Comment 123 for bug 541492

The same here as in comment #115: kernel 2.6.34-52 (2.6.34-52.1) from Brian Rogers' ppa freezes the system.

Dell Optiplex GX60
00:02.0 VGA compatible controller: Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 01)

libdrm 2.4.20~glasen~ppa4
xserver-xorg-video-intel 2:2.11.0+git20100529~glasen~ppa2
mesa 7.7.1-1ubuntu4~gpufix1

The freeze happens at the first modeswitch, i.e. so early during startup that I cannot dump an i915_error_state. My favourite kernel on this system is a drm-intel-next one from the Ubuntu Kernel Team 2.6.34-997.201004191525, i.e. without the V9 patch. The later drm-intel-next kernels from http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-next also freeze the system at the first mode switch. The 201004191525 kernel shows an i915 error at about the same time when its successors freeze but it continues:

dmesg:
......
[ 19.940083] intel8x0_measure_ac97_clock: measured 54713 usecs (2636 samples)
[ 19.940091] intel8x0: clocking to 48000
[ 21.583337] render error detected, EIR: 0x00000010
[ 21.583352] [drm:i915_handle_error] *ERROR* EIR stuck: 0x00000010, masking
[ 21.583385] render error detected, EIR: 0x00000010
[ 29.516031] eth0: no IPv6 routers present
[ 42.412078] end_request: I/O error, dev fd0, sector 0
[ 42.472101] end_request: I/O error, dev fd0, sector 0
end of dmesg

i915_error_state:
Time: 1275242616 s 587221 us
PCI ID: 0x2562
EIR: 0x00000010
  PGTBL_ER: 0x00000049
  INSTPM: 0x00000000
  IPEIR: 0x00000000
  IPEHR: 0x01000000
  INSTDONE: 0x00ffffc0
  ACTHD: 0x00000048
seqno: 0x00000002
--- ringbuffer = 0x00fdf000
00000000 : 02000000
00000004 : 00000000
00000008 : 18000001
0000000c : 01500001
00000010 : 01500024
00000014 : 00000000
00000018 : 02000004
0000001c : 00000000
00000020 : 10800001
00000024 : 00000080
00000028 : 00000001
0000002c : 01000000
00000030 : 02000000
00000034 : 00000000
00000038 : 10800001
0000003c : 00000080
00000040 : 00000002
00000044 : 01000000
00000048 : 00000000
...... all 00000000