I have a Sage notebook server that runs in a screen session on Ubuntu Server 14.04 (32-bit). When I'm ssh'd to the machine, I can use my notebook in my browser as expected. If I'm not ssh'd to the machine (but notebook server still running in screen session), I can still log in and open my notebook, but when I press SHIFT+ENTER in a compute cell, I get:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "_sage_input_3.py", line 8, in <module>
_interact_.SAGE_CELL_ID=1
NameError: name '_interact_' is not defined
If I then go ssh back into the machine, I close and reopen the notebook (log out from the server is not necessary), and I can use compute cells normally again. I don't even have to be attached to the screen session, just logged in to the host.
I thought the most likely culprit would be related to the eCryptfs of my home dir, so I created /var/sage/sage_notebook.sagenb, but I still get the error*. Currently, the permissions are at 750, but I also tried 777 without success.
The issue is clearly something that's missing when I'm not logged in, but I can't figure out what. The server is a pretty vanilla, ext4 install. Does anyone know what I'm missing?
*Actually, I was getting permission denied errors when the notebook dir was in my home dir and I wasn't logged in. The error shown is what I'm seeing now that I've moved to /var/sage/...
