I have a Ubuntu 18.04 system with an Intel integrated and a Quadro T2000 graphics card. I had the Nvidia driver successfully installed. However, since there was some issue when using the docker, I decided to re-install the Nvidia driver.
I uninstalled using
sudo apt-get remove -y --purge nvidia-*', then installed the Nvidia driver 440.82 using Software & Updates. After the installation and reboot, nvidia-smi
gave normal output, butnvidia-settings` gave an error message (see pics below). Besides, in the X server panel, the “Prime Profiles” tab was missing.
I then uninstalled and installed the driver again from Software & Updates and rebooted. However, this time both
nvidia-settings gave error messages. Though
prime-select query showed that Nvidia was chosen,
glxinfo|egrep "OpenGL vendor | OpenGL renderer" showed that the Intel card was actually used (see pic below)
I’m pretty confused why reinstallation cannot correctly install the driver, and why each reinstallation gives a different wrong result. It seems that the previous Nvidia drivers might not be completely removed, thus causing trouble after the new installation.
Does anyone know what the problem is? Thanks!
The bug report is attached.