daemon fails when detach

[hedmo]

hi . I have a SB3 and trying to use surface-dtx-daemon. here is some info :

for start .

● surface-dtx-daemon.service - Surface Detachment System (DTX) Daemon
Loaded: loaded (/etc/systemd/system/surface-dtx-daemon.service; enabled; preset: disabled)
Active: active (running) since Tue 2026-02-10 18:41:45 CET; 1s ago
Invocation: 51f88d9e94d1488ba11ff9cc427186e2
Docs: https://github.com/linux-surface/surface-dtx-daemon
Main PID: 2112824 (surface-dtx-dae)
Tasks: 2 (limit: 37976)
Memory: 1.1M (peak: 1.7M)
CPU: 4ms
CGroup: /system.slice/surface-dtx-daemon.service
└─2112824 /usr/bin/surface-dtx-daemon --no-log-time

Feb 10 18:41:45 myms systemd[1]: Started Surface Detachment System (DTX) Daemon.
Feb 10 18:41:45 myms surface-dtx-daemon[2112824]: INFO sdtxd: running...
myms /home/hedmo #

and after i detach .

× surface-dtx-daemon.service - Surface Detachment System (DTX) Daemon
Loaded: loaded (/etc/systemd/system/surface-dtx-daemon.service; enabled; preset: disabled)
Active: failed (Result: exit-code) since Tue 2026-02-10 18:41:52 CET; 22s ago
Duration: 6.997s
Invocation: 51f88d9e94d1488ba11ff9cc427186e2
Docs: https://github.com/linux-surface/surface-dtx-daemon
Process: 2112824 ExecStart=/usr/bin/surface-dtx-daemon --no-log-time (code=exited, status=1/FAILURE)
Main PID: 2112824 (code=exited, status=1/FAILURE)
Mem peak: 1.7M
CPU: 5ms

Feb 10 18:41:45 myms systemd[1]: Started Surface Detachment System (DTX) Daemon.
Feb 10 18:41:45 myms surface-dtx-daemon[2112824]: INFO sdtxd: running...
Feb 10 18:41:52 myms surface-dtx-daemon[2112824]: ERROR sdtxd: critical error: Subprocess error (detachment)
Feb 10 18:41:52 myms surface-dtx-daemon[2112824]: Subprocess error (detachment)
Feb 10 18:41:52 myms surface-dtx-daemon[2112824]: Caused by:
Feb 10 18:41:52 myms surface-dtx-daemon[2112824]: Permission denied (os error 13)
Feb 10 18:41:52 myms systemd[1]: surface-dtx-daemon.service: Main process exited, code=exited, status=1/FAILURE
Feb 10 18:41:52 myms systemd[1]: surface-dtx-daemon.service: Failed with result 'exit-code'.

and a snip of journalctl .

Feb 10 18:42:25 myms systemd[1]: Started Surface Detachment System (DTX) Daemon.
Feb 10 18:42:25 myms surface-dtx-daemon[2114092]: INFO sdtxd: running...
Feb 10 18:42:41 myms surface-dtx-daemon[2114092]: ERROR sdtxd: critical error: Subprocess error (detachment)
Feb 10 18:42:41 myms surface-dtx-daemon[2114092]: Subprocess error (detachment)
Feb 10 18:42:41 myms surface-dtx-daemon[2114092]: Caused by:
Feb 10 18:42:41 myms surface-dtx-daemon[2114092]: Permission denied (os error 13)
Feb 10 18:42:41 myms systemd[1]: surface-dtx-daemon.service: Main process exited, code=exited, status=1/FAILURE
Feb 10 18:42:41 myms systemd[1]: surface-dtx-daemon.service: Failed with result 'exit-code'.

regard .