I have just installed 13.10 64 bit on a gaming PC. I had it working fine using the default "gallium" display drivers and Portal worked fine from steam... but Minecraft was very slow so I went in search of some more specific gfx drivers... there are none at all available for this card - the manufacturer doesn't even seem to want to admit to having manufactured it! But it's basically a radeon HD4870 x2
...so I downloaded:
I first ran this from a terminal session and got errors relating to a device still in use.
I then ran it after exiting from the lightDM and got a little further but the error log reported the following header file as missing:
(I checked, the directory is correct by that header is not there)
Now, I cannot log in to the GUI - it draws the desktop background and the login menu - but when I put my password in, the screen flickers and returns me to the login menu.
This is similar to an error here:
BUT the solution suggested does not work for me.
Any help on how to proceed would be great. If not, I would just like to restore the default drivers. Thanks.