PSM is Enabled by default which shutsdown the modem

[akankshaashwini]

With MCU version 002.011 PSM is enabled by default which shutsdown the modem after ~40 minutes:
root@swi-mdm9x28-wp:/data/psm# cat ./psm_nv_backup.txt
PSM_ENABLED=1
PSM_THRESHOLD=60
PSM_OOS_DURATION=86400
PSM_RANDOMIZATION_WINDOW=5
PSM_PERIODIC_TAU_TIMER=11520
PSM_PERIODIC_TAU_RCVD_TIME=2936
PSM_APP_ACTIVE_TIME=0
PSM_BOOTUP_DELAY=3

Logs from the console:
Aug 5 15:42:41 swi-mdm9x28-wp user.warn kernel: [ 2933.713140] PSM: Supported: 1
Aug 5 15:42:41 swi-mdm9x28-wp user.warn kernel: [ 2933.713298] PSM: Auto ready rcvd, tau timer: 11520
Aug 5 15:42:41 swi-mdm9x28-wp user.warn kernel: [ 2933.713620] PSM: backup_nv_path /data/psm/psm_nv_backup.txt
Aug 5 15:42:41 swi-mdm9x28-wp user.warn kernel: [ 2933.726941] PSM: Sent enter req. Waiting for modem Complete indication.
Aug 5 15:42:41 swi-mdm9x28-wp user.warn kernel: [ 2933.986883] PSM: Supported: 1
Aug 5 15:42:41 swi-mdm9x28-wp user.warn kernel: [ 2933.986993] PSM: Ready for shutdown

---

Checked with a previous MCU version 002.009 and found it to be disabled:
root@swi-mdm9x28-wp:~# cat /data/psm/psm_nv_backup.txt
PSM_ENABLED=0
PSM_THRESHOLD=0
PSM_OOS_DURATION=0
PSM_RANDOMIZATION_WINDOW=0
PSM_PERIODIC_TAU_TIMER=0
PSM_PERIODIC_TAU_RCVD_TIME=0
PSM_APP_ACTIVE_TIME=0
PSM_BOOTUP_DELAY=-1

[Redferne]

It is possible to disable PSM directly on the modem using:

root@swi-mdm9x28-wp:~# microcom /dev/ttyAT
at+cpsms=0
OK

Exit microcom by CTRL+a and then CTRL+x

[vondraussen]

Good point, we could probably reconfigure it via AT. However we need PSM, so deactivating it wouldn't help us much.
We're switching back to 19.02. which works for us.

It's still an issue that it is activated by default.