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Description of problem: Brightness buttons do not work; when the brightness up or down buttons are pushed, the brightness icon appears on the screen, but the brightness does not change. Version-Release number of selected component (if applicable): Fedora 19 stock kernel How reproducible: every time Steps to Reproduce: 1. Push Fn + F4 or Fn + F5 2. Brightness icon appears 3. No change in brightness Actual results: Nothing happens Expected results: Brghtness/backlight change Additional info:
The same here with Laptop Fujitsu Lifebook E8420. The FN-Keys don't change the backlight. The symbol occurs on the screen, but the backlight doesn't change the brightness. In gnome-shell the slider in the upper right menu works fine. lspci -nn 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) Fedora 20 beta, kernel 3.11.9
same thing now happening with Fedora 20. It had worked fine for some time after first fedora 20, but after some yum updates, it started happening again :(
I have the same thing happen on a hp/compaq 6510b laptop with intel graphics on gnome. Does not happen when I switch to MATE, fn keys work fine.
Can anyone who had this problem in Fedora 20 test in 21? Some brightness-related things have been fixed in the newer version for me.
See also Bug 1206036.
This debugging guide helped me a lot; perhaps it will help other screen brightness problem sufferers: http://hansdegoede.livejournal.com/13889.html
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Fedora 20 changed to end-of-life (EOL) status on 2015-06-23. Fedora 20 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.