I use muse4 on fedora 39, and they have just updated to kernel 6.6.2.
something has changed that means journalctl shows issues with permissions on the /dev/rtc0 device and as a result
muse is not able to start jack audio.
the error recorded from journalctl is as follows
plasmashell[5332]: precise timer not available, check file permissions and allowed RTC freq (/sys/class/rtc/rtc0/max_user_freq)
musicbox plasmashell[5332]: Trying ALSA timer...
plasmashell[5332]: AlsaTimer::initTimer(): best available ALSA timer: system timer
plasmashell[5332]: got timer = 26
reverting to previous kernel fixed issue ie 6.5.12
i also tried latest appimage just in case but same.
some old advise of echoing 3072 into the above device file and also
cat /etc/sysctl.d/50-muse4.conf
dev.hpet.max-user-freq=3072
does not help either
muse still works ok if i start it with -t, but terrible latency that way....
regards peter