I just read that from /usr/share/doc/alsa-base/README.Debian. Maybe that could help.
reloading modules across APM suspend-and-resume ----------------------------------------------- During suspension many peripherals are switched off; on resuming the machine these peripherals need to be re-initialized. Many ALSA drivers do this properly but some still do not. ... -- Only headphones work after suspend on HP nx8220 https://launchpad.net/bugs/21574 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs