I have tried to use fglrx proprietary driver for ATI Radeon HD 5670 in Ubuntu 14.04 but when I install it (using either apt-get or the "Additional Drivers" tab in "Software & Updates" application) I get a blank screen in the next reboot instead of the login screen.
I have 2 GPUs working in "dual" mode (Crossfire).
I have tried both fglrx and fglrx-updates with the same result for both.
I followed all the steps in the Help Wiki but same problem persists.
Output of grep "] (EE)" /var/log/Xorg.0.log
:
[ 10.550] (EE) open /dev/dri/card0: No such file or directory
[ 10.769] (EE) AIGLX error: failed to open /usr/X11R6/lib64/modules/dri/fglrx_dri.so, error[/usr/X11R6/lib64/modules/dri/fglrx_dri.so: cannot open shared object file: No such file or directory]
[ 10.769] (EE) AIGLX error: failed to open /usr/lib64/dri/fglrx_dri.so, error[/usr/lib64/dri/fglrx_dri.so: cannot open shared object file: No such file or directory]
[ 10.769] (EE) AIGLX error: failed to open /usr/X11R6/lib/modules/dri/fglrx_dri.so, error[/usr/X11R6/lib/modules/dri/fglrx_dri.so: cannot open shared object file: No such file or directory]
I also tried:
setting
nomodeset
parameter at bootln -s /usr/lib /usr/lib64
but problem persists.