i915 graphics errors detected

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07-11-2011, 04:50 AM
kl522

i915 graphics errors detected

When I use Knoppix 6.4.4 on my dell notebook with intel graphics, I got
this in the 'dmesg' output. Anyone see the same thing on their i915
intel graphics ? I found many similar posts on the net, but none has
provided with a fix.

Code:

[drm] Initialized drm 1.1.0 20060810 [ 33.290603] i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 33.290609] i915 0000:00:02.0: setting latency timer to 64 [ 33.309484] mtrr: type mismatch for e0000000,10000000 old: write-back new: write-combining [ 33.309487] [drm] MTRR allocation failed. Graphics performance may suffer. [ 33.312984] i915 0000:00:02.0: irq 45 for MSI/MSI-X [ 33.379226] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem [ 33.380025] render error detected, EIR: 0x00000010 [ 33.380025] IPEIR: 0x00000000 [ 33.380025] IPEHR: 0x00000000 [ 33.380025] INSTDONE: 0xfffffffe [ 33.380025] INSTPS: 0x00000000 [ 33.380025] INSTDONE1: 0xffffffff [ 33.380025] ACTHD: 0x02000000 [ 33.380025] page table error [ 33.380025] PGTBL_ER: 0x00100000 [ 33.380025] [drm:i915_report_and_clear_eir] *ERROR* EIR stuck: 0x00000010, masking
07-11-2011, 04:47 PM
utu

I've got an Inspiron 1545; dmesg | grep 915 gives me:

[ 21.812915] atkbd serio0: Use 'setkeycodes e00d <keycode>' to make it known.
[ 48.512525] i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 48.512531] i915 0000:00:02.0: setting latency timer to 64
[ 48.534182] i915 0000:00:02.0: irq 43 for MSI/MSI-X
[ 48.966912] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
07-11-2011, 05:14 PM
utu

dmesg | grep -i error gives, among other things that are probably not pertinent:

[ 48.588813] [drm:intel_panel_get_max_backlight] *ERROR* fixme: max PWM is zero.
[ 48.983136] [drm:intel_panel_get_max_backlight] *ERROR* fixme: max PWM is zero.
[ 48.990094] [drm:intel_panel_get_max_backlight] *ERROR* fixme: max PWM is zero.
[ 48.990099] [drm:intel_panel_get_max_backlight] *ERROR* fixme: max PWM is zero.

The backlight problem is a known problem, which doesn't affect me using the laptop
as a desktop.