I have the same problem in feisty, in a sony vaio laptop: VGN-FE31H. The keys used to work OK, but some update about 2 weeks ago broke their functionality.
When I press any of the OSD info appears, but the bar is empty, and does not increase.
I can change the volume in sound volume applet.
Mute key works fine.
Sound card is an "Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)"
I have the same problem in feisty, in a sony vaio laptop: VGN-FE31H. The keys used to work OK, but some update about 2 weeks ago broke their functionality.
When I press any of the OSD info appears, but the bar is empty, and does not increase.
I can change the volume in sound volume applet.
Mute key works fine.
Sound card is an "Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)"