Comment 202 for bug 120834

I am not sure if it's the same bug, my X server crashes and I have to reboot using ALT-PRINT-b, nothing else works. Screen blanks for half a second, comes back heavily distorted in the lower region and mouse is locked.
Xorg.0.log.old shows :

(II) intel(0): xf86BindGARTMemory: bind key 1 at 0x02529000 (pgoffset 9513)
(II) intel(0): xf86BindGARTMemory: bind key 2 at 0x093b3000 (pgoffset 37811)
(II) intel(0): xf86BindGARTMemory: bind key 3 at 0x0b88c000 (pgoffset 47244)
(II) intel(0): xf86BindGARTMemory: bind key 4 at 0x0dd65000 (pgoffset 56677)
(II) intel(0): Fixed memory allocation layout:
(II) intel(0): 0x00000000-0x0001ffff: ring buffer (128 kB)
(II) intel(0): 0x00020000-0x00029fff: HW cursors (40 kB)
(II) intel(0): 0x0002a000-0x00031fff: logical 3D context (32 kB)
(II) intel(0): 0x00032000-0x00041fff: exa G965 state buffer (64 kB)
(II) intel(0): 0x00042000-0x00042fff: overlay registers (4 kB)
(II) intel(0): 0x00050000-0x02528fff: front buffer (37732 kB)
(II) intel(0): 0x0077f000: end of stolen memory
(II) intel(0): 0x02529000-0x093b2fff: exa offscreen (113192 kB)
(II) intel(0): 0x093b3000-0x0b88bfff: back buffer (37732 kB)
(II) intel(0): 0x0b88c000-0x0dd64fff: depth buffer (37732 kB)
(II) intel(0): 0x0dd65000-0x0fd64fff: classic textures (32768 kB)
(II) intel(0): 0x10000000: end of aperture
(WW) intel(0): ESR is 0x00000001
(WW) intel(0): PRB0_CTL (0x0001f001) indicates ring buffer enabled
(WW) intel(0): PRB0_HEAD (0x014086f0) and PRB0_TAIL (0x000088a0) indicate ring buffer not flushed
(WW) intel(0): Existing errors found in hardware state.

my system:
Sony Vaio VGN-NR11Z
with GM965/GL960

attached lspci -vvnn and xorg.conf