Comment 4 for bug 1913651

I verified this by using ubuntu-drivers in a chroot on a system with nvidia but "runtimepm" isn't supported on my system so I had to change the check for it from "if packages[p].get('runtimepm'):" to "if True:". After doing that I received the original Traceback:

...
  File "/usr/bin/ubuntu-drivers", line 161, in command_install
    pm_fd = open('/run/nvidia_runtimepm_supported', 'w')
PermissionError: [Errno 13] Permission denied: '/run/nvidia_runtimepm_supported'

Now for the verification:

Preparing to unpack .../ubuntu-drivers-common_1%3a0.8.6.4~0.20.04.1_amd64.deb ...
Unpacking ubuntu-drivers-common (1:0.8.6.4~0.20.04.1) over (1:0.8.6.3~0.20.04.2) ...
Setting up ubuntu-drivers-common (1:0.8.6.4~0.20.04.1) ...
(focal-amd64)root@impulse:~# vi /usr/bin/ubuntu-drivers
(focal-amd64)root@impulse:~# sudo -i -u ubuntu
(focal-amd64)ubuntu@impulse:~$ ubuntu-drivers install
E: Could not open lock file /var/lib/dpkg/lock-frontend - open (13: Permission denied)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), are you root?