Unfortunately I keep running into this issue when trying to install Debian. It occurs after I install the nvidia graphics drivers as per this guide https://wiki.debian.org/NvidiaGraphicsDrivers. I am following the Version 390.48 (via stretch-backports) guide and then the configuration steps via nvidia-xconfig.
How can I troubleshoot this and get it working?
I have now managed to fix the issue. On a fresh install of Debian, these were the steps that allowed me to install the Nvidia drivers:
ttyl mode by pressing CTRL + ALT + F4 or CTRL + ALT + F1sudo /etc/init.d/gdm3 stop. In my case this was gdm3. You may need to type CTRL + ALT + F4/F1 again to get back into ttyl.sudo sh ~/Downloads/cuda_<version>_linux.runAdd the suggested variables to .bashrc:
export PATH=/usr/local/cuda-<version>/bin${PATH:+:${PATH}}
export LD_LIBRARY_PATH=/usr/local/cuda-<version>/lib64${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}
export CUDA_VISIBLE_DEVICES=0
What Nvidia card do you have? Before did you install Nvidia drivers, did you use nouveau drivers? I had a similar problem with Debian stable and a Dell Inspiron that brings a hybrid graphics card: Intel and Nvidia, and the solution was to force through Xorg.conf that always the X systems start with Nvidia graphics. But a few months ago, with Debian buster, the problem was gone
