[Bug 61182] r600g causes KWin crashes with kernel 3.8

https://bugs.freedesktop.org/show_bug.cgi?id=61182

--- Comment #14 from Michael Mair-Keimberger bu9zilla@gmail.com --- (In reply to comment #12)

I think these are actually several bugs at play here.

1. CPU only has a 256 MB window into vram. If the window is full due to

fragmentation or other mapped buffers, we fail. Does disabling hyperz help? set env var R600_HYPERZ=0 (mesa 9.1 or older), or R600_DEBUG=nohyperz (mesa git).

2. running out of GPU accessible memory when migrating buffers. Does

setting radeon.gartsize=1024 on the kernel command line in grub help?

Just tried both, but nothing changed...