when you install plexmediaserver via dpkg -i /path/to/pms.deb did/does the installer detect HW ?
it should show both on the terminal and the installer logs, I can’t remember the file name, but might still be in the /tmp folder.
edit: /tmp/plexinstaller.log on my system
# Plex Media Server installation configuration info: Mon 23 Nov 2020 05:55:37 AM CST
Init=0
Systemd=1
Custom=0
LinuxContainer=0
NewInstall=0
HaveOverride=1
OverrideFile="/etc/systemd/system/plexmediaserver.service.d/override.conf"
PlexUser="plex"
PlexGroup="dvrapps"
VideoGroup="render"
AppSuppDir="/dataplex/pms/Library/Application Support"
PlexTempDir="/transcode"
LangEncoding="en_US.UTF-8"
ExistingVersion=12100
HaveHardware=1
HaveTranscoderPref=1
NeedUser=0
NeedGroup=0
NeedVideo=0
Verbose=1
Running=1
Errors=0
Warnings=0
Havei915=0
HaveBeignet=1
HaveOpenCL=1
Platform="VB1416"
Processor="Intel(R) Xeon(R) CPU E5-2630L v2 @ 2.40GHz"
Distro="Debian GNU/Linux bullseye/sid"
Kernel="Linux proximo 5.8.0-3-amd64 #1 SMP Debian 5.8.14-1 (2020-10-10) x86_64 GNU/Linux"
Memory="64377 5543 5783"
what does ls -lah /dev/dri show ?
tekno@proximo:~$ ls -lah /dev/dri
total 0
drwxr-xr-x 3 root root 120 Nov 10 04:28 .
drwxr-xr-x 18 root root 4.5K Nov 10 04:30 ..
drwxr-xr-x 2 root root 100 Nov 10 04:28 by-path
crw-rw----+ 1 root render 226, 0 Nov 23 05:55 card0
crw-rw----+ 1 root render 226, 1 Nov 23 05:55 card1
crw-rw----+ 1 root render 226, 128 Nov 23 05:55 renderD128
also, what kernel are you running, kernel 5.9 is incompatible with nvidia drivers currently
uname -a
tekno@proximo:~$ uname -a
Linux proximo 5.8.0-3-amd64 #1 SMP Debian 5.8.14-1 (2020-10-10) x86_64 GNU/Linux
