PR Submitted
Since copy/pasting patches to dom0 is a little bit hard, it might easier for you to do the patch manually. I submitted a smaller patch and you could apply it easily. Open the qubes-dom0-update
script in dom0 with your favourite text editor (vim, nano, …) as root:
sudo vim /usr/bin/qubes-dom0-update
Go to line ~203 which should look like this (it might be few lines before or after line 203 in your machine):
if [[ ${?} -ne 0 ]]; then
echo "Another instance of qubes-dom0-update is already running!"
exit 1
fi
And change it to
if [[ ${?} -ne 0 ]] && [[ ! $SWITCHING_AUDIO_IN_PROGRESS ]]; then
........
Optional: Backup qubes-dom0-update
before patching
p.s.: I included few lines after the condition to help you find it easily. Do not delete them. Only one line has to be patched (the if condition)