Hello friends I've been running a few headless multiple GPU boinc servers on 12.10/CUDA5.5 because of the "bug" in the 12.04.4 update. But, 12.10 is not supported any more. https://developer.nvidia.com/cuda-toolkit-55-archive I noticed that there's no warning at CUDA6.0/Ubuntu 12.04.5 so I tried to build the system using these. Everything went pretty well until I got to this command (which worked fine in 12.10/CUDA5.5). Please help me edit or correct this command so that it can be done. Here's the command and the errors which appeared: Code: # apt-get install linux-image-extra-$(uname -r) x11-xserver-utils mesa-utils Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package linux-image-extra-3.13.0-32-generic E: Couldn't find any package by regex 'linux-image-extra-3.13.0-32-generic' Here's a few additional commands I use, so that you can maybe get an idea of what I'm doing: Code: [...] #19 # apt-get install linux-image-extra-$(uname -r) x11-xserver-utils mesa-utils <----- errors because of this command #20 # modprobe nvidia #21 # nvidia-xconfig --enable-all-gpus #22 cp /etc/X11/XF86Config /etc/X11/xorg.conf [...] Looking forward to hear from anyone .