There is an nvidia-persistenced daemon issue after NVIDIA Drivers installation. It appears after each apt upgrade operation, very inconvenient.

Steps:
1. Install NVIDIA Drivers:
  sudo apt install -y build-essential linux-headers-$(uname -r) dkms
  sudo reboot
  sudo apt install -y nvidia-driver firmware-misc-nonfree nvidia-settings nvidia-kernel-dkms
>> Errors:
nvidia-persistenced
Error: Sub-process /usr/bin/dpkg returned an error code (1)
  sudo reboot

2. Do upgrade packets:
  sudo apt update && sudo apt upgrade
>>  nvidia-persistenced
Error: Sub-process /usr/bin/dpkg returned an error code (1)

Desktop Environment became unavailable during next reboot!
Steps for a temporary fix:
  ps -ef | grep -E '[n]vidia-persistenced' || true
  sudo kill -TERM xxxx
  sudo chown -R nvpd:nvpd /run/nvidia-persistenced
  sudo chmod 0755 /run/nvidia-persistenced
  sudo rm -f /run/nvidia-persistenced/*
  sudo /etc/init.d/nvidia-persistenced start
If Desktop Environment became unavailable:
  sudo apt install -y linux-headers-$(uname -r)

Logs:
$  sudo tail -n 80 /var/log/syslog
2026-07-23T02:38:02.231733+03:00 devuan nvidia-persistenced: Failed to lock PID file: Resource temporarily unavailable
2026-07-23T02:38:02.231741+03:00 devuan nvidia-persistenced: Shutdown (18241)
$  ps -ef | grep -E '[n]vidia-persistenced' || true
nvpd      1618     1  0 jul22 ?     00:00:00 /usr/bin/nvidia-persistenced --user nvpd
$ ls -ld /etc/init.d/nvidia-persistenced
-rwxr-xr-x 1 root root 2670 may 23  2025 /etc/init.d/nvidia-persistenced
$ ls -ld /run/nvidia-persistenced
drwxr-xr-x 2 nvpd nvpd 80 jul 22 22:29 /run/nvidia-persistenced
$ groups
... video ...
$ uname -r
6.12.95+deb13-amd64

I'm using last Devuan with SysVinit. Standart NVIDIA 1060 card (530 driver).
p.s. All other things are doing well, I'm very happy with Devuan guys, thank you a lot! :-)