Screen goes blank after changing sound card

[Baggypants]

It’s probably this permissions issue with cards that are not card0

Audio Setup

The issue was with dbus, I had to change the file /etc/dbus-1/system-local.conf to <policy user="root"> <allow own="org.freedesktop.ReserveDevice1.Audio1"/> </policy> Because even though it was the only card it insists on being card1 not card0. Also the mixer doesn’t appear in the webconf, I presume that’s more to do with the fact you have to launch alsamixer -c1 to view it. Edit to note: It worked before so it must have been card0 at some point.