Public bug reported:
**Describe the bug**
On Ubuntu 24.04 (noble), the `mdevctl` package installs the binary into
`/usr/bin/mdevctl`, but the shipped udev rules in
[`/usr/lib/udev/rules.d/80-mdevctl.rules`](https://github.com/mdevctl/mdevctl/blob/master/60-mdevctl.rules)
still reference `/usr/sbin/mdevctl`.
As a result, auto-defined mediated devices are not started at boot, and
`journalctl` shows errors like:
```
$ which mdevctl
/usr/bin/mdevctl
$ journalctl -u systemd-udevd -b | grep mdevctl
8月 23 08:00:36 mukai-ThinkPad-X1-Carbon-7th mdevctl[509]: /bin/sh: 1:
/usr/sbin/mdevctl: not found
```
This is a distribution-specific layout issue, so it seems more
appropriate to patch the package rather than expecting an upstream fix.
**Steps to reproduce**
1. sudo apt install mdevctl
2. Define a mediated device with auto-start enabled: `sudo mdevctl define
--auto --uuid <UUID> --type <mdev_type>`
3. Reboot
4. Check logs
**Workaround**
Creating a symlink works around the problem:
```
$ sudo ln -s /usr/bin/mdevctl /usr/sbin/mdevctl
```
**Environment**
```
$ cat /etc/os-release | grep "PRETTY_NAME"
PRETTY_NAME="Ubuntu 24.04.2 LTS"
$ mdevctl --version
mdevctl 1.3.0
```
** Affects: mdevctl (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2121264
Title:
udev rules reference `/usr/sbin/mdevctl` but binary is installed in
`/usr/bin` on Ubuntu 24.04
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