Comment 53 for bug 28326

My Dell D620 is also exhibiting this or a closely related issue. Coming back from suspend I occasionally enter the gdm restart loop which terminates (with failure) after a couple of iterations.

An interesting thing is that this problem occurs more frequently after the machine has been suspended for a longer period of time. If I suspend the machine and immediately wake it back up, I almost never see this bug. However I see it about 20% of the time after the machine has been suspended for a few hours.

I'm going to try enabling SAVE_VIDEO_PCI_STATE=true in /etc/default/acpi-support and see if that makes a difference.

Here are the relevant details:
lspci:
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller (rev 03)

Xorg:
Error in I830WaitLpRing(), now is -354572395, start is -354574396
pgetbl_ctl: 0x3ffc0001 pgetbl_err: 0x0
ipeir: 0 iphdr: 0
LP ring tail: f8 head: 0 len: 1f001 start 0
eir: 0 esr: 1 emr: ffff
instdone: ffc1 instpm: 0
memmode: 10f instps: 2014c0
hwstam: fffe ier: 2 imr: 0 iir: 20
space: 130816 wanted 131064
(II) I810(0): [drm] removed 1 reserved context for kernel
(II) I810(0): [drm] unmapping 8192 bytes of SAREA 0xf8b8d000 at 0xb7a87000

Fatal server error:
lockup
<...snip...>
FatalError re-entered, aborting
lockup

-David Carr