does this patch help? https://patchwork.kernel.org/patch/499221/ thanks, rui On Mon, 2011-01-24 at 10:57 +0800, Norbert Preining wrote: > Hi everyone, > > I have seen that on lkml, too, and experience it myself: Suddenly the > backlight is gone: > [ 2.018622] No ACPI video bus found > up to 2.6.37 there was one ... > > There are some other things regarding i915/drm in my dmesg: > [ 1.520109] [drm] Initialized drm 1.1.0 20060810 > [ 1.520190] i915 0000:00:02.0: power state changed by ACPI to D0 > [ 1.520246] i915 0000:00:02.0: power state changed by ACPI to D0 > [ 1.520305] i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 > [ 1.520363] i915 0000:00:02.0: setting latency timer to 64 > [ 1.572889] i915 0000:00:02.0: irq 43 for MSI/MSI-X > [ 1.572895] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010). > [ 1.572952] [drm] Driver supports precise vblank timestamp query. > [ 1.573312] [drm:intel_dsm_pci_probe] *ERROR* failed to get supported _DSM functions > [ 1.620092] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem > [ 2.015219] Console: switching to colour frame buffer device 200x56 > [ 2.018568] fb0: inteldrmfb frame buffer device > [ 2.018590] drm: registered panic notifier > [ 2.018622] No ACPI video bus found > [ 2.018842] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0 > > That is with latest git kernel. > > Anything else needed here? > > Best wishes > > Norbert > ------------------------------------------------------------------------ > Norbert Preining preining@{jaist.ac.jp, logic.at, debian.org} > JAIST, Japan TeX Live & Debian Developer > DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094 > ------------------------------------------------------------------------ > BOOK There is a theory which states that if ever anyone discovers > exactly what the Universe is for and why it is here, it will > instantly disappear and be replaced by something even more > bizarrely inexeplicable. > There is another theory which states that this has already happened. > --- Introduction to Fit the Seventh. > --- Douglas Adams, The Hitchhikers Guide to the Galaxy > -- > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
