[Bug 54002] New: Massive screen corruption on Cayman

[Bug 54002] New: Massive screen corruption on Cayman

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https://bugs.freedesktop.org/show_bug.cgi?id=54002

             Bug #: 54002
           Summary: Massive screen corruption on Cayman
    Classification: Unclassified
           Product: DRI
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: v10lator@myway.de


Created attachment 66058
  --> https://bugs.freedesktop.org/attachment.cgi?id=66058
Corrupted desktop

I just updated mesa, libdrm snd the xf86-video-radeon to the newest git
versions and now my screen is massivly corrupted (see the attached image).
As you see this corruption isn't everywhere. By writing this text it flashed
(sometimes more corrupt, sometimes less, sometimes not at all).

No information at dmesg nor Xorg.0.log available.

Kernel in use: Unpatched 3.6-rc3

BTW: It's hard to write a bug report with a corrupted screen (will attach a
screenshot, too, so you got something to laugh).

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[Bug 54002] Massive screen corruption on Cayman

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https://bugs.freedesktop.org/show_bug.cgi?id=54002

--- Comment #1 from Thomas Rohloff <v10lator@myway.de> 2012-08-24 11:25:09 UTC ---
Created attachment 66059
  --> https://bugs.freedesktop.org/attachment.cgi?id=66059
bugs.freedesktop.org with the corruption

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[Bug 54002] Massive screen corruption on Cayman

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https://bugs.freedesktop.org/show_bug.cgi?id=54002

--- Comment #2 from Thomas Rohloff <v10lator@myway.de> 2012-08-24 11:34:30 UTC ---
Created attachment 66060
  --> https://bugs.freedesktop.org/attachment.cgi?id=66060
radeontop

I just noticed that the GPU usage is very high (radeontop), so high that the
desktop gets unusable in the LOW power profile. It spins between 20 and 80%

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[Bug 54002] Massive screen corruption on Cayman

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https://bugs.freedesktop.org/show_bug.cgi?id=54002

--- Comment #3 from Michel Dänzer <michel@daenzer.net> 2012-08-24 12:02:27 UTC ---
> I just updated mesa, libdrm snd the xf86-video-radeon to the newest git
> versions and now my screen is massivly corrupted (see the attached image).

Can you isolate which update caused the problem?


> No information at dmesg nor Xorg.0.log available.

Please always attach them to bug reports anyway.

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[Bug 54002] Massive screen corruption on Cayman

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https://bugs.freedesktop.org/show_bug.cgi?id=54002

--- Comment #4 from Thomas Rohloff <v10lator@myway.de> 2012-08-24 12:11:38 UTC ---
Created attachment 66062
  --> https://bugs.freedesktop.org/attachment.cgi?id=66062
Xorg.0.log

(In reply to comment #3)
> Can you isolate which update caused the problem?
I don't remember the version of mesa before and it's not in the emerge.log
(gentoo). But I'll try my best to get it. If you have any ideas feel free to
share them.

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[Bug 54002] Massive screen corruption on Cayman

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https://bugs.freedesktop.org/show_bug.cgi?id=54002

--- Comment #5 from Thomas Rohloff <v10lator@myway.de> 2012-08-24 12:12:28 UTC ---
Created attachment 66063
  --> https://bugs.freedesktop.org/attachment.cgi?id=66063
dmesg

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[Bug 54002] Massive screen corruption on Cayman

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--- Comment #6 from Thomas Rohloff <v10lator@myway.de> 2012-08-24 12:44:33 UTC ---
Okay, found a good commit and am bisecting. :)

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[Bug 54002] Massive screen corruption on Cayman

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https://bugs.freedesktop.org/show_bug.cgi?id=54002

--- Comment #7 from Thomas Rohloff <v10lator@myway.de> 2012-08-24 16:53:47 UTC ---
Created attachment 66074
  --> https://bugs.freedesktop.org/attachment.cgi?id=66074
My .drirc

The bad commit is e7c177ec9e37d0c406c3b0ef8f228159d7ee5d69 ( st/dri: use driver
name for driconf section lookup ) which sounds a bit weird.
So I'm uploading my .drirc

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[Bug 54002] Massive screen corruption on Cayman

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https://bugs.freedesktop.org/show_bug.cgi?id=54002

--- Comment #8 from Thomas Rohloff <v10lator@myway.de> 2012-08-24 17:00:50 UTC ---
If I set "pp_jimenezmlaa_color" to "0" everything is fine.

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[Bug 54002] Massive screen corruption on Cayman

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https://bugs.freedesktop.org/show_bug.cgi?id=54002

--- Comment #9 from Thomas Rohloff <v10lator@myway.de> 2012-08-24 17:04:04 UTC ---
Well, it's reduced to a minimum, not solved. Need some more testing.

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[Bug 54002] Massive screen corruption on Cayman

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https://bugs.freedesktop.org/show_bug.cgi?id=54002

--- Comment #10 from Thomas Rohloff <v10lator@myway.de> 2012-08-24 17:39:49 UTC ---
with both, ""pp_jimenezmlaa_color" and "pp_jimenezmlaa" setted to 0 it seems to
be fixed completely. But I don't think activated MLAA should cause this.

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[Bug 54002] Massive screen corruption with MLAA on Cayman

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https://bugs.freedesktop.org/show_bug.cgi?id=54002

Thomas Rohloff <v10lator@myway.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Massive screen corruption   |Massive screen corruption
                   |on Cayman                   |with MLAA on Cayman

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[Bug 54002] Massive screen corruption with MLAA on Cayman

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https://bugs.freedesktop.org/show_bug.cgi?id=54002

--- Comment #11 from Vadim Girlin <ptpzz@yandex.ru> 2012-08-24 18:26:44 UTC ---
(In reply to comment #7)
> Created attachment 66074 [details]
> My .drirc
> 
> The bad commit is e7c177ec9e37d0c406c3b0ef8f228159d7ee5d69 ( st/dri: use driver
> name for driconf section lookup ) which sounds a bit weird.
> So I'm uploading my .drirc

That commit makes mesa use real driver name ("r600") when it selects the device
section from drirc. Before that patch "dri" was used instead. As long as your
drirc doesn't have "dri" section (there are "r600" and "dri2"), then I think it
was not used at all, so defaults were used. And now the settings from the
"r600" section were activated after that commit.

Probably you tried to enable MLAA earlier, that's why it was turned on in your
drirc (but not active before that patch). I'm not sure how the MLAA should
work, but your screenshot looks really antialiased, so probably it works now.

You might want to try removing/renaming '.drirc' to use default settings again,
if you aren't sure how to restore correct settings manually. Also you might use
'driconf' utility that will create '.drirc' with default settings for you if it
doesn't exist.

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[Bug 54002] Massive screen corruption with MLAA on Cayman

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https://bugs.freedesktop.org/show_bug.cgi?id=54002

--- Comment #12 from Thomas Rohloff <v10lator@myway.de> 2012-08-24 18:43:22 UTC ---
(In reply to comment #11)
I fully understand what the commit did. But I don't think MLAA should make the
screen look like this, else nobody should enable it, so it's useless. Don't you
agree?

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[Bug 54002] Massive screen corruption with MLAA on Cayman

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https://bugs.freedesktop.org/show_bug.cgi?id=54002

--- Comment #13 from Vadim Girlin <ptpzz@yandex.ru> 2012-08-24 19:24:25 UTC ---
(In reply to comment #12)
> (In reply to comment #11)
> I fully understand what the commit did. But I don't think MLAA should make the
> screen look like this, else nobody should enable it, so it's useless. Don't you
> agree?

I think it should be enabled for some graphical applications only (games etc),
not for all applications by default. drirc allows to use different settings for
specific apps based on the executable name.

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[Bug 54002] Massive screen corruption with MLAA on Cayman

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--- Comment #14 from Alexandre Demers <alexandre.f.demers@gmail.com> 2012-08-25 03:56:27 UTC ---
MLAA seems to be doing exactly as under Windows. I saw the same thing with
Catalyst on Windows 7 mostly in Messenger. See
http://www.sevenforums.com/software/182520-msn-live-messenger-browser-problem.html,
http://www.sevenforums.com/software/182520-msn-live-messenger-browser-problem.html
and comments in
http://www.sevenforums.com/graphic-cards/166423-text-looks-if-water-has-been-poured.html

So, for some reason, MLAA doesn't behave as expected with some applications (2D
content where it "shouldn't")

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[Bug 54002] Massive screen corruption with MLAA on Cayman

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Alex Deucher <agd5f@yahoo.com> changed:

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

--- Comment #15 from Alex Deucher <agd5f@yahoo.com> 2012-08-25 13:09:46 UTC ---
(In reply to comment #14)
> MLAA seems to be doing exactly as under Windows. I saw the same thing with
> Catalyst on Windows 7 mostly in Messenger. See
> http://www.sevenforums.com/software/182520-msn-live-messenger-browser-problem.html,
> http://www.sevenforums.com/software/182520-msn-live-messenger-browser-problem.html
> and comments in
> http://www.sevenforums.com/graphic-cards/166423-text-looks-if-water-has-been-poured.html
> 
> So, for some reason, MLAA doesn't behave as expected with some applications (2D
> content where it "shouldn't")

When you turn on MLAA in your drirc, it applies to all 3D applications.  If you
are using a 3D compositor (compiz, gnome shell, kwin, etc.) as a window
manager, it will also apply to X apps.  If you want to enable MLAA you'll need
to specify what apps you want it to apply to in your drirc.

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