> > > What does muse -R do? > > > > Runs it in realtime, if you're not connected via Jackd. > > Right. MusE does not run /well/ if it does not have access to rtc and realtime > capabilities. Timing will be off. > Yes.. I had found this before, but I _think_ when you build muse with rtcap, it automatically uses realtime. The -R option is a bit unclear. For example, in my system when running muse (without jack), it does not start, I get: no locale <muse_en_GB>/</usr/local/share/muse/locale> no JACK audio server found ALSA: samplerate 44100 not available, using 48000 WARNING: Cannot lock memory:: Operation not permitted WARNING: Cannot lock memory:: Operation not permitted cannot set tick on /dev/rtc: Permission denied precise timer not available (muse was compiled for jack though, and with rtcap support). when I run it with jack running, it starts fine: no locale <muse_en_GB>/</usr/local/share/muse/locale> JACK: sample rate changed: 44100 Also timing seems fine (as long as I have given the kernel option sysctl -w dev.rtc.max-user-freq=1024)... When I try to run it connected to jack with the -R startup option, it does not start and gives me the error: no locale <muse_en_GB>/</usr/local/share/muse/locale> JACK: sample rate changed: 44100 creating watchdog thread failed:: Invalid argument creating thread failed:: Illegal seek My question is: do I need to start muse with the -R option, and what does it do? James