Reuben Thomas wrote:
Package: xbacklight
Severity: normal
xbacklight -set sometimes has no effect. For example, when I suspend and
resume my laptop, the backlight is reset to 100%, but is still reported
as whatever I set it to before. xbacklight seems to do nothing if I try
to set it to the same value; instead, I must first set it to a different
value.
It may be a bug in the driver. If the driver doesn't reset its backlight
value on suspend/resume, xbacklight will read a wrong value from it, and
thus do nothing if the set the same value.
Did you actually ever observe the bug when not resuming from suspend?