Ubuntu
linux package

  1. Bug #475429
  2. Comment #73

Comment 73 for bug 475429

Revision history for this message
In , Geir Ove Myhr (gomyhr) wrote :

(In reply to comment #10)
> The kernel patches are upstream as part of 2.6.35-rc4:
 [...]
> I believe that this fixes the page-flipping issues on i945.

Seems it didn't the current Ubuntu 10.10 (Maverick) development kernel is based on 2.6.35-rc5 and it still happens.

The original reporter says downstream:

It still freezes with Maverick (13th July), same as Tomas.

$cat /sys/kernel/debug/dri/0/i915_error_state
no error state collected

dmesg is attatched here.
dmesg shows that the freeze is caused by mutex lock.

It may be caused by below sequence.
1. mutex locked and not unlocked.
2. DRM_IOCTL_I915_GEM_PREAD wait the lock.
3. dmesg shows error ( 120s after freeze ).