Notebook hangs on evaluation. CLI works fine.

[Thomas]

I just installed 64-bit LinuxMint 17 (based on Ubuntu 14.04). I started by downloading the sage-6.3-x96_64-Linux binaries, and when I run sage, I can use the command-line just fine (using the example 1+1, and it returning 2). After running "notebook()", the browser window opens, I start a new worksheet, and when I try entering 1+1 and pressing Shift-Enter (or clicking Evaluate), it acts like it's computing (title bar is animated with alternating '/' and '\', and there's a green bar just below the execution block), but it never returns the answer "2".

I went a step further and compiled sage from the sage-6.3 source code, and I have the same issue. CLI works fine, but the notebook won't execute anything. Searching for similar notebook hangups, I couldn't find anything matching the problem that I'm having.

I'm happy to provide any additional information, but no errors show up in the terminal where I'm running "sage: notebook()", except a warning about rebuilding with libgmp >= 5 to avoid a timing attack vulnerability. Any help is greatly appreciated. This has been racking my brain for the last couple days.

[Thomas]

Sorry, just noticed that I was supposed to add CPU information.

Intel(R) Core(TM) i5-3230M CPU @ 2.60GHz