http://bugzilla.kernel.org/show_bug.cgi?id=11769





------- Comment #30 from [EMAIL PROTECTED]  2008-11-13 08:30 -------
Created an attachment (id=18850)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=18850&action=view)
Various commands that show the brightness file levels w/ 2.6.27.5

Hello Zhang,

I have created a file which I hope will answer all your questions in comment
#29.  It is a test in 5 parts.  I have found 2 cases where the brightness does
not go back to 100% after switching to console.  In both cases,
acpi_video1/brightness contains the correct value (that matches the physical
level), and is non-zero.  In my previous tests, I always used acpi_video0,
which is probably why I never found these 2 successful cases before.

I also discovered this, in /var/log/Xorg.0.log:
(II) intel(0): found backlight control method /sys/class/backlight/acpi_video1


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