Hi, I'm hoping that I can get some help solving the screen rotation for my tablet 2740p.
I found a link that supposely had solve the issue and maybe it did on another version of Ubuntu, but it didn't work for me. Here is the link:
http://ubuntuforums.org/showthread.php?t=1588382

So I attempted using the instructions specified in the post (link is above). Here are the steps I followed:

1. sudo add-apt-repository ppa:thjaeger/tabletpc
2. sudo apt-get update
On step 2, it failed to perform the update. Here is what I got:

W: Failed to fetch http://ppa.launchpad.net/thjaeger/ta...amd64/Packages 404 Not Found

W: Failed to fetch http://ppa.launchpad.net/thjaeger/ta...-i386/Packages 404 Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.

so I went to the site thjaeger and downloaded the .deb package for wacomrotate. Here is the link:
https://launchpad.net/~thjaeger/+arc...+build/3884071

I manually installed the .deb package, but nothing is working. I restarted the computer and still no auto detection when I rotate the screen.

Any ideas?
Thank you in advance.

Computer: HP 2740P
OS: Ubuntu 14.04 64bit