Ok, I apologise for not reading the most recent messages here (default view only shows the first couple) but I can confirm that uninstalling sl-modem-daemon (which Ubuntu's proprietary driver utility installed for me way in the beginning) resolves the issue for me. I can now reboot and still have my sound working as it should without having to force an alsa reload.
In essence this is a bug then for sl-modem-daemon and not audio, pulseaudio, alsa, gnome, linux kernel or anything else. -- [karmic] No sound on Intel 82801H HD Audio https://bugs.launchpad.net/bugs/411574 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
