I installed LinuxICE and my Silverstone EB01 DAC was not working.
I did this to fix it:
Open a terminal and do the following: "cat /proc/asound/modules"
You will get a list of items. One should be the onboard audio(had VIA in the name). Write down the name.
Then, type "sudo nano /etc/modprobe.d/blacklist.conf"
You can use the keyboard to navigate and add the world blacklist followed by the name of the onboard audio you retrieved above. Press CTRL+X, then Y, then ENTER to save.