Problems with ati driver on Tibook
John R. Dunning
jrd at jrd.org
Mon Jan 4 08:36:54 PST 2010
From: Alex Deucher <alexdeucher at gmail.com>
Date: Mon, 4 Jan 2010 11:11:08 -0500
I'm not sure if this sequence will cause any problems on PC laptops or
not, I suppose it depends on the oem, so I've made the patch
mac-specific for now. If the attached patch works for you, I'll go
ahead and commit it.
It seems to work so far. I still have other issues with this machine,
but with one exception, I don't think they're due to this driver.
FWIW, the code I altered is a fairly direct crib from the radeon_fb
driver in the kernel. See, for instance,
linux-2.6.31/src/drivers/video/aty.c, circa line 1020. That's pretty
clearly doing the same sort of thing I patched in the xf86-video-ati
driver, even has similar comments about asic bugs. That code is not
If you want to commit it, that's probably a step to the good. I have
one other wacky thing that happens to the screen "every once in a
while", if I track that down and it turns out to be in this driver,
I'll send another patch.
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