[Bug 37679] [RS690M] No 3d acceleration in Radeon X1200 with the new Gallium r300 / 3d drivers

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=37679

--- Comment #78 from katabami <katabami at lavabit.com> 2011-10-20 18:05:45 PDT ---
I patched 3.0.4. It's a must-have, but not simple.

It partially fixes. "black box glxgears" nor "irq count freeze" never happen.
"pageflip" on-or-off doesn't matter. Xorg.0.log isn't affected. dmesg is the
same with unpatched 3.0.4, except MSI:
------------------------------------------------------------------------
@@ -8,12 +8,10 @@
 radeon 0000:01:05.0: GTT: 512M 0x0000000060000000 - 0x000000007FFFFFFF
 [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
 [drm] Driver supports precise vblank timestamp query.
+radeon 0000:01:05.0: irq 42 for MSI/MSI-X
+radeon 0000:01:05.0: radeon: using MSI.
 [drm] radeon: irq initialized.
 [drm] Detected VRAM RAM=128M, BAR=128M
 [drm] RAM width 128bits DDR
------------------------------------------------------------------------

Glxgears fps is always only 60 (which is 240 with good kms), regardless of
"pageflip" or "vblank_mode=0".

But that's not all; The first time I booted the patched kenel, right after udev
loaded the module, (I was on VT1) it seemed ok - the screen went high
resolution, the previous screen contents were correctly shown, and the cursor
continued blinking - but it halted there. Keypresses are echoed to the screen,
but Ctrl+Alt+Del didn't work. 

It happened only once, and after that, all 5 boots were successful.

It also seems to have a nice side effect; when kms is enabled in the bad
kernel, I often experinced a problem in s2ram, but with your patch s2ram has
succeeded in some 10 trials in row. So I think we're in the right direction.
(The problem was that for most times suspend doesn't complete, or takes too
long, after the screen turns black.)

Since I don't need opengl, I'm quite satisfied with this patch. =P

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