https://bugs.kde.org/show_bug.cgi?id=423376
Bug ID: 423376
Summary: Terminal programs started in Dolphin continue running
after Dolphin exits, writing to .xsession-errors
Product: dolphin
Version: 19.12.3
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: dolphin-bugs-n...@kde.org
Reporter: 8switchsoftw...@gmail.com
CC: kfm-de...@kde.org
Target Milestone: ---
SUMMARY
When you start a Terminal program from Dolphin, it continues running in the
background even after you close Dolphin. It receives zeroes as input and its
output is directed to .xsession-errors. This continues until the disk is full
(unless the user notices and stops it).
STEPS TO REPRODUCE
1. Write a short program that reads input and writes the same thing back as
output. E.g. something like this:
BEGIN:
cin >> var;
cout << var;
goto BEGIN;
2. Compile it (I used: g++ test.cpp)
3. Go to the a.out file in Dolphin and double click on it.
4. Click on "Execute". The program will now run in the background but won't do
anything (since it's not getting any input). You can see the program listed as
a child process of Dolphin in KSysGuard.
5. Close Dolphin.
OBSERVED RESULT
The child process will continue running in the background (after Dolphin
exits). You can see it will start taking up a whole CPU thread in KSysGuard (or
"top" in Terminal). .xsession-errors will begin filling up with zeroes. It
seems like after dolphin exits, the process starts being fed a steady stream of
zeroes and its output is being redirected to .xsession-errors.
EXPECTED RESULT
I don't know what would be a good way to fix this. Would there be a way to make
all child processes of Dolphin close when Dolphin closes? This might not be
good though as other GUI applications are often started in Dolphin and they
ought to continue running. Perhaps a feature can be added to prevent Dolphin
from starting these sorts of programs to begin with?
Or maybe when Dolphin runs a program like this it should open the Terminal
along with it (much like Windows does when you start a Terminal program from
Explorer).
SOFTWARE/OS VERSIONS
Linux: 5.7.0-050700-generic
KDE Plasma: 5.18.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8
ADDITIONAL INFORMATION
I'm using Kubuntu 20.04.
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