I'm a bit hesitant to mention this as it may be a red herring - and my system has been stable and not hung due to pure coincidence - but I installed an OEM kernel yesterday and haven't experienced my regularly scheduled daily hang since:
sudo apt install linux-oem-20.04 linux-tools-oem-20.04 https://wiki.kubuntu.org/Kernel/OEMKernel explains more - they are officially supported kernels apparently, and not prelaunch/beta in any way. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1861395 Title: system hang: i915 Resetting rcs0 for hang on rcs0 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1861395/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs