The question will seem repeated at first, but let me explain why it is not.
I have an HP pavilion dv6, with an intel Centrino 2 processor, ARI Radeon graphics card. So I recently updated my 64-bit Ubuntu 13.04 to 13.10. I was welcomed by a black screen. I followed answers to other questions on askubuntu, now it starts by showing
"Your screen,graphics card,and input device settings could not be detected correctly.You will need to configure these yourself."
I tried downloading a new driver from ATI.com like http://www2.ati.com/drivers/beta/amd-catalyst-13.11-beta-v9.4-linux-x86.x86_64.run.zip, for some reason the extraction always fails.
FailsafeX never actually does anything, it prints a single line then halts. I tried reinstalling fglrx, ubuntu-desktop, gdm and a lot more packages.. Basically I tried all the approaches mentioned here How to fix "The system is running in low-graphics mode" error? but none worked
I have no clue what to do now, I don't want to reinstall ubuntu to avoid many software reinstallations and configuration.