http://bugzilla.kernel.org/show_bug.cgi?id=10139
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------- Comment #2 from [EMAIL PROTECTED] 2008-03-05 21:56 -------
Please attach the lspci output.
If you are using a Intel graphic chipset, I think (In reply to comment #0)
> Using the new fujitsu-laptop module on my lifebook p7010 I have encountered a
> peculiar problem that confuses user space tools such as xbacklight which can
> set the brightness of the panel.
Which mode of xbacklight are you using?
please refer to http://bugzilla.kernel.org/show_bug.cgi?id=9625#c7
> For example, if brightness is set 100% cat
> /sys/class/backlight/fujitsu-laptop/brightness returns 7. As does cat
> /sys/class/backlight/fujitsu-laptop/actual_brightness. Decreasing the the
> brightness through the sysfs interface by echoing, say, 4 to
> fujitsu-laptop/brightness, also changes the value that resides in
> actual_brightness.
Hmm, xbacklight will not looking for /sys/class/backlight/fujitsu-laptop/ dir
at all. So the invalid value from "brightness" has no impact to xbacklight.
> However (and this is the problem), changing the brightness by means of the
> Fn-keys, 'actual_brightness' is changed but not 'brightness'.
In fact, the xbacklight looks for the "actual_brightness" rather than the
"brightness" file.
Khashayar, could you give a more detailed description of the problem you get
please? i.e. why you think the xbacklight is confused?
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