Unable to set brightness in Power Management

Tommy He tommy.he at linux.com
Tue Mar 9 23:13:38 UTC 2010


The brightness shortcuts don't work, either. There is no slider in the place
where it used to be. gnome panel applet reported unable to acquire the
laptop LCD screen brightness information.

No matter I use Nvidia binary driver from rpmfusion nor nouveau gallium3d
driver, the situation remains the same: No way to adjust the brightness.

Running on Fedora 13 Alpha LiveCD does not make any difference. No such
problem with previous Fedora release. I used to run the same nivida binary
driver on Fedora 12. Slider was there.

http://www.smolts.org/client/show/pub_0b8133aa-815e-4c11-9e5f-f5ca20f88bb6

My dmesg message below:

http://pastebin.ca/1830842

I will see what happens on other laptop.

Kind regards,

Tommy He

On 9 March 2010 22:37, Matthias Clasen <mclasen at redhat.com> wrote:

> On Tue, 2010-03-09 at 16:54 +0000, Tommy He wrote:
> > Hello Fedora 13 testers,
> >
> > Did you notice that there is no longer a brightness control slider in
> > GNOME power management ?
> >
> > I noticed that after performed a suspend this morning and found the
> > screen kept dim forever. What I mean by forever is that even I
> > rebooted to the Fedora 13 LiveUSB, it was still dim! Hard to believe
> > but it is true.
> >
> > Finally I got the brightness back to normal by using a Fedora 12
> > LiveUSB and adjusting the brightness.
> >
> > For God sake, please do not tell me it is another decision following
> > upstream. I agree that not so many users would bother tweaking the
> > application menu. But the brightness control?
>
> The brightness keys on your keyboard don't work ? There is still a
> slider in the first tab of the power preferences, and the there is still
> an applet you can use (admittedly, it currently has some issues with
> mouse interaction, but works perfectly fine with the keyboard).
>
> So, what you describe certainly sounds like a bug, albeit a not very
> clearly described one.
>
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-- 
Take a Deep Breath out of Windows
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