- I have a Magewell USB Capture HDMI+ - I can replicate this problem in Windows (but let me double check)
- The microphone works fine - I have the following setup: Microphone --XLR--> Camera[bmpc6k] --hdmi--> Video Interface[Magewell USB Capture HDMI+] --usb3--> Computer -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1888297 Title: usb camera only works once until reset Status in linux package in Ubuntu: Incomplete Bug description: I have a usb camera (SDI camera, attached to magewell usb capture) which only works once. It displays the image in something like OBS Studio or ffplay, and works perfectly. I can stop the capture. Then trying to open the camera a second time does not work, I get a black screen in ffplay/OBS. To fix this, I can unplug the device and plug it back in, at which point it works until stopped and restarted. So basically, I always have to unplug it and plug it back in after stopping otherwise it won't display an image a second time. Debian 10 works perfectly fine using same physical hardware and video software, but using (x)ubuntu 20.04 I get the problem as noted above. So I suspect a kernel bug/regression. I'm using an AMD 16 core system but don't know if it's related to that. It makes no difference whether I use the USB ports on the motherboard (USB 3.1), or whether I use an addon USB 3.1 PCI card. (And debian doesn't care either which usb port I use, it works correctly there across the board). I have no idea how to report more information. I've done the software updates etc., so whatever kernel is running in 20.04 as of this date, that's what I'm using now. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1888297/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
