kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Pander, thank you for reporting this and helping make Ubuntu better. Please execute the following command, as it will automatically gather debugging information, in a terminal:
apport-collect 1400050

** Package changed: ubuntu => linux (Ubuntu)

** Changed in: linux (Ubuntu)
   Importance: Undecided => Low

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1400050

Title:
  Brightness doesn't change anymore in X.Org / GNOME Shell in 14.10

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I have no idea to what package this belongs. Please file it under the
  correct one.

  Brightness doesn't change anymore in X.Org / GNOME Shell in 14.10. It
  stays on maximum (10) and sometimes the less brightness down/less key
  makes it go to 9 or 6. Each time I press the brightness down/less key,
  the overlay with brightness setting shows up (so the key works.

  I can set brightness to any level with
  echo 1 >/sys/class/backlight/acpi_video0/brightness
  echo 2 >/sys/class/backlight/acpi_video0/brightness
  ...
  echo 10 >/sys/class/backlight/acpi_video0/brightness
  and the display responds properly and I can read out the value with
  cat /sys/class/backlight/acpi_video0/brightness
  but changing it with keys only goes from 10 to 9 or 10 to 6.

  This used to work in older versions of Ubuntu. Please fix this and let
  me know how  I can fix this temporarily.

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