I am running elementary os 0.4.1 on my macbook 4.1 (2008). Always when I watch a video on fullscreen in Firefox I cant exit the fullscreen mode after a few minutes. At the beginning it is no problem. No key shortcuts are working. the only option is to shutdown the computer.

Thanks for help!

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    I'm voting to close this question as off-topic because it belongs to another site in the StackExchange network Commented Aug 30, 2017 at 10:04

1 Answer 1


Try the following:
Launch the Terminal from keyboard: Super + T
Use the command: killall firefox

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