Ubuntu
linux package

  1. Bug #1167760
  2. Comment #3

Comment 3 for bug 1167760

Revision history for this message
Alex Hung (alexhung) wrote :

This bug is caused by BIOS reporting zero in _BQC when system boots up. As a result, kernel will set the brightness to zero and the screen is dimmed to complete black.

The attached patch adds a quirk to ignore the initial _BQC value and set the brightness to max.