I started kernel bisecting in an attempt to find the commit that causes this issue. Painfull process.
I found another workaround (not a solution) on stackoverflow (which has been deleted from stackoverflow by now). The workaround was to disable virtualization in the BIOS: Intel VTX -> disabled , Intel VTD -> disabled. This "worked" for me. The machine booted. But ... /proc/interrupts still showed about 50.000 interrupts/sec from the smbus. So, the issue of mucho interrupts is still there but it is somehow rate limited allowing the machine to boot and be sufficiently responsive. I prefer blacklisting i2c_i801 upto now. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1931001 Title: kernel: watchdog: BUG: soft lockup - CPU#3 stuck for 22s! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.11/+bug/1931001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
