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I have configured & installed CUDA twice already, both from completely fresh installs of 14.04.3 LTS (worth noting the machine dual-boots Windows 10 [separate drives though]). Both times, after a couple days of running fine it will get me stuck in a login loop. I tried chown username:username on the .Xauthority, modifying /tmp, reconfiguring lightdm (From Here). However, nothing seems to work.

For reference I installed both the nVidia driver and CUDA via runfile method. I will update with the distros after I reboot into my linux box to check.

NVIDIA Linux 64bit 352.41

CUDA 7.5

Community
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asdf
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2 Answers2

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I have found that installing the cuda driver without opengl helps, provided you only want the GPU for compute. This is done by adding either --no-opengl-libs (or --no-opengl-files) during the run file install.

Paul Mullowney
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I also encounter the same problem. So I switch to TTY (Ctrl+Alt+F1) and created a new user and found out that I can login using the new user. Then I realize that if I use the new user's $HOME/.profile, I can login too. Finally, the problem lies in the $HOME/.profile, the troublesome line is: 

LD_LIBRARY_PATH=\*/cuda\*:\*/nvidia\*:$LD_LIBRARY_PATH

It turns out that if your current graphics card is not compatible with the Nvidia driver or CUDA library, desktop login will crash the X session. It seems like a bug in the gnome-session.

Your case might be different though.

My problem is solved now -:)

Mostafa Ahangarha
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xuancong84
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