Waking from suspend results in threads for "DesktopVideoUpdater" and two threads for "DesktopVideoHelper" consuming an entire 100% of a CPU each, for a total of 400% of a CPU being consumed. This performance bug has been reported to https://forum.blackmagicdesign.com/viewtopic.php?f=18&t=109244 DesktopVideoUpdater and DesktopVideoHelper and comments say it happens on Manjaro, Debian, Mint, and Arch.
I am also noting that video capture in OBS doesn't work on the realtime kernel (linux-rt)...simply produces a black image in OBS and freezes OBS.
Pinned Comments
goldensuneur commented on 2020-03-02 19:00 (UTC)
I finally had time to investigate the issue. It looks like that as of 11.5, the
DesktopVideoHelper.service
has to be running for the capture card to work properly.