[Bug 28181] Combination of foss ati driver 6.13.0 and xorg-server 1.8.1 gives seg faults.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=28181

--- Comment #5 from Alex Deucher <agd5f at yahoo.com> 2010-05-26 15:27:33 PDT ---
(In reply to comment #4)
> I'm not 100% sure if it's related, but:
> 

It's not.  this bug is about a segfault.

> I'm using Gentoo with kernel 2.6.34, xf86-video-ati-6.13.0,
> xorg-server-1.8.1-r1, mesa-7.8.1 with a R300 (R9500), KMS enabled.
> 
> KDE 4.4.3 starts with no problems an runs stable, but the screen is totally
> corrupted beyond width about 2600px (I'm using dual-screen config).
> 
> After changing desktop effects rendering to XRender or disabling them
> completely everything is OK. 
> So I also suspect OpenGL to play some role here, but I have no idea how to
> debug this. The logs are clear.

That's not a bug it's a hardware limitation.  The max render target size on
r3xx is 2560x2560 pixels and the max textures size is 2048x2048 pixels.  if
your desktop is larger than that, it will not draw correctly.

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