I have a laptop running Lubuntu. When I leave it for about 10-20 minutes, the screen auto-locks. I can unlock it the first time, but I can not unlock it after that. Instead, I need to force reboot the PC. I have disabled all power management, so the screen should stay on and unlocked at all times.

How can I fix this?


I had a similar problem, lock-screen every 10minutes. I always managed to log back in though.

In my case, I had to set to "off" the light locker option in the Preferences > light locker settings

Hopefully it will fix the lockscreen. About the other issue, which error do you get? In which way you can't log back?

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