[dolphin] [Bug 446930] New: Several external (LUKS) devices issues with "Removable Devices" system settings on login

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https://bugs.kde.org/show_bug.cgi?id=446930

            Bug ID: 446930
           Summary: Several external (LUKS) devices issues with "Removable
                    Devices" system settings on login
           Product: dolphin
           Version: 21.12.0
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: kde-bugs at cixera.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

SUMMARY
I have more than 10 external USB 3.0 LUKS encrypted devices connected to 

1. After using the system for months, I have a ton (> 600) of empty devices
listed in the "Disconnected Devices"  list. I had to remove them one by one,
which took 10 minutes. The "Forget Device" button alone is not practicable in
this case. Adding a "Remove Old Devcies" button might help, e.g.

2. On every login, I had to type the authentication password (sudo) for not all
but several devices which Plasma tried to reconnect on login. Strangely, I had
to type the authentication password only 4 times while there were more LUKS
encrypted devices were reconnected. It seems like `sddm` password is not
recognized for all LUKS devices. Additionally, still then, I had to remount
manually other external USB devices via Dolphin "Devices" panel each time.
Really tiresome task on every login to retype sudo passwords, remount manually
removable LUKS devices each time.

3. Encrypted and their unencrypted labels are both listed in
"Attached/Disconnected Devices". It's not clear which ones to click for `On
login` and `on attach` settings.

4. Dolphin does not list UUIDs or labels of devices, which makes it difficult
to distinguish between not already unencrypted LUKS devices before mounting
them

5. Now, after manually removing each disconnected device from the list,
rebooting the system, Dolphin things half of the devices are "Disconnected
Devices" even if all devices are listed in `lsblk` list as expected.

It feels like the provided "global options" in "Removable Devices" system
settings on the top are confusing and maybe technically don't work as expected.
One thing I wonder, why are is the devices list greyed out instead of emptying
the list completely if e.g. "Automatically mount all ..." options are selected?

EXPECTED RESULT

I expect that I don't have to retype the sudo password on each login for some
or all removable devices after having confirmed to store their passwords once
(authenticated via sddm e.g.).

Also all devices in `lsblk` should be listed in Dolphin's "Devices" list in the
left panel. 

Additionally, I only need the LUKS device labels in those lists not two entries
for each device like "ExternalHD1" + "1.4 TiB Encrypted Device" in "Removable
Devices" lists, too.

I expect, that connected devices (lsblk) don't split up in different "Removable
Devices" lists like "Attached Devices" and "Disconnected Devices" even if they
are all connected to the system.

PS: I wonder, why are devices greyed out instead of emptying the list
completely if e.g. "Automatically mount all ..." option is selected?

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.23.4
KDE Frameworks Version: 5.88.0
Qt Version: 5.15.2
Kernel Version: 5.14.16-212-tkg-pds (64-bit)
Graphics Platform: X11
Processors: 16 × AMD Ryzen 7 3800X 8-Core Processor
Memory: 47.0 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 1070/PCIe/SSE2

ADDITIONAL INFORMATION

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