Without another system with similar hardware it's uncertain if it's a problem with drivers or with software. Since I've seen no other mention of a problem like this I would guess that it has something to do with a software setting, software bug, or driver (it could be PEBKAC).
Please see this bug for additional sound property details, since this may be related. https://bugs.launchpad.net/ubuntu/+source/gstreamer0.10/+bug/367722 Here are the steps I took to discover this problem: 1) upgrade from 8.10 to 9.04 2) make sure only 1 speaker system is plugged into the front speaker (green) jack (not the one in the front of the desktop, if there's one there) 3) open hulu.com, youtube, VLC, or MPlayer on a video file to verify proper sound and volume 4) open same AVI video file with Totem. Notice volume button grayed out and no sound. It seems as though Totem is not reading the sound settings properly, from my best guess. I can help more later by providing dmesg and other logs. System details: Sound - HDA ATI SB ALC1200 Analog (ALSA) onboard sound Video - ATI HD3200 onboard Processor - AMD Phenom x4 -- Volume control and sound missing from Totem. All other video/music players work fine. https://bugs.launchpad.net/bugs/367718 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