On Wed, 24 Jan 2024 at 16:55, Chris Caudle <chris@xxxxxxxxxxxxxxx> wrote: > On Jan 24 2024, at 3:33 am, Jeremy Jongepier <jeremy@xxxxxxxxxxxxxx> wrote: > Maybe it's related to Real-Time group scheduling, see > https://www.kernel.org/doc/Documentation/scheduler/sched-rt-group.txt > > That certainly seems like a good possibility to investigate. > This note is on that document page you referenced: > > Realtime group scheduling means you have to assign a portion of total CPU > bandwidth to the group before it will accept realtime tasks. Therefore you will > not be able to run realtime tasks as any user other than root until you have > done that, even if the user has the rights to run processes with realtime > priority! That was it! Setting sched_rt_runtime_us to -1 allowed qjackctl to start jack, and ardour seemed to start normally, thanks Jeremy! Chris/Jeremy, reading the link, my previous values for the two sched_rt_* settings in proc were the default values, but to make it work I would have to "allocate realtime bandwidth" to the audio group I think? Is it just as well to disable CONFIG_RT_GROUP_SCHED in my kernel? Or is the change in /proc I did now permanent? Thanks again! Arve _______________________________________________ Linux-audio-user mailing list -- linux-audio-user@xxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to linux-audio-user-leave@xxxxxxxxxxxxxxxxxxxx
