Good news! It's definitely narrowed down to the kernel version as after adding the lines above to my alsa-base.conf sound works (after a couple of reboots). This means that:
vanilla updated jaunty + 2.6.28 kernel = speaker sound doesn't work vanilla updated jaunty + 2.6.29 kernel = speaker sound works
The only problem is that with 2.6.29 my wireless fails. :(
Good news! It's definitely narrowed down to the kernel version as after adding the lines above to my alsa-base.conf sound works (after a couple of reboots). This means that:
vanilla updated jaunty + 2.6.28 kernel = speaker sound doesn't work
vanilla updated jaunty + 2.6.29 kernel = speaker sound works
The only problem is that with 2.6.29 my wireless fails. :(