact

There are some black shaped artifacts occuring over window on gnome-shell. I managed to record a video and extract an image displaying such an artifact.

This bug is not deterministic, however it is very frequent : to make it appears, I only moved a terminal window on the bottom edge of the screen.

Note that this bug is not specific to gnome-shell, it also appears on kwin effect in kde, and in others circumstance in gnome-shell, but the scenario described above is the easiest to reproduce.

My hardware is AMD Zacate E350 (evergreen based), using Mesa 7.11 rc1 (bug is also in 7.10.x) on opensuse 11.4 64bits(is also on Fedora 15), with r600g drivers, libdrm 2.4.26 and ati ddx 14.2, kernel 2.6.39.

Vincent

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bugzilla-daemon＠freedesktop.org

10 Jul 10 Jul

10:22 p.m.

New subject: [Bug 39121] Random black shaped artifacts in gnome-shell

https://bugs.freedesktop.org/show_bug.cgi?id=39121

--- Comment #1 from Alex Deucher agd5f@yahoo.com 2011-07-10 15:22:23 PDT --- Please attach your xorg log and config and dmesg output.

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bugzilla-daemon＠freedesktop.org

11 Jul 11 Jul

11:30 a.m.

New subject: [Bug 39121] Random black shaped artifacts in gnome-shell

https://bugs.freedesktop.org/show_bug.cgi?id=39121

--- Comment #2 from vincent vljn@ovi.com 2011-07-11 04:30:01 PDT --- Created an attachment (id=48966) --> (https://bugs.freedesktop.org/attachment.cgi?id=48966) dmesg output

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bugzilla-daemon＠freedesktop.org

11:30 a.m.

New subject: [Bug 39121] Random black shaped artifacts in gnome-shell

https://bugs.freedesktop.org/show_bug.cgi?id=39121

--- Comment #3 from vincent vljn@ovi.com 2011-07-11 04:30:35 PDT --- Created an attachment (id=48967) --> (https://bugs.freedesktop.org/attachment.cgi?id=48967) Xorg.log

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bugzilla-daemon＠freedesktop.org

11:31 a.m.

New subject: [Bug 39121] Random black shaped artifacts in gnome-shell

https://bugs.freedesktop.org/show_bug.cgi?id=39121

--- Comment #4 from vincent vljn@ovi.com 2011-07-11 04:31:03 PDT --- Created an attachment (id=48968) --> (https://bugs.freedesktop.org/attachment.cgi?id=48968) xorg.conf

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bugzilla-daemon＠freedesktop.org

11:33 a.m.

New subject: [Bug 39121] Random black shaped artifacts in gnome-shell

https://bugs.freedesktop.org/show_bug.cgi?id=39121

--- Comment #5 from vincent vljn@ovi.com 2011-07-11 04:33:22 PDT --- Here they are.

Please note that Gnome screencast (ctrl + alt + shift + r) does not record the issue. That's why I used my smartphone to record the video (and explain blurryness...beware it records at 25 fps on a 60 fps screen, frames can be blended by the recorder device)

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bugzilla-daemon＠freedesktop.org

12:55 p.m.

New subject: [Bug 39121] Random black shaped artifacts in gnome-shell

https://bugs.freedesktop.org/show_bug.cgi?id=39121

Alex Deucher agd5f@yahoo.com changed:

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bugzilla-daemon＠freedesktop.org

12:55 p.m.

New subject: [Bug 39121] Random black shaped artifacts in gnome-shell

https://bugs.freedesktop.org/show_bug.cgi?id=39121

Alex Deucher agd5f@yahoo.com changed:

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bugzilla-daemon＠freedesktop.org

12:56 p.m.

New subject: [Bug 39121] Random black shaped artifacts in gnome-shell

https://bugs.freedesktop.org/show_bug.cgi?id=39121

Alex Deucher agd5f@yahoo.com changed:

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bugzilla-daemon＠freedesktop.org

12:59 p.m.

New subject: [Bug 39121] Random black shaped artifacts in gnome-shell

https://bugs.freedesktop.org/show_bug.cgi?id=39121

--- Comment #6 from Alex Deucher agd5f@yahoo.com 2011-07-11 05:59:56 PDT --- Do either of the following options help (put them in the device section of your xorg config)?

Option "EnablePageFlip" "False" Option "ColorTiling" "True"

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bugzilla-daemon＠freedesktop.org

1:13 p.m.

New subject: [Bug 39121] Random black shaped artifacts in gnome-shell

https://bugs.freedesktop.org/show_bug.cgi?id=39121

--- Comment #7 from vincent vljn@ovi.com 2011-07-11 06:13:09 PDT --- Disabling EnablePageFlip indeed solves the issue.

Is it a bug from page flipping or an "expected" behaviour ?

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bugzilla-daemon＠freedesktop.org

1:20 p.m.

New subject: [Bug 39121] Random black shaped artifacts in gnome-shell

https://bugs.freedesktop.org/show_bug.cgi?id=39121

--- Comment #8 from Alex Deucher agd5f@yahoo.com 2011-07-11 06:20:36 PDT --- It's a bug. Please try the latest 3.0 drm-fixes branch in Dave's kernel repo to see if it works any better: http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=shortlog;h=r...

There are several pageflipping related fixes since 2.6.39.

Specifically: http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h... http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h...

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bugzilla-daemon＠freedesktop.org

11:29 p.m.

New subject: [Bug 39121] Random black shaped artifacts in gnome-shell

https://bugs.freedesktop.org/show_bug.cgi?id=39121

vincent vljn@ovi.com changed:

--- Comment #9 from vincent vljn@ovi.com 2011-07-11 16:29:20 PDT --- Sorry for the delay (compiling a kernel is time consuming).

I applied both patches to 2.6.39 kernel and it solved the issue. Thank.

Are they going upstream in kernel 3.0 ?

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bugzilla-daemon＠freedesktop.org