X.Org X server

  1. Bug #1244645
  2. Comment #12

Comment 12 for bug 1244645

Revision history for this message
penalvch (penalvch) wrote : Re: Brightness is at 100 percent and will not change

Jack Ramsay, thank you for performing the requested test. Could you please advise if any of the following kernel parameters individually provide a WORKAROUND following https://help.ubuntu.com/community/BootOptions :
acpi_backlight=vendor
video.use_bios_initial_backlight=0
thinkpad-acpi.brightness_enable=1