Ubuntu
linux package

  1. Bug #1197482
  2. Comment #34

Comment 34 for bug 1197482

Revision history for this message
Yuan Chao (yuanchao) wrote : Re: 8086:0a26 [MacBook Air 6,2] After suspend/resume, screen is dark for brighness levels below 13 with i915 driver

There are actually two problems:
1) backlight and keyboard light are turn on fully at boot time w/o respecting the original settings. I found the same problem even in single user mode. Turning off KMS with "nomodeset" in grub will preseve the brightness level, but X will go into error.

2) screen backlight becomes only fully on or fully off after suspend as descibed in this bug. This affects 12.04.3, 12.04.4 and 13.10 as I've tried.