up vote 3 down vote favorite

i have notebook and additional monitor. Sometimes, not each time(even not each day), i have problem: when i'm leaving my place i'm using win+L to lock screen. When i'm coming back i cant input login and password because there are no fields. They are just disappeared.

How can i catch it, notify ubuntu dev team and fix it ?

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What desktop environment are you using, with what Ubuntu version - and could you add a photo of the issue please (you can use a link to imgur.com) – Wilf Jul 2 '15 at 16:37
    
Does CTRL+ALT+f1 give you a text mode login prompt? (might be necessary to press ENTER at least once at times) If it does then CTRL+ALT+f7 should bring the GUI back. By login via the text mode prompt you should be able to analyse what has happened. For starters try dmsg | less +ENTER – Hannu Jul 2 '15 at 20:07
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@Wilf , Linux b10s 3.13.0-57-generic #95-Ubuntu SMP Fri Jun 19 09:28:15 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux and Unity What about photo is hard to do only by phone :) but i'll try next time. @Hannu, yes, CTRL+ALT+F1 gives me text mode and CTRL+ALT+F7 brings me back without any help. I'll try to use dmsg | less next time, thanks. – b10s Jul 16 '15 at 15:40
up vote 0 down vote

I have this problem as well, and have found that pressing ESC and then moving my mouse fixes the problem.

It only seemed to start happening after I got an additional monitor.

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