I currently have been running Kubuntu 12.04 without any problems. I decided to upgrade to 12.10. After the log in screen I given a black screen with the following error: gpu lock up, switching to fbucm, failed to idle channell 1. My computer then freezes and locks up. I have a gforce 6800gt video card. I believe this error is related to a video card driver problem. Does any one have any ideas as to what can I try do to get 12.10 to start up in to kde?
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Sounds like when the kernel was upgraded the nVidia driver wasn't, or wasn't properly. Not knowing which version of the nVidia drivers you have installed, you can play it safe and try the "current" one. When you get to the login screen, don't log in, instead press ATL+CTRL+F1 together to get to a terminal shell. Then type in:
sudo apt-get install --reinstall nvidia-current
Enter your password when prompted, and that will install (or reinstall if it happens to be what you had) the nVidia driver and set it up for the new kernel. When it's done, type "sudo reboot" to restart the computer from the terminal. That should get you working again. If apt-get gives you a list of packages that will also need to be installed, just answer yes and let it install what it needs. There may be some dependencies that didn't get installed with the update that caused the problem, and apt-get will install them to fix it.
If instead apt-get gives you a message like "nvidia-current has unmet dependencies, try apt-get install -f" or something to that effect, do that. At the command prompt type in 'sudo apt-get install -f'. The "-f" means "fix", and apt will pull down what dependencies are missing and try to fix whatever's broken. After it has installed what's needed you may need to re-run the nvidia-current install. Once the "-f" downloads are done and installed, if you see a message like "building module for kernel 3.X.X" followed later by "running update-initramfs", then you won't need to re-install the driver, it's there already and it's being configured. When everything is done and the command prompt returns, reboot the system.Computers don't make mistakes. They only execute them. -
Thank you Dutchman for your reply.
I fixed it earlier last night after finding this link on google:
http://askubuntu.com/questions/20267...-work-in-12-10
There is a reported bug in 12.10:
https://bugs.launchpad.net/ubuntu/+s...s/+bug/1068341Comment
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