xlock process freezes on a terminal

xlock process freezes on a terminal

[MDAS terminals(sbt* & alt*)]

The xlock process sometimes freezes on a terminal.
If you encounter this issue, please try the following steps.

[How to kill the frozen xlock process]

1. Press "Ctrl + Alt + F2" key to switch the virtual console.
2. Log in with your account name and your password.
3. Execute "ps -aux | grep xlock" and find the PID of the xlock.
4. Execute "kill -9 <PID_of_xlock>".
5. "exit" to logout from the terminal.
6. Press "Ctrl + Alt + F1" to return to the original virtual console. The xlock process should have been killed.