Hot plug sata does not work on Fedora 42

[Alan]

I have a couple of removable sata drive docks that plug directly into
the sata cables on the motherboard.

On Fedora before 42, I could plug in a drive and mount it. It would ask
for sudo permissions and the encryption password and everything worked
fine.

As of Fedora 42, it doesn't reread the attached drives. If I have a 4tb
drive and I unmount it and put in a 6tb drive, it still thinks that the
4tb drive is attached and refuses to recognize the 6tb drive.

Gnome doesn't see the drive. Gnome-disks doesn't see the drive. KDE
doesn't see the drive.

This has worked for a very long time, but no longer works with 42.
Anyone have a idea what has changed? I hate to have to reboot every
time I change a disk.

I have verified that this used to work on Fedora 41 using a live cd on
the same hardware. I also posted this to Reddit, but got no useful
answers.

I would submit a bug on this, but I don't know what component is
failing. I tested the rawhide kernel on 42 and got the same results.
Nothing shows in the dmesg log because it doesn't register that the
drive has changed.

Ideas?

[Marco Moock]

On Wed, 04 Jun 2025 09:24:14 -0700 Alan via users
 wrote:
> I have a couple of removable sata drive docks that plug directly into
> the sata cables on the motherboard.

Check the UEFI settings. Is Hotplug enabled for the port?

Then check dmesg on Fedora.

[Alan]

On Wed, 2025-06-04 at 19:00 +0200, Marco Moock wrote:
> On Wed, 04 Jun 2025 09:24:14 -0700 Alan via users
>  wrote:
> > I have a couple of removable sata drive docks that plug directly
> > into
> > the sata cables on the motherboard.
>
> Check the UEFI settings. Is Hotplug enabled for the port?
>
> Then check dmesg on Fedora.

Bingo! We have a winner!

The ports were set for "hotplug supported", but not "hotplug enabled".
Enabling the port fixed it.

Thanks!