@Guilherme:
This appears to be the stack trace where the issue arises:
1) | drm_ioctl() {
1) 0.421 us | drm_ut_debug_printk();
1) | i915_gem_set_domain_ioctl() {
1) 0.624 us | drm_gem_object_lookup();
1) 0.504 us | intel_mark_busy();
1) | i915_gem_object_set_to_gtt_domain() {
1) 0.456 us | i915_gem_object_flush_gpu_write_domain();
1) | i915_gem_object_wait_rendering() {
1) | i915_do_wait_request() {
1) 2.018 us | i915_user_irq_get();
At this point it would be helpful if we could confirm this as being
present in the latest mainline kernel or not. If it is, we will need to
open a bug against the i915 driver to get this resolved as it's beyond
my ability to figure out what is going wrong here. The issue seems to be
a real software-hardware interaction issue and not a pure software bug.
Please download and test the latest mainline kernel from
http://kernel.ubuntu.com/~kernel-ppa/mainline/.
Thanks
--
Hard freeze after upgrading to Lucid
https://bugs.launchpad.net/bugs/545039
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