Hi Michel I sent most of this already to the Debian PowerPC mailing list so you may have already seen it.... Michel Dänzer wrote: >BTW, if you or anyone else having stability issues with radeon KMS in >AGP mode could try if the attached kernel patch makes a difference, that >would be interesting. I tried the patch, but sadly it made no difference. It still crashed with agpmode=1 or 4. This is on a G4 iBook mobility radeon 9200 (r200). Interestingly, using the Mate desktop environment, KMS is noticeably more stable. It can take some time for a crash to happen. Even when running compiz 0.8.6 I can have 'the cube' (sad I know) working and still no crash. In contrast, an LXDE, XFCE or KDE environment often causes an almost instant crash. This rather mirrors a problem I have with UMS and EXA. Unless I set my FBTexPercent very low I often get corruption in application windows. This can be just the window title bar, or toolbar or even the whole window. Even setting FBTexPerecent to zero I can still get this corruption. It's very annoying. Again, LXDE (or XFCE, KDE) is very prone to this problem (in particular PCManFM), but Mate doesn't seem so badly effected and it is why I'm running it. I was wondering if the KMS crash and this UMS problem were linked in some way since MATE seems to solve or lessen both problems? Attached is a screenshot of the UMS corruption. It's a XFCE environment, but the application is PCManFM. The trash icon at the bottom seems almost permanently corrupted. The corruption can be random pixels, or a repeated pattern. Often it is resembles another part or the screen stretched, shrunk, repeated etc. I have access to another iBook (mobility radeon 9550 -r300) and this has the same UMS corruption. I've searched for existing bug reports about it since surely it must be a common problem, but couldn't find any. I've not reported it before myself because I thought UMS wasn't supported anymore by the radeon developers. However, I've convinced myself now that it is linked in some way to the KMS crashes... I'm very keen to get KMS/UMS working properly on PowerPC, so if you need any more patches testing then I will gladly compile them. Btw, thanks for all the work you do with PowerPC! Adam
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