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After upgrading Ubuntu from 16.10 to 17.04 on my work PC, a very strange problem is causing havoc. When I turn on my PC, everything is normal. But after Locking Computer with Ctrl+L or locking from power option, my desktop screen turns totally black, and I can just see mouse pointer. I am unable to wake computer up. I can't do anything except just restarting it.

Immediate help needed.

  • Are you able to switch to ttys?it's still black? if not black, try run this unity --reset and get back from tty to gui if your desktop back or not, if yes, ping me; to @Dovah-king, or maybe you set configuration to suspend or sleep when lock in system configuration, check the one also – αғsнιη Aug 4 '17 at 20:28

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