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. -- Dim on idle/battery does not work on Dell laptop https://bugs.launchpad.net/bugs/201433 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs