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    SubjectRe: Thinkpad brightness keys kill X on 2.6.26.5
    On Tue 2008-09-30 17:59:06, Jeremy Fitzhardinge wrote:
    > Pavel Machek wrote:
    >> Hi!
    >>
    >>
    >>> I just upgraded from 2.6.25.17 to 2.6.26.5 on my Thinkpad Z61t, and found
    >>> the brightness keys will cause the X server to die. When using the
    >>> brightness up/down keys, the screen will go blank -- Control+Alt+F# will
    >>> still switch to a different virtual console, but switching back will not
    >>> restore the video state.
    >>>
    >>> After killing the window manager, I was able to bring up X again without
    >>> a problem -- but using the brightness keys still causes it to go blank
    >>> again within X, while the brightness does get changed correctly on the
    >>> console.
    >>>
    >>> There were no kernel messages, but this appeared in the Xorg log:
    >>>
    >>
    >> Yes, I had similar problems... for me it blanked screen on closing
    >> lid. Problem disappeared after upgrading X...
    >>
    >>
    >>> .config attached -- is this a known issue? In the meantime, I'm starting
    >>> a bisection to figure out where the problem crops up.
    >>>
    >>
    >> For me CONFIG_ACPI_VIDEO never really worked...
    >>
    >
    > On my shiny new X200 running Fedora Rawhide, I'm finding that the
    > brightness control keys work OK, but the backlight remains stuck off after
    > a resume. The machine is working fine but the backlight is just off; I can
    > see the display under a bright light. Switching consoles and poking about
    > in /sys/class/backlight/acpi_video?/ didn't help.

    What are you using for s2ram? s2ram -f -a 3 normally works on thinkpads...
    Pavel

    --
    (english) http://www.livejournal.com/~pavelmachek
    (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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