Comment 1 for bug 371236

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Frederick J. Henderson (frederickjh) wrote :

I also had this issue. I recently installed Ubuntu 14.04.4 using LVM. /tmp was on its own logical volume.

I am using this computer as as LTSP server. When the client image is built it used the permissions of /tmp prior to being mounted drwxr-xr-x (755). /tmp should have a permission of drwxrwxrwt (1777) even if it gets mounted over.

This wrong permission allowed the LTSP clients to boot but after a successful login, the client would never see the desktop but were sent back to the login screen. Changing the permissions of the client /tmp to 1777 fixed this issue.