Bug#537599: gnome-power-manager: Brightness incorrectly reported as 100% on Thinkpad X200T

[Sam Morris]

Would you mind checking that any BIOS options for dimming the screen
when on battery power are disabled?

I have seen laptops (mine, for instance) that dim the screen when on
battery, but in hardware--as far as the OS is concerned it's still at
100% even though the screen is very dim.

Of course, plugging the laptop back in should cause it to go back to
100%--but maybe your machine didn't notice since you restored AC power
during hibernation...

-- 
Sam Morris
https://robots.org.uk/

PGP key id 1024D/5EA01078
3412 EA18 1277 354B 991B  C869 B219 7FDB 5EA0 1078
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