Make Thumbnail Cache more user friendly

[Robert42]

As you can see on Askubuntu, the message A problem has been detected with your thumbnail cache. Fixing it will require administrative privileges.
is making users thinking, whether their system is compromised.

The following line is the line with the ambivalent message.

nemo/src/nemo-thumbnail-problem-bar.c

Line 62 in 3732821

g_spawn_command_line_sync ("sh -c \"pkexec nemo --fix-cache\"", NULL, NULL, NULL, NULL);

One possible fix would be do adding an Info Button explaining what is done and which terminal (in this case sudo nemo --fix-cache) command can be typed in manually, if you don't trust the ui.

[alexanderdd]

The original problem should be fixed (thumbnails need to be generated correctly), not this info bar.
See https://bugs.launchpad.net/linuxmint/+bug/1592293

[Robert42]

I agree, that the original problem should have a higher priority. It's also what would improve the user experience for me personally.

But: An info bar causing a user to think his system was corrupted by a virus and adding motivation for him to change the distribution is worth a second look, isn't it? ;)