Hello I use a USB device with RTL8821CU chipset and it fails with errors like this: rtw_8821cu: read register 0xf04 failed with -110 Device then becomes unresponsive and requires a system reboot. Usually it takes multiple days for the device to fail this way. Full kernel log is available here: https://pastebin.com/NnnRrEhF I tried (with no success): - setting usbcore.autosuspend to -1 - setting rtw88_core.disable_lps_deep to y - setting "Power Management: off" with "iwconfig $iface wlx1cbfce468596 power off» I use this server to serve media content at home with Plex Media Server. My OS is Debian with kernel 6.9.7. Please tell me if you need any more data to address this issue. -- Kirill Alekseev