The other approach I tried was suggested by. I was hoping Debian 11 had some way of repairing the OS, and suggested a rescue/enable=true boot command, which I added by pressing e in GRUB. I can switch to other sessions (using Ctrl+ Alt+ F3), but using startx makes that session another unresponsive black screen. Since restarting, the screen is black after booting. I then restarted because xrandr -setprovideroutputsource NVIDIA-G0 modesetting & xrandr -auto returned the same error. In this process, I ran sudo apt reinstall nvidia-driver bumblebee, and nvidia-xconfig. This all was in response to xrandr -setprovideroutputsource NVIDIA-G0 modesetting & xrandr -auto returning that NVIDIA-G0 doesn't exist. Attempting re-installation of Nvidia drivers and bumblebee following realization that xrandr -listproviders did not list the Nvidia card nor the Intel card. This was necessary to use primusrun with UCSF Chimera, which defaulted to the integrated Intel graphics card and threw an error when attempting to "Launch with dedicated graphics card" Installing primus using sudo apt install nvidia-optimus.I had Debian set up to my liking with the capacity to run apps on the dedicated Nvidia graphics card except for two things I changed:
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