Ubuntu
linux package

  1. Bug #573984
  2. Comment #34

Comment 34 for bug 573984

Revision history for this message
sashoalm (sashoalm) wrote :

SOLVED (for my laptop at least - Acer Aspire 5740)

The trick was to add "acpi_osi=" (without the quotation marks) to the GRUB parameters. Setting the parameter to an empty string means that no OS is reported to the BIOS. By default acpi_osi is set to Windows NT. I had previously tried "acpi_osi=Linux" but it didn't work, apparently it had to be an empty string.

The brightness keys work now :-)