Ubuntu
gnome-control-center package

  1. Bug #1966178
  2. Comment #1

Comment 1 for bug 1966178

Revision history for this message
Bin Li (binli) wrote (last edit ):

Cause the 5.15.0-23-generic couldn't support it, I used 5.17 mainline kernel.

$ cat /proc/acpi/ibm/lcdshadow
status: 0
commands: 0, 1

And after press the Fn + D, the screen display angle changed, and the content of /proc/acpi/ibm/lcdshadow is changed, and the GUI of 'Restrict Viewing Angle' is synced between on and off. But we could control from 'Restrict Viewing Angle' in g-c-c.

Here is the bug for kernel.
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1966061