Confirmed, I have this problem too. If my TV card was not used since last reboot it's something static noise (which is even more annoying) otherwise it's the sound of the channel I've set up before in a TV application. It's in bug report #199883 . I've also have this problem when I change users with user switch applet.
** Changed in: alsaplayer (Ubuntu) Status: New => Confirmed -- TV capture card sound when logging in https://bugs.launchpad.net/bugs/239122 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