Ubuntu
linux package

  1. Bug #1138168
  2. Comment #19

Comment 19 for bug 1138168

Revision history for this message
pqwoerituytrueiwoq (pqwoerituytrueiwoq) wrote : Re: Backlight control regression

confirmed in 3.9.0-030900rc5-generic
confirmed in 3.9.0-030900rc6-generic

The kernel boot parameter acpi_osi="!Windows 2012" eliminates the regression
example usage in /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT='quiet splash acpi_osi="!Windows 2012"'