Comment 6 for bug 392812
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| Andrew Chadwick (achadwick) wrote Re: No change display brightness | #6 |
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(Get the code!)
Other symptoms of this bug when it kicks in: wireless toggle (radio tower multimedia key on F2) and reporting of the close state of the lid to the OS seem broken too (so I can't suspend on lid closure after turning it on; annoying to me). System also appears to think the system is on AC power when it's on battery, although g-p-m's applet notices the change in battery charge level after a few tens of seconds and displays an icon (though still reporting "on AC").
Under intrepid, after this bug has kicked in, pressing the brightness mm keys results in a B&W notify OSD box as usual, but the bar does not move and backlight brightness does not change. Something's being detected, but not fully. Note that wifi itself continues working, and it's still possible to suspend and hibernate correctly via the power button dialog [so ACPI powerbutton still works] even in a period after this bug has kicked in.