I have had this problem with my Averatec 3715-EH1 Laptop. Using both Ubuntu 5.10 and only recently in 6.06 (LTS). I don't use hibernate or suspend (largely because if this bug) and seldom 'reboot.' It is usually just a shutdown/restart. My initial 5.10 install was dual-boot with windows, and a reboot into, and log out of Windows would fix it with an audible tick or pop.
Installed 6.06(LTS) from the CD replacing the 5.10 install (due to a failed windows upgrade mucking up the MBR), and had it set up to dual- boot for a while too, but did not experience the problem so I wiped the Windows install and installed 6.06 (LTS) as the only OS and it worked well for near 2 weeks and recently the problem has resurfaced. I have checked the alsamixer settings and recently installed the latest kernel package for the k7 in an attempt to fix it. My next steps were going to be roll a custom kernel to see if perhaps there were some driver conflicts, OR reinstall via the same CD and do the upgrades/updates and see what might possibly be breaking it there. I think it is important to note that I had near a month of use without problem from the 6.06 (LTS) install. It only returned early this week (near 8/270/06). Also that again I don't use hbernate/suspend. Lastly I'm not convinced it might be the power management somehow. I really think it quits working while the machine is still 'on' sometimes. -- sound doesn't work (via 8233/ac97) https://launchpad.net/bugs/6032 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs