Forwarding this bug from Ubuntu reporter Twig:
[i845] karmic fails to initialise display on boot. 2.6.31-3 + drm + Intel 845G
Regression between the 2.6.31-2 and -3 kernel results in no display (but everything else functions correctly).
[ 1.507428] Linux agpgart interface v0.103
[ 1.512917] agpgart-intel 0000:00:00.0: Intel 830M Chipset
[ 1.513083] agpgart-intel 0000:00:00.0: detected 892K stolen memory
[ 1.515801] agpgart-intel 0000:00:00.0: AGP aperture is 128M @ 0x88000000
[ 1.556813] [drm] Initialized drm 1.1.0 20060810
[ 1.578196] i915 0000:00:02.0: PCI INT A -> Link[LNKA] -> GSI 11 (level, low) -> IRQ 11
[ 1.578209] i915 0000:00:02.0: setting latency timer to 64
[ 1.724218] [drm] fb0: inteldrmfb frame buffer device
[ 1.724239] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
[ 1.737531] Console: switching to colour frame buffer device 128x48
[ 1.808850] render error detected, EIR: 0x00000010
[ 1.808854] page table error
[ 1.808856] PGTBL_ER: 0x00000011
[ 1.808861] [drm:i915_driver_irq_handler] *ERROR* EIR stuck: 0x00000010, masking
[ 1.808866] render error detected, EIR: 0x00000010
[ 1.808869] page table error
[ 1.808870] PGTBL_ER: 0x00000011
[ 1.821865] [drm] DAC-5: set mode 1024x768 c
Linux ub-desktop 2.6.31-3-generic #19-Ubuntu SMP Tue Jul 14 16:04:41 UTC 2009 i686 GNU/Linux
00:02.0 VGA compatible controller: Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 01)
Please let me know what further information I can provide.
Created attachment 28061 [details]
Created attachment 28062 [details]
Created attachment 28063 [details]
Created attachment 28064 [details]
What's the difference between -2 and -3?
The biggest difference between the 2.6.31-2 and 2.6.31-3 Ubuntu kernels is 2.6.31-3 rebased with mainline 2.6.31-rc3 from 2.6.31-rc2. I've pasted the short changelog below but it can also be seen at https://edge.launchpad.net/ubuntu/+source/linux .
@Twig, I can work with you in the Launchpad bug report to help narrow this down to an Ubuntu specific introduced regression of a regression between the vanilla mainline 2.6.31-rc2 and 2.6.31-rc3 kernels. We'll post our results back here. Thanks.
[ Andy Whitcroft ]
* Revert "Add splice-2.6.23.patch from AUFS to export a symbol needed by
* Revert "Add put_filp.patch from AUFS to export a symbol needed by AUFS"
* Revert "Add sec_perm-2.6.24.patch from AUFS - export
* clear out left over AUFS files and modifications
[ Luke Yelavich ]
* [Config] Enable CONFIG_USB_ISP116X_HCD on sparc
* SAUCE: Explicitly include header files to allow apparmor to build on
* [Config] Enable CONFIG_BLK_DEV_IDECD on powerpc
[ Tim Gardner ]
* [Config] Dropped ubuntu/misc/wireless/acx
* [Config] Disabled NDISWRAPPER until the compile issues are fixed.
[ Upstream ]
* Rebased to 2.6.31-rc3
Could you test my patches on bug #23082?
(In reply to comment #7)
> Could you test my patches on bug #23082?
Hi, I applied the two kernel patches with no result. I'm afraid I'm not sure how to apply the third patch.
Based on information from Twig in the Ubuntu bug report, I'm inclined to believe this is not an issue with the mainline kernel and is an Ubuntu specific issue:
"Just to clarify: The mainline kernel works fine. I can test the latest mainline but it won't be for a day or so.
None of the Ubuntu kernels work since rc2. . ."