[Bug 12567] External display gows blank when lid opened on R52

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=12567





------- Comment #5 from gemkow at ikr.uni-stuttgart.de  2007-09-26 14:16 PST -------
(In reply to comment #4)
> If you don't have any apci modules loaded then I suspect the bios is
> banging on the HW directly when it gets a lid event.  Since these are 
> thinkpads, I'd suggest loading the thinkpad acpi modules and setting
> the event mask to  produce only events rather than calling the bios
> methods.  Obviously something is trashing the state and it's not the
> driver (it doesn't get any acpi events), so it's probably the bios.

This was my first thought too and I checked this and it doesnt work.

I thought it is a driver problem because the driver gets "something"
which leads to a new output probe (see the attached log files, the
second is taken directly after opening the lid and the driver was
triggered by "something").

I have not yet understood how output changes are recognized by the
server but something triggers this (without changing the xrandr-visible
configuration, the output of xrandr did not change after opening the lid.


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