I had a problem with my HDMI without sound and I found this fix.
Edit /etc/default/grub and change this line:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
to this line
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash radeon.audio=1"
Now run "sudo update-grub", then reboot your computer.
Now, the boot stuck in a file systems check. Each time it's stucked in a different message. Sometimes, about bluetooth, others for network monitor etc. I cannot open Linux from recovery and from older versions, each one stuck in a black screen.
I cannot access my pc and if I will not find a sollution soon, I will turn to a clean install with losing all my data :(
update-grub
again remove the offending option from your/etc/default/grub
– Graeme Mar 19 '14 at 20:45update-grub
again after you have removedradeon.audio=1
(assuming this is what caused the problem). The only way for you to do this if you cannot boot is to boot from a live CD/USB drive and run the commands inside achroot
environment, as described in detail the linked answer. You can skip step 4 and thegrub-install
part of step 5, but running them won't do any harm. Just make sure you get the correct partition as described and do not blindly copy the commands. – Graeme Mar 19 '14 at 20:56