[Bug 545039] Re: Hard freeze after upgrading to Lucid

[Chase Douglas]

@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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