[ltp] Re: T61 stuck at half brightness if booted on battery power

[Stefan Monnier]

> 100% screen brightness and no dimming while on battery power.

> The slider in g-p-m lets me adjust the brightness the same way as
> xbacklight on the console: form black (0%) to dim (100%).  Those
> settings are also reflected in xrandr properties as numbers from 0 to
> 23640.

> I rebooted with AC plugged in, went into the BIOS, checked the backlight
> setting, used Fn+Home to make the screen bright again, booted Ubuntu.
> Now the xbacklight range is twice as wide.  xrandr --properties still
> shows the same range numbers (0,23640).

After booting on battery, what happens if you hibernate and then resume
on AC?


        Stefan