[Arch x86_64] systemsettings --version: Qt: 4.8.6 KDE Development Platform: 4.13.2 System Settings: 4.11.10 When applying changes to the user's full name under Account Details -> Password & User Account, a graphical password prompt is spawned, but the application freezes upon entering the password and hitting OK. Reproducible: Always Steps to Reproduce: 1. Open systemsettings, navigate to Account Details -> Password & User Account 2. Change full name 3. Hit Apply 4. Enter correct password in graphical prompt Actual Results: 5. Application hangs, has to be terminated Expected Results: 6. Name is changed, application control restored A process tree shows the application having executed /usr/bin/chfn -f NewName. >`-systemsettings,25207 --sync --nofork --nocrashhandler > `-chfn,25208,root -f NewName The fields are [cmd, pid, transitioned uid, args], so note that it's been run as root without having specified the real account to modify. A backtrace of the systemsettings process (http://pastebin.com/fk0SvL16) shows it waiting for said child process to finish: #0 0x00007fa5dc4f0553 in select () from /usr/lib/libc.so.6 #1 0x00007fa5c0385536 in KDESu::PtyProcess::waitForChild() () from /usr/lib/libkdesu.so.5 #2 0x00007fa5c07d5f4d in ?? () from /usr/lib/kde4/kcm_useraccount.so #3 0x00007fa5c07d8e42 in ?? () from /usr/lib/kde4/kcm_useraccount.so #4 0x00007fa5dec8ec77 in KCModuleProxy::save() () from /usr/lib/libkcmutils.so.4 #5 0x00007fa5dea63e03 in ModuleView::moduleSave(KCModuleProxy*) () from /usr/lib/libsystemsettingsview.so.2 A backtrace of the chfn process shows it trying to read input: #0 0x00007f348f4057a0 in __read_nocancel () from /usr/lib/libc.so.6 #1 0x00007f348f6d8881 in ?? () from /usr/lib/libpam_misc.so.0 #2 0x00007f348f6d8c90 in misc_conv () from /usr/lib/libpam_misc.so.0 #3 0x00007f348f8e2c90 in pam_vprompt () from /usr/lib/libpam.so.0 #4 0x00007f348f8e2eea in pam_prompt () from /usr/lib/libpam.so.0 #5 0x00007f348eb03e48 in ?? () from /usr/lib/security/pam_unix.so #6 0x00007f348eb011f4 in pam_sm_authenticate () from /usr/lib/security/pam_unix.so #7 0x00007f348f8dde1f in ?? () from /usr/lib/libpam.so.0 #8 0x00007f348f8dd6b0 in pam_authenticate () from /usr/lib/libpam.so.0 Forcefully killing the chfn process makes systemsettings give up with an error message: >An error occured and your name probably has not been changed. The error message was: >Password: Conjecture: systemsettings spawns a chfn child process and waits for it to exit, but chfn waits reading the password from stdin, and we get a deadlock.
Starting with Plasma 5.4 kcm_useraccount has been deprecated in favor of user-manager (you can run with kcmshell5 user_manager). This means that unfortunately we did not get to fix your bug, sorry about that. We encourage you to try user-manager and report any bug or improvement you may find. Sorry again for not fixing your bug and thanks for caring about KDE :)