Package: src:linux Version: 5.10 After upgrade to bullseyes' kernel, the system always hang after about 10 min with an error from IML log An Unrecoverable System Error (NMI) has occurred (Service Information: 0x00000008, 0x89480000) Kernel 5.14 from experimental also has this problem. Kernel 4.19 works fine. Fedora 34 seems to be working well. -- YunQiang Su