X570 Pro4 USB woes

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   Hello all

I have an X570 Pro4 MB with NVIDIA 4070 and AMD Ryzen 7 5800X and I am experiencing problems with USB storage devices (tried two: one that presents itself as an USB stick and one vanilla USB stick). I am running Linux so when I bought the X570 I switched MB and video card and kept everything else (including the OS). The stirage devices worked without a glitch with the old MB, and they still work, however they leave hanging processes, which prevent the system from powering off or rebooting:

chalki:~ # ps axu | grep " D "
root     25051  0.0  0.0      0     0 ?        D    07:10   0:01 [kworker/5:2+usb_hub_wq]
root     28080  0.0  0.0   5812  2248 pts/0    S+   08:48   0:00 grep --color=auto  D 
chalki:~ # ps axu | grep " D "
root     28085  0.0  0.0      0     0 ?        D    08:48   0:00 [kworker/5:0+pm]
root     28128  0.0  0.0   5812  2108 pts/0    S+   08:48   0:00 grep --color=auto  D 
chalki:~ # ps axu | grep " D "
root       570  0.0  0.0      0     0 ?        D    03:34   0:03 [kworker/5:1+pm]
root      5388  0.0  0.0      0     0 ?        D    05:55   0:00 [usb-storage]
root      5536  0.0  0.0   5812  2248 pts/0    S+   05:56   0:00 grep --color=auto  D 
chalki:~ # ps axu | grep " D "
root       570  0.0  0.0      0     0 ?        D    03:34   0:04 [kworker/5:1+usb_hub_wq]
root      5408  0.0  0.0      0     0 ?        D    05:55   0:01 [kworker/7:2+usb_hub_wq]
root     13550  0.0  0.0   4876  2824 ?        D    06:50   0:00 eject /dev/sdc
root     13557  0.0  0.0   5812  2236 pts/0    S+   06:50   0:00 grep --color=auto  D 

I habe BIOS 5.60 installed. Any idea what I can do about it?

Best

George