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[Bug 1527999] [NEW] Backlight not working on ASUS X401A: Lubuntu 15.10

 

Public bug reported:

The F5/F6 brightness keys no longer work, and the screen will blank
about 10s after I use <Fn><F5> or <Fn><F6>. I have to reboot to get the
screen back.

This didn't seem to be a problem before kernel 4.2, but not sure if it
was working on earlier 4.2 kernels (when I boot earlier 4.2 versions
now, I still get the same problem).

System details:-
Lubuntu 64bit 15.10
steve@steve-X401A1:~$ uname -a
Linux steve-X401A1 4.2.0-22-generic #27-Ubuntu SMP Thu Dec 17 22:57:08 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

** Affects: unity-control-center (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1527999

Title:
  Backlight not working on ASUS X401A: Lubuntu 15.10

Status in unity-control-center package in Ubuntu:
  New

Bug description:
  The F5/F6 brightness keys no longer work, and the screen will blank
  about 10s after I use <Fn><F5> or <Fn><F6>. I have to reboot to get
  the screen back.

  This didn't seem to be a problem before kernel 4.2, but not sure if it
  was working on earlier 4.2 kernels (when I boot earlier 4.2 versions
  now, I still get the same problem).

  System details:-
  Lubuntu 64bit 15.10
  steve@steve-X401A1:~$ uname -a
  Linux steve-X401A1 4.2.0-22-generic #27-Ubuntu SMP Thu Dec 17 22:57:08 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

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