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  1. Bug #1229591
  2. Comment #0

Comment 0 for bug 1229591

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Chris Stratford (chris-gondolin) wrote : display brightness keys stop working after saucy upgrade

On raring (and precise) the display brightness keys (fn+f4 and fn+f5) on my Dell Inspiron 14z turned the brightness up and down. After a saucy upgrade this no longer happens (I don't see the popup brightness bubble either). The other, similar keys (volume adjustment, etc) still work fine.

Changing the values in /sys/class/backlight/intel_backlight/brightness works (temporarily - it gets reset after the screen lock kicks in)

I tried following the instructions in https://wiki.ubuntu.com/Hotkeys/Troubleshooting but this appears to be out of date (it references /usr/share/doc/udev/README.keymap.txt which does not exist)

$ lsb_release -rd
Description: Ubuntu Saucy Salamander (development branch)
Release: 13.10

$ apt-cache policy udev
udev:
  Installed: 204-0ubuntu12
  Candidate: 204-0ubuntu12
  Version table:
 *** 204-0ubuntu12 0
        500 http://gb.archive.ubuntu.com/ubuntu/ saucy/main amd64 Packages
        100 /var/lib/dpkg/status