From: Zhang Rui <rui.zhang@intel.com>
To: Norbert Preining <preining@logic.at>
Cc: ACPI Devel Mailing List <linux-acpi@vger.kernel.org>
Subject: Re: backlight gone?
Date: Mon, 24 Jan 2011 11:24:50 +0800 [thread overview]
Message-ID: <1295839490.1866.798.camel@rui> (raw)
In-Reply-To: <20110124025720.GA25734@gamma.logic.tuwien.ac.at>
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
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> ------------------------------------------------------------------------
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next prev parent reply other threads:[~2011-01-24 3:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-24 2:57 backlight gone? Norbert Preining
2011-01-24 3:24 ` Zhang Rui [this message]
2011-01-24 16:26 ` Norbert Preining
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