[Bug 27529] [rs690m] Graphics corruption with ati x1200

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=27529

--- Comment #24 from steckdenis at yahoo.fr 2010-08-17 08:40:20 PDT ---
Created an attachment (id=37917)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=37917)
Screenshot of a part of my corrupted screen.

Hello,

The problem is still here. The fix I proposed only delays it one hour or more.

It is possible to trigger the corruption by playing a game that allocates many
GL objects. I used Plee the Bear, a 2D OpenGL-based game that uses many
textures. It loads about 60 megabytes in the video memory.

When the game is loading, my screen is filled with garbage from top to bottom,
in one second or two. It is progressive, and comes across my two screens (one
on the top or the other), without any distinction. It is mainly brown or dark
green, the colors used in Plee the Bear.

I attached a screenshot of a part of my screen. I see it as garbage in
KSnapshot, dolphin and Chromium, but as my video memory is corrupted, I cannot
garantee that this screenshot is as I see it. It normally shows a part of a
Konsole window, and a part of the one of Plee the Bear.

The problem arise also with other games, like Neverball, when I play it many
minutes, but Plee the Bear allocates so many GL textures that it triggers the
bug way faster.

I have 256Mb of shared video memory (RAM), and 128Mb of sideport memory. I use
an ATI Radeon X1270 (RS690M). I use Linux 2.6.35.1 (but it does the same with
the 2.6.36 kernel, before the -rc1 tag, but after the two merges of DRM), mesa
Git as of today, libdrm Git, Xorg 1.8 (the latest 1.8.x rc, the one packaged by
ArchLinux testing), xf86-video-ati 6.13.1. I used the Gallium r300g driver, but
the bug is also here with r300c.

Cheers. 

(oh, and as I was posting this comment, I scrolled another web page. My top
screen, the one without Chromium, was filled with white and small black pixels.
There is no particular pattern, but I can see the garbage layed out in small
64x64 squares. The scroll was very slow, but the web page looked nice.
Screenshot coming if I can).

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