Problem with nvidia-persistenced not working
I'm having a problem which I think I've narrowed down to the nvidia persistence daemon.
Issue: I have my HTPC connected to my Onkyo receiver. When I turn off the receiver and turn it back on, I have no signal from the HTPC. I can press Ctrl + Alt + F1 and run sudo stop lightdm then sudo start lightdm. Once I do this I'm back to the regular screen. This is not a long-term solution though as
- it's a pain
- I will have other users who want to watch TV and will not know what to do.
Through my googlefu I found that I need to set persistence-mode to on, though this will be going away. I have tried this method with sudo "nvidia-smi -pm 1" and it will set it to on, but it doesn't appear to work as the issue will re-occur.
I have also tried running sudo nvidia-persistenced --user [user] --persistence-mode and I can see a process start. When I turn my receiver off though, the same thing occurs.
The syslog has the following:
... nvidia-persistenced: Failed to open PID file: File exists
... nvidia-persistenced: Shutdown (5232)
I have made sure the user I have nvidia-persistenced running as is part of the nvidia-persistenced group. I have also set permissions on the /var/run/nvidia-persistenced/ folder to 777.
I'm going crazy trying to resolve this. I want to be able to turn my receiver off and when I turn it back on have the screen where I left off.
- Running Ubuntu 14.04 (Mythbuntu install)
- Video card is Nvidia GT 730 using driver 352.63
Also, once I get the nvidia-persistenced daemon working, I need to set it up to start at system startup. How would I go about doing that?
Solution 1:
May 2019
With regards to the errors:
... nvidia-persistenced: Failed to open PID file: File exists
... nvidia-persistenced: Shutdown (5232)
I got this error on Ubuntu 18.04.02 LTS after installation of the CUDA toolkit (10.0) and trying to follow the recommended post installation actions. I followed the guide to install via the nvidia repository.
https://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html#install-persistenced
The issue for me was that the daemon was actually running already.
To verify run:
ps aux | grep persistenced
and you should get something along the lines
root 714 0.0 0.0 8864 1396 ? Ss 19:44 0:00 /usr/bin/nvidia-persistenced --verbose
root 6723 0.0 0.0 22000 1112 pts/0 S+ 20:25 0:00 grep --color=auto persistenced
Process 714 (in your case the pid will likely be different) is the daemon already running which is why when I executed the command again it failed.
So the service was actually installed already by the cuda packages. To confirm this run:
systemctl list-units --type service --all | grep nvidia
and you should get something like the following:
nvidia-persistenced.service loaded active running NVIDIA Persistence Daemon
This confirms the service is already up and running.
Solution 2:
I was able to resolve this issue with assistance from another forum, but here is the resolution in-case anyone is interested.
Basically follow the instructions in this link: https://www.mythtv.org/wiki/Nvidia-cards_and_no_picture_when_box_is_on_before_the_TV
In case that link is removed, here's the gist of what I did:
- Run 'nvidia-settings' on the local X-Server
- Click the entry corresponding to your TV (e.g. DFP-0) Click 'Acquire
- EDID' and save the 'edid.bin' file someplace safe, for instance
'/etc/X11/tv-edid.bin' - Open your existing config file, usually in /etc/X11/xorg.conf
- Find the 'Device' section for your video card.
- Add a line to force the stored EDID:
-
Option "CustomEDID" "DFP-0:/etc/X11/edid.bin" - Reboot
I ended up adding the following lines as well, not sure if they are needed or not though:
Option "ModeValidation" "NoDFPNativeResolutionCheck"
Option "ExactModeTimingsDVI" "True"
Option "UseDisplayDevice" "DFP-0"
Option "ConnectedMonitor" "DFP-0" `
Now I'm able to turn off my receiver and/or change the inputs and I can return to my HTPC exactly where I left off.