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I am running Ubuntu 14.04 64bit on my Dell XPS 13 laptop, and up until now I was able to start nautilus via terminal or by using ALT+F2 and typing gksu nautilus through Dash. Only now, supposedly after I upgraded the system via update manager where unity package got updated, I cannot do it anymore. When trying to launch it via ALT+F2 I can see a cogwheel moving instead of a cursor, and if I do it with terminal gksu nautilus it shows me this

gksu nautilus
** (gksu:6420): CRITICAL **: fcntl error
** (gksu:6420): WARNING **: Lock taken by pid: -1. Exiting.

if I launch it with sudo command, everything works as expected.

The question is, is it a bug (which means I will report it immediately), or is it a known issue and there is a workaround I can try already?

Thanks!

Nikki Kononov
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    gksu has been depreciated, see http://askubuntu.com/questions/284306/why-is-gksu-no-longer-installed-by-default for a discussion. I am not sure where that leaves you. You can try filing a bug report, but I suspect it will be closed as "won't fix" – Panther Apr 29 '14 at 21:02

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Try to do rm ~/.gksu.lock it's safe to remove that file, it will be recreated when you be successful at doing gksu again.

Leon Alvarez
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