Comment 53 for bug 445056

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Geir Ove Myhr (gomyhr) wrote : Re: [i945] (UXA) Intel Corporation 82945G/GZ Integrated Graphics Controller [8086:2772] (rev 02) freezes

Marco, the main point of downgrading is not to find a "better" version of mesa, but to try to identify when in the development cycle the problems were introduced. So I wouldn't worry about the Blender behaviour -- we know that a lot of bug in the Jaunty version of mesa that were affecting blender has been fixed in the Karmic version. The freeze is a bit more worrying, but if there is a very noticeable difference in how often the system freezes with mesa 7.5, we may still be able to find the point where it went from "almost good" to "bad" with respect to the freezes. What we want is to be able to tell the upstream developers that when they changed this or that, the frequent freezes appeared. Usually, identifying that is half the work of resolving the bug.

There is another confirmation at bug 450853 that downgrading to mesa 7.5 helps. The next step is to try and do some bisecting to find the bad commit. I will come back to that.