Hey Thomas, On Fri, Feb 12, 2021 at 10:40:06PM +0100, Thomas Lange wrote: > I cannot confirm this problem. > It works without problems on a bullseye VM. > > Maybe you can strace the dracut call and see which parameters are > given to the dracut-install call.
attached is the output of `dracut --debug`. The install call that fails is: /usr/lib/dracut/dracut-install -D /var/tmp/dracut.OUZAAd/initramfs --kerneldir /lib/modules/5.10.0-2-amd64/ -m --silent -s 'drm_crtc_init|drm_dev_register|drm_encoder_init' -S iw_handler_get_spy Looking at the lines before that, it seems it looks at /sys/bus/platform/devices/dock.0/modalias, but that file is empty, so I guess that's why it's not passing a source to d-install? The other failures happen after looking at /sys/bus/platform/devices/dock.1/modalias and /sys/bus/platform/devices/dock.2/modalias, which are also both empty. Looking at the code in /usr/lib/dracut/modules.d/50drm/module-setup.sh: # if the hardware is present, include module even if it is not currently loaded, # as we could e.g. be in the installer; nokmsboot boot parameter will disable # loading of the driver if needed if [[ $hostonly ]]; then for i in /sys/bus/{pci/devices,platform/devices,virtio/devices,soc/devices/soc?}/*/modalias; do [[ -e $i ]] || continue if hostonly="" dracut_instmods --silent -s "drm_crtc_init|drm_dev_register|drm_encoder_init" -S "iw_handler_get_spy" $(<"$i"); then if strstr "$(modinfo -F filename $(<"$i") 2>/dev/null)" radeon.ko; then hostonly='' instmods amdkfd fi fi done else dracut_instmods -o -s "drm_crtc_init|drm_dev_register|drm_encoder_init" "=drivers/gpu/drm" "=drivers/staging" fi I have `hostonly` set, and it passes $(<"$i") to dracut_instmods, which is empty in the dock.X case. FWIW, the hardware is a Thinkpad X201s, which has a dock port, but is not docked right now. HTH Evgeni