"Software Rendering Mode"?

[decadence18]

After a messed up line in the terminal I deleted the /tmp directory. It wouldn't let me log in so I had to delete the .Xauthority file, the /.cache/dconf directory, and change the permissions on the /tmp directory. Now when I log in (LM17 Cinnamon) it displays a notification saying "Cinnamon running in software rendering mode". Anyone have any ideas on how to fix this?

I'm using Linux Mint 17 x64 Cinnamon. If anyone needs any other information on my system please ask.

[austin.texas]

I don't know the "proper" way to fix the various things you have done, but I believe you can correct everything fairly easily by re-installing LM17 to the same partitions WITHOUT FORMATTING the partitions. That should re-configure what needs to be fixed, and still preserve your personal config (except maybe your ppa's, if you have any.)
Run the command:

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inxi -r >> ~/softwaresources.txt

before re-installing, and you will have a text file listing your ppa's to refer to, so that you can re-create them, if necessary.

Were you using a special graphics driver, or just the default?

[JeremyB]

In addition to austin.texas' idea see what this command brings up

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cat /var/log/Xorg.0.log | grep fail