https://bugs.freedesktop.org/show_bug.cgi?id=50857
Bug #: 50857 Summary: Invalid command stream with CAICOS when ColorTiling2D enabled Classification: Unclassified Product: Mesa Version: 8.0 Platform: x86-64 (AMD64) OS/Version: Linux (All) Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/r600 AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: rankincj@googlemail.com
This might also be a bug in Linux kernel or radeon_drv.so.
Just upgraded my 64 bit HD6450 machine to Fedora 17, and gnome-shell fails immediately (login screen). Disabling ColorTiling2D in xorg.conf fixes it. ColorTiling2D worked OK - or did nothing - in Fedora 16 with radeon_drv.so from git and 3.3.7 kernel.
dmesg log and lspci output are attached.