Created attachment 298535 [details] Trace screenshot Downloaded and installed packages of 5.14 from https://kernel.ubuntu.com/~kernel-ppa/mainline/ I found it is not able to boot. Please, look in attachment. Motherboard: Asus P5Q3 CPU: Intel(R) Xeon(R) CPU X5482 OS: Kubuntu 21.04
This is a bug tracker for the vanilla kernel. The Ubuntu kernel bug reports should be reported here: https://launchpad.net/ubuntu/+bugs You're welcome to compile https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.14.tar.xz and perform regression testing using git bisect.