reopen 35584 thanks Hi,
> This is finally fixed, see commit 670724edcfe ("gnu: eudev: Fix optical > discs detection/auto-mounting.") While this is currently working, a discussion with systemd [0] revealed that this the existing rule should work as-is, regardless of whether the cdrom block driver is builtin the kernel or as a module. This means the fix is really a workaround rather than something fixing the root issue; I'm thus reopening the issue and will try to find a better solution for it. One extra check I've now made is locally revert the earlier fix (commit 670724), then build the cdrom block driver as a module like it is on Void Linux (which to recall uses the same eudev version without this problem) and tested: the problem persists. In the systemd discussion, they pointed that potentially the problem has to do with the 'udevadm trigger' that is run; perhaps it is done too early still, despite waiting on the udevd unix socket (wait-for-udevd) in the udev-shepherd-service. I'll investigate in this direction. [0] https://github.com/systemd/systemd/pull/37336 -- Thanks, Maxim