Matthew Garret asked me to test a patch he located below, which appears to solve the problem. I can't manually trigger the bug, so I had to test based on whether the system crashes in reasonable time or not.
To this end, I typically crash in about an hour**, give or take 45 minutes; picking a few (6) approximate variations I come up with 27.386 minutes for a standard deviation*. I've been up for 17h35m now, so I'm about 38.5 standard deviations above the mean; 5 standard deviations gives a 99.9999999% probability of the result being non-chance, 38.5 means the sun should burn out before this happens. In short, I'm pretty certain the below patch fixes the problem: http://webcvs.freedesktop.org/dri/drm/shared-core/via_mm.c?r1=1.21&r2=1.22&makepatch=1&diff_format=u In case anyone doesn't get it, sizeof(int) != sizeof(long) on 64-bit systems. *My variations are {25,30,15,45,10,25} from 60, in minutes. It doesn't matter whether they're negative or positive; standard deviation is calculated by (sum(variation^2))^(1/2), so the sign is lost. **My mean and variations are highly approximated. I have not made 2 hours, but I've made an hour, and also had failures within 10 minutes. Under these assumptions it is always provable to better than 99.999% that the increased system stability is related by non-chance to the changes made. -- Solid hangs in VIA glx code https://launchpad.net/bugs/29586 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
