ran alsamixer i get: function snd_ctl_open failed for default : no such file or directory
The typic information when the ALSA driver can't be loaded correctly.
I do not know exactly the cause but in DSL Installation to Hard Disk something is not reset totally for to load the ALSA modules. Such reset would have to do it the "alsa" boot option written in the Boot Loader Configuration file.
However when the DSL boot from Live CD, the "dsl alsa" option works fine in that sense although the system anyway can fail to assign resources correctly.
I installed ALSA because OSS not worked then i had still more problems: The DSL loaded ALSA together OSS modules and the boot option changed nothing that. I ran the sndconfig utility and I observed that the utility can reset correctly any previous audio configuration. However if utility fails to configure automatically then pass to manual configuration without reset your previous automatic configuration. Then the manual configuration too fails, still if resource assignments was corrects. However if running the utility with the option --noprobe then pass directly to manual configuration resetting correctly any other configuration. Thus I found the correct resource assignments for the driver but that is lost when the computer reboot.
After DSL boot, I removed manually all from the sound modules and i tried to reload manually the modules OSS with the correct resource assignments for the driver and it worked. I wrote all from that commands to /opt/bootlocal.sh file. Thus DSL boot with that configuration and the problem was solved.
original here.