The new BIOS did not resolve the issue, however creating
/usr/share/X11/xorg.conf.d/80-backlight.conf
with the contents:
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "AccelMethod" "sna"
Option "Backlight" "intel_backlight" # use your backlight that works here
BusID "PCI:0:2:0"
EndSection
works to workaround it.
$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
44CN43WW
10/27/2011
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1388636
Title:
[Lenovo V570 Notebook] Brightness not changing via UI widget in GNOME
shell or hotkeys
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1388636/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
