I'm able to reproduce this on a Focal 5.4 kernel by sending data to a Pi via a USB/serial adapter. I'm not able to reproduce this with the Raspberry Pi OS running a 5.4 kernel. I recompiled the Raspi OS kernel using the Ubuntu config and *now* I can reproduce it. It seems it's a config option difference in the Ubuntu kernel that triggers this.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1880388 Title: rpi3b+ becomes unresponsive after closing a program To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/1880388/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs