Comment 20 for bug 536699

I've been experiencing a slightly similar problem on my Toshiba Satellite U305 that I think may be related. Sound no longer works, and after boot, KDE reports that the sound device has been removed, and asks if I want KDE to forget about the device. This problem originally started when I was on 9.10. It would turn up about once a month, and then the next morning, it would be fine, so I passed it off as just a hardware problem. It continued happening after updating to 10.04 during the beta period, and now it is back, and it appears to be here to stay. Attached is my /var/log/syslog, which shows numerous "spurious response" messages. Adding "options snd-hda-intel position_fix=1" to /etc/modprobe.d/alsa-base.conf" as suggested above does not resolve the problem. I've also included my /etc/modprobe.d/alsa-base.conf, as I recall having to add something in the past to get something working properly (but I don't recall what was added).