I am seeing problems on 2.6.36-rc7 based kernels. The error always happens during a channel destruction (always gallium on channel 3 in my tests), and always looks like this : <3>[ 612.115977] [drm] nouveau 0000:01:00.0: AIII, invalid/inactive channel id 128 <6>[ 612.115987] [drm] nouveau 0000:01:00.0: PGRAPH_DATA_ERROR - Ch -1/3 Class 0x5039 Mthd 0x0184 Data 0x00000000:0x00000e02 <6>[ 612.115990] [drm] nouveau 0000:01:00.0: PGRAPH_DATA_ERROR - INVALID_OBJECT
This is associated with screen corruptions, mostly all fonts/icons disappearing. The oldest commit where I could see the error during a full piglit run : commit ea645107d204ebb9c6da494b8fc82e03d74e4513 Author: Ben Skeggs <[email protected]> Date: Tue Oct 12 08:01:59 2010 +1000 drm/nouveau: fix thinko in channel locking in semaphore path But I might have seen troubles with older commits (still 2.6.36-rc7 based). And I still don't know if the issue is always triggered by the same piglit tests or not. But with a later commit, the issue became much more frequent, triggered by many piglit tests, so I could easily isolate one (fdo10370) which reproduces the issue almost every time : commit 36a7ebda99e904a66188c7304d033e81780455e2 Author: Francisco Jerez <[email protected]> Date: Mon Oct 18 03:53:39 2010 +0200 drm/nouveau: Refactor context destruction to avoid a lock ordering issue. Reversing pfifo and pgraph destruction order as before, and the issue becomes less frequent again. I would love to know if anyone at all ever managed to reproduce this. _______________________________________________ Nouveau mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/nouveau
