I added libsmbios to this bug because I think it is caused there. I
recompiled the source with debug output enabled (apt-get source &
debuild). I cannot set the brightness with the tools in libsmbios-bin
either. Results are as above and I noted two other things: When trying
to set the AC mode brightness I get an error (see below) and when a
password (system and/or user) is set in the bios this is not detected
while it should display an error and try again with a password.
sudo dellLcdBrightness -a -v 6
Read AC Mode Setting
args are : 0x0 0x0 0x0 0x0
res was : 0x0 0x7 0x0 0x7
current: 7
min: 0
max: 7
Write AC Mode Setting
Try #0 for writeSetting()
args are : 0x0 0x6 0x0 0x0
An Error occurred. The Error message is:
Unsupported SMI call.
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Dim on idle/battery does not work on Dell laptop
https://bugs.launchpad.net/bugs/201433
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