(In reply to Lin Ma from comment #3) > Could you add my repo > https://download.opensuse.org/repositories/home:/lin_ma:/branches:/openSUSE:/ > Leap:/15.5/standard/ in your leap 15.5 host, then degrade your current > libusb to v1.0.21 and test again? Unfortunately that didn't work. I couldn't get the vm to start with the downgraded 1.0.21: > jan 26 11:23:48 vmhost libvirtd[1651]: Unable to read from monitor: Verbinding is weggevallen > jan 26 11:23:48 vmhost libvirtd[1651]: internal error: qemu unexpectedly closed the monitor: 2024-01-26T10:23:48.875637Z qemu-system-x86_64: -device {"driver":"usb-host","hostdevice":"/dev/bus/usb/001/003","id":"hostdev0","bus":"usb.0","port":"4"}: failed to open module: /usr/bin/../lib64/qemu/hw-usb-host.so: undefined symbol: libusb_set_option > 2024-01-26T10:23:48.875721Z qemu-system-x86_64: -device {"driver":"usb-host","hostdevice":"/dev/bus/usb/001/003","id":"hostdev0","bus":"usb.0","port":"4"}: 'usb-host' is not a valid device model name