[Jackaudio] Running JACK from WSL2

Greetings! I realise this may be considered a form of heresy, but I am attempting to get jack running with a dummy backend on Ubuntu 18.04 under windows subsystem for linux 2 (WSL2). Remarkably this does actually work. However, only if I execute jack as root (i.e. using sudo) can it obtain permissions for real-time scheduling, which is not ideal. I think I have all the normal Ubuntu settings in place but don’t know what differences might exist between normal Ubuntu and the version that exists with WSL2. The output of running realtimeconfigquickscan is pasted below, Does anyone have any pointers of where to look? Many thanks, Alastair P.S. Apologies if this or something like it has been discussed before. Is there a way to search the archives of this list that I am missing? $ perl ./realTimeConfigQuickScan.pl == GUI-enabled checks == Checking if you are root... no - good Checking filesystem 'noatime' parameter... 4.19.104 kernel - good (relatime is default since 2.6.30) cat: /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor: No such file or directory cat: /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor: No such file or directory cat: /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor: No such file or directory cat: /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor: No such file or directory cat: /sys/devices/system/cpu/cpu4/cpufreq/scaling_governor: No such file or directory cat: /sys/devices/system/cpu/cpu5/cpufreq/scaling_governor: No such file or directory cat: /sys/devices/system/cpu/cpu6/cpufreq/scaling_governor: No such file or directory cat: /sys/devices/system/cpu/cpu7/cpufreq/scaling_governor: No such file or directory Checking CPU Governors... CPU 0: '' CPU 1: '' CPU 2: '' CPU 3: '' CPU 4: '' CPU 5: '' CPU 6: '' CPU 7: '' - not good Set CPU Governors to 'performance' with 'cpupower frequency-set -g performance' or 'cpufreq-set -c <cpunr> -g performance' (Debian/Ubuntu) See also: http://linuxmusicians.com/viewtopic.php?f=27&t=844 Checking swappiness... 60 - not good ** vm.swappiness is larger than 10 Set swappiness by adding 'vm.swappiness=10' to /etc/sysctl.conf and rebooting Checking for resource-intensive background processes... none found - good Checking checking sysctl inotify max_user_watches... >= 524288 - good Checking access to the high precision event timer... not found - not good /dev/hpet not found. Checking access to the real-time clock... not found - not good /dev/rtc not found (perhaps create a symlink?). Checking whether you're in the 'audio' group... yes - good Checking for multiple 'audio' groups... no - good chrt: failed to set pid 0's policy: Operation not permitted Checking the ability to prioritize processes with chrt... no - not good Could not assign a 80 rtprio SCHED_FIFO value. Set up limits.conf. For more information, see http://wiki.linuxaudio.org/wiki/system_configuration#limitsconfaudioconf Checking kernel support for high resolution timers... found - good Kernel with Real-Time Preemption... not found - not good Kernel without 'threadirqs' parameter or real-time capabilities found For more information, see https://wiki.linuxaudio.org/wiki/system_configuration#do_i_really_need_a_re… Checking if kernel system timer is high-resolution... found - good Checking kernel support for tickless timer... found - good == Other checks == Checking filesystem types... ok. ** Set $SOUND_CARD_IRQ to the IRQ of your soundcard to enable more checks. Find your sound card's IRQ by looking at '/proc/interrupts' and lspci.