Comment 30 for bug 1910709

After upgrading all packages my laptop gave a black screen on boot. After more digging, I figured out it was because of the nvidia drivers. As of now, I'm using the X.Org Nouveau open-source driver. I removed all Nvidia drivers using (from recovery mode) and this seemed to work.

```ssh
sudo apt purge ^nvidia-
```

However, I'd like to use the Nvidia driver again ASAP.

<hr>

On trying to run (the recommended driver):

```ssh
sudo apt get nvidia-340
```

I got this:

```ssh
dpkg: error: version '-' has bad syntax: revision number is empty
dpkg: error: version '-' has bad syntax: revision number is empty
update-initramfs: deferring update (trigger activated)
INFO:Enable nvidia-340
DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/put_your_quirks_here
DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/dell_latitude
DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/lenovo_thinkpad
Adding system user `nvidia-persistenced' (UID 126) ...
Adding new group `nvidia-persistenced' (GID 133) ...
Adding new user `nvidia-persistenced' (UID 126) with group `nvidia-persistenced'
 ...
Not creating home directory `/'.
Loading new nvidia-340-340.108 DKMS files...
Building for 5.8.0-36-generic
Building for architecture x86_64
Building initial module for 5.8.0-36-generic
ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/nvidia-340.0.cr
ash'
Error! Bad return status for module build on kernel: 5.8.0-36-generic (x86_64)
Consult /var/lib/dkms/nvidia-340/340.108/build/make.log for more information.
dpkg: error processing package nvidia-340 (--configure):
 installed nvidia-340 package post-installation script subprocess returned error
 exit status 10
Processing triggers for mime-support (3.64ubuntu1) ...
Processing triggers for gnome-menus (3.36.0-1ubuntu1) ...
Processing triggers for libc-bin (2.31-0ubuntu9.1) ...
Processing triggers for man-db (2.9.1-1) ...
Processing triggers for desktop-file-utils (0.24-1ubuntu3) ...
Processing triggers for initramfs-tools (0.136ubuntu6.3) ...
update-initramfs: Generating /boot/initrd.img-5.8.0-36-generic
Errors were encountered while processing:
 nvidia-340
E: Sub-process /usr/bin/dpkg returned an error code (1)
```