Hi, I’ve been trying to find a way to contact plex directly but I can find a way so I’m posting on the forum in hopes an Admin can help me out.
I purchased the Plex Pass primarily for HW transcoding but this doesn’t seem to be working for me, the CPU is constantly at around 80% load and the GPU is 0%.
Specs;
Intel G3900
Nvidia Geforce GTX 1080Ti
Windows 10
No monitor is connected to my machine, the GPU is set to primary display in Windows, any help would be appreciated.
Connect a monitor (or simulate one with a “HDMI dummy plug”), reboot Windows
Don’t run PMS as a Windows system service if you want hardware transcoding.
Side note: you should even be able to utilize the QuickSync unit in your CPU
(only HEVC with HDR/10bit will fail there)
So make sure you don’t disable the onboard GPU in the BIOS and install the appropriate graphics driver software for it – additionally to the nVidia driver.
Thanks for the quick reply;
Before I invest in one of the HDMI dummy plugs, I will test it with a monitor plugged in but I’m not sure this is the problem… thank you for the suggestion though, appreciate it.
in terms of the the CPU (QuickSync) I assume that this is working as the CPU is currently at a high usage % while plex is transcoding (HW) no?
Depends on the job.
Normally, you should see a lower cpu load with activated HW transcoding than without.
But as you don’t have a monitor connected yet, I assume that currently only the re-encoding is hardware-accelerated but not the previous decoding process.
You should be able to see it in the NowPlaying/Dashboard during playback.
Funny you mentioned that, when plex is showing “HW” transcoding, my GPU does show tiny usage for the “Encoding” graph within task manager, but I’m talking like 5% and small/tiny usage on the encode graph, the CPU is still heavily loaded though at this point…
so judging by the info above, what do you think I should do to get it fully working? regarding the monitor attached situation, is there no way of side-stepping out of having to purchase an additional adapter? can I not simply plug in a spare HDMI cable and leave it plugged into nothing?
To make things simple for everyone, wouldn’t it be wise for Plex media server to show you actual GPUs/CPUs or any transcoding devices you have installed in your setup so we can simply select which device we want it to use for the HW transcoding? I’ve seen a lot of people puzzled with this same issue.
No, that would be the same like plugging in nothing at all. The dummy plug will “simulate” a monitor and tell the GPU that it can display 4K video (depends on the type of plug – older ones only tell the GPU 1080p resolution).
so you’re saying, once I plug a monitor into the GPU (not the onboard) it will transcode using the GPU?
It should. I cannot give any guarantees though (there are more technical details), but a connected monitor is one of the basic requirements to get hardware transcoding working on Windows.
You might wanna try the plug on both the internal and add-on HDMI ports. (Reboot the machine inbetween) to see if that makes a difference.
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