Ubuntu
nvidia-graphics-drivers-313-updates package

  1. Bug #1190341
  2. Comment #13

Comment 13 for bug 1190341

Revision history for this message
Bruno Beaufils (beaufils) wrote :

Nothing changes with any of the boot parameters you asked me to try, separately.

I tried thoses parameters only with the current stable ubuntu kernel (3.11.0-15-generic). I also tried, separately, to set i915.modeset=1 with no more luck.

The current boot parameters are these one :

quiet i915.lvds_channel_mode=2 i915.modeset=0 i915.lvds_use_ssc=0 splash acpi_osi=

BTW, I use nvidia binary Xorg driver (nvidia-319-updates).

My only workaround to date is to boot with the old kernel (3.8.0-22.23), put the laptop in sleep mode once, wake it up and then I got backlight control working.