Re: Intel, KMS, backlight not going back on after closing the lid

Any remarks on that, or suggestions where to post it. It is 100% =

reproducible, and turning KMS off fixes it, so it has to be in KMS?!?!

On Mo, 21 Dez 2009, Norbert Preining wrote:
> Hi everyone,
> =

> I have a very strange thing going on:
> laptop: sony vaio z11
> linux 2.6.32, 2.6.32.2
> Intel Mobile Intel=AE GM45 Express Chipset
> Debian/unstable up2date
> xserver-xorg-video-intel 2.9.1-1
> xserver-xorg 7.4-4
> KMS enabled in the kernel config file
> =

> The problem is that under special circumstances closing the lid and
> reopening it does not turn back on the backlight.
> =

> When I do NOT log into any session -> it works (backlight back on)
> when I log into a session that does not touch dri/drm -> it works
> 	(like twm, or lxde)
> when I log into a session with dri/drm (composite?) like kde/gnome
> 	-> backlight remains off after opening the lid and cannot
> 	   be reactivated again
> =

> I tried that several times and it is 100% reproducible.
> =

> As soon as I deactivate KMS it works again under all circumstances.
> =

> So I assume that it has something to do with the KMS, but I have
> no idea how to track that down any further.

Best wishes

Norbert
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Norbert Preining            preining@{jaist.ac.jp, logic.at, debian.org}
JAIST, Japan            TU Wien, Austria           Debian TeX Task Force
DSA: 0x09C5B094   fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
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