On my system I noticed that Kalendar's reminder daemon is shown as "org.kde.kalendarac" despite `/etc/xdg/autostart/org.kde.kalendarac.desktop` having a proper name and icon. EasyEffects is similarly affected if its autostart option is enabled within the app, with it showing as "easyeffects-service", again despite `~/.config/autostart/easyeffects-service.service` having a proper name and icon.
I noticed that the key difference between those two and other autostarted apps on my system that look fine is that those two do not have a corresponding .desktop file in either `/usr/share/applications` or `~/.local/share/applications`, so I tried copying the problematic autostart .desktop files to `~/.local/share/applications` and adding `NoDisplay=true` to them as a workaround, and restarting System Monitor afterwards made them appear correctly, with the right name and icon.
I do have systemd startup enabled, not sure if that's relevant or not.
STEPS TO REPRODUCE
1. Install Kalendar (which on Arch at least includes the `/etc/xdg/autostart/org.kde.kalendarac.desktop` file)
3. Open System Monitor and look at the Applications table
"org.kde.kalendarac" is present in the table with no icon.
"Kalendar Reminder Client" (or the translated name I guess) should be present instead, with the Kalendar icon.
Operating System: Arch Linux
KDE Plasma Version: 5.24.4
KDE Frameworks Version: 5.92.0
Qt Version: 5.15.3
Kernel Version: 5.17.1-arch1-1 (64-bit)
Graphics Platform: Wayland
Your analysis is correct.
The app information is taken from the cgroup name (e.g. firstname.lastname@example.org) and the application id is extracted and looked up in /usr/share/applications. I guess we could also consider the desktop files in the autostart dirs for autostart units (we know which ones are because they end in @autostart.service)
Git commit 5d1d0e9287d68fe1dd14a2157fcccb5428162335 by David Redondo.
Committed on 06/05/2022 at 06:56.
Pushed by davidre into branch 'master'.
Search for desktop files in autostart dir if service was autostarted
M +9 -0 autotests/cgrouptest.cpp
A +16 -0 autotests/data/autostart/org.kde.korgac.desktop
M +7 -0 processcore/cgroup.cpp