It's not specific to rhythmbox. I also tried doing a suspend and resume while playing mp3's with totem and with the "play" command. Both triggered the problem.
Another interesting detail is that whenever the problem occurs there's also a very soft digital "click" between 2 and 3 times a second, which is absent normally. (And lspci identifies the video card as an Intel "Mobile GM965/GL960". I think (I may have forgotten) that was the only option with this model.) For the sound it says: 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 02) -- volume increases uncontrollably on Dell 1420n https://bugs.launchpad.net/bugs/173942 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
