http://bugs.freedesktop.org/show_bug.cgi?id=16086





--- Comment #4 from heavytull <[EMAIL PROTECTED]>  2008-06-01 08:54:17 PST ---

(In reply to comment #1)
> This sounds like an acpi/bios issue.  What does the fn-f4 key actually do on
> your system? Does it execute an acpi method or does it generate an acpi event
> that is hooked to a script?
I actually do not know how to get such information. I think this is not an acpi
event because acpi I think is driven by the bios, so even without any OS i
could use Fn+F4 keys to switch the screen backlight off. before upgrading to
radeon 4.3.0 I couldn't switch off the screen backlight.

I can for now add some clarification to the bug: actually it seems pressing any
key after switching back on the backlight throws the computer into a crash. It
doesn't always happen, sometimes everything works alright.

>  If it's a script, what does that script do?  At
> the very least attach your xorg log and config and the output of dmesg.
> 


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