Bug 503467

Summary:	/etc/profile runs twice on login
Product:	[Plasma] plasma-mobile	Reporter:	3n16v85k
Component:	general	Assignee:	Plasma Mobile Bugs <plasma-mobile-bugs-null>
Status:	CONFIRMED ---
Severity:	normal	CC:	carl, espidev
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description 3n16v85k 2025-04-28 09:54:06 UTC

SUMMARY

The plasma mobile session runs /etc/profile twice if it is started from SDDM.

STEPS TO REPRODUCE
1. Install SDDM and plasma mobile
2. Add a marker in `/etc/profile`, like `echo "foo" >> /home/<user>/log.txt
3. Log in
4. Open a konsole and run `cat log.txt`

OBSERVED RESULT

The output contains two lines of `foo`

EXPECTED RESULT

Only a single line of `foo`

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Debian 12
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8

ADDITIONAL INFORMATION

This problem causes my `PATH` to be set incorrectly, because the `/etc/profile.d/nix.sh` script only sets the path if it is run for the first time and `/etc/profile` resets the PATH when run a second time.

Comment 1 3n16v85k 2025-04-28 09:58:57 UTC

I've also tried debugging it a bit by adding this line: `echo ${BASH_SOURCE[@]} >> /home/<user>/log.txt` which shows one expected result of `/etc/profile /etc/sddm/wayland-session`, but the second line is blank so I don't know where that second call comes from.

Comment 2 3n16v85k 2025-04-28 11:13:34 UTC

Devin Lin on matrix showed me that `/usr/bin/startplasmamobile` starts by sourcing `/etc/profile`. This is the line:

https://invent.kde.org/plasma/plasma-mobile/-/blob/master/bin/startplasmamobile.in?ref_type=heads#L8

Removing that line fixes the bug.

Comment 3 Devin Lin 2025-05-04 15:42:29 UTC

I'm not really sure whose responsibility it is to source /etc/profile, currently if the session is launched directly through the systemd unit file we provide there would not be a second "source" of /etc/profile...