I certainly haven’t figured out what the cause is. I’ve replaced the tuner card ( Hauppauge WinTV-quadHD PCI Express TV Tuner Card model 1609) to no avail.
The biggest commonality seems to be when I access the server for either live TV or playback of recorded material from different devices.
All of my viewing is done via Roku devices. Primary is a Roku Ultra, using an ethernet connection, but I occasionally watch from the Kitchen, which is a fairly new (6 Mo. or less) Roku Express which is wireless only.
While it certainly doesn’t happen every time I use the Roku Express, switching between that device and the primary seems to be the most reliable way to trigger a failure.
When it does fail, it seems to crash the tuner child process. The parent plexmediaserver process does not crash.
I did find the following error in the logs: (Plex Tuner Service.1.log)
Feb 09, 2022 09:00:49.625 [0x7f4b5695ab38] ERROR - Error. Received SIGSEGV: Segmentation Violation.
Seeing as this thread is tagged for Windows servers, I did start my own thread regarding this, there might be something useful in there.