Ob Ubuntu 20.04 with linux-generic-hwe-20.04 (5.15.0.66.73~20.04.27) from focal proposed solves the problem. Thank you very much.
Ob Ubuntu 20.04 with linux-generic- hwe-20. 04 (5.15.0. 66.73~20. 04.27) from focal proposed solves the problem. Thank you very much.