search

falkTX / Cadence

Collection of tools useful for audio production
GNU General Public License v2.0
370 stars 80 forks source link

failed to start jack when different user login in Manjaro KDE 21.1.2 #331

Closed rafidalhaque closed 3 years ago

rafidalhaque commented 3 years ago

When I login with a different user credential, and going to start jack with cadence. It shows me a error message that,

failed to start jack, please check the logs for more information.

and the log is here:

Sun Sep  5 13:43:45 2021: Starting jack server...
Sun Sep  5 13:43:45 2021: JACK server starting in realtime mode with priority 10
Sun Sep  5 13:43:45 2021: self-connect-mode is "Don't restrict self connect requests"
Sun Sep  5 13:43:45 2021: ERROR: Cannot lock down 107341340 byte memory area (Cannot allocate memory)
Sun Sep  5 13:43:45 2021: ERROR: Cannot open DB environment: Permission denied
Sun Sep  5 13:43:45 2021: Acquired audio card Audio0
Sun Sep  5 13:43:45 2021: creating alsa driver ... hw:PCH,0|hw:PCH,0|1024|2|48000|0|0|nomon|swmeter|-|32bit
Sun Sep  5 13:43:45 2021: ERROR: 

ATTENTION: The playback device "hw:PCH,0" is already in use. Please stop the application using it and run JACK again
Sun Sep  5 13:43:45 2021: ERROR: Cannot open DB environment: Permission denied
Sun Sep  5 13:43:45 2021: Released audio card Audio0
Sun Sep  5 13:43:45 2021: ERROR: Cannot initialize driver
Sun Sep  5 13:43:45 2021: ERROR: JackServer::Open failed with -1
Sun Sep  5 13:43:45 2021: ERROR: Failed to open server

System information:

OS: Manjaro Linux x86_64 Host: H310M S2H 2.0 Kernel: 5.13.13-1-MANJARO CPU: Intel i3-8100 (4) @ 3.600GHz GPU: Intel CoffeeLake-S GT2 [UHD Graphics 630]

How can i solve this problem, please?

falkTX commented 3 years ago

This is not supported in Cadence, using jack with the same audio card for multiple users. There is a special way to allow jack to work on such setups, but I never tried it myself and do not even know if it still works. If you need something to keep researching, this is called "promiscuous mode". Still unsupported in Cadence though.