Hi, I've got a MacBookAir4,2 (mid-2011 version with Sandy Bridge), and get pretty regular deadlocks in DRM. I'm not 100% sure they all have the same root cause: the most regular one seems to occur under fairly heavy I/O pressure, whereas this one just randomly happened whilst running the Clutter testsuite. The I/O one seems to be pretty easy to trigger; if the system is under heavy memory pressure and you do a lot of I/O, I can hit a deadlock pretty easily. My usual case for this is Chrome running with about a billion tabs open, a large compile just having finished, and then copying something between my encrypted /home and an external USB drive. I haven't got the trace for this handy but will try to dig it up out of logs, or get it the next time it happens. I've attached the one I just hit running the Clutter test suite (which seemed to start from a BUG and go downhill from there), which is also available at http://hastebin.com/detumihuju.xml If it helps, I'm running under GNOME Shell. Any advice/help/fixes welcome, please! Cheers, Daniel -------------- next part -------------- A non-text attachment was scrubbed... Name: snb-deadlock Type: application/octet-stream Size: 17346 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/intel-gfx/attachments/20120817/efae0aaf/attachment.obj>