https://bugs.kde.org/show_bug.cgi?id=368686
Bug ID: 368686
Summary: frozen session after swiching sessions when using two
sessions
Product: ksmserver
Version: 5.7.3
Platform: Other
OS: Linux
Status: UNCONFIRMED
Severity: crash
Priority: NOR
Component: general
Assignee: l.lu...@kde.org
Reporter: martin.steigerw...@teamix.de
Using Plasma 5.7.4 on KF 5.25.
I use two Plasma sessions. One for the private user on tty7 and one for the
work related user on tty8. On work breaks I switch between sessions.
Sometimes it happens that either the work related or the private session is
"frozen" then (see below).
I seek help what I can do to find out what is going wrong with that frozen
session in order to provide more helpful details for this bug report.
Reproducible: Always
Steps to Reproduce:
1. Have to Unix users
2. Use two Plasma sessions
3. After a while switch between them
Note, it does not happen all the time.
Actual Results:
Sometimes it happens that either the work related or the private session is
frozen then. "Frozen" means: It does not react to any user input. I cannot move
windows, I cannot open menus, I cannot type text.
I want to get back to work with the session quickly then, thus I then try to
stop all processes of the "frozen" session from the other, still working
session.
Like this:
merkaba:~> killall -u workuser
merkaba:~> killall -u workuser
merkaba:~> killall -u workuser
merkaba:~> killall -u workuser
merkaba:~> killall -u workuser
merkaba:~> killall -u workuser
merkaba:~> killall -u workuser
merkaba:~> killall -u workuser
merkaba:~> killall -u workuser
merkaba:~> killall -u workuser
merkaba:~> killall -u workuser
merkaba:~> killall -u workuser
merkaba:~> killall -u workuser
Yet ksmserver remains:
merkaba:~> ps aux | grep workuser
root 45 0.0 0.0 0 0 ? S< 09:51 0:00 [vmstat]
privateuser 2263 0.0 0.0 70088 4880 ? S 09:51 0:00 kwrapper5
/
usr/bin/ksmserver
privateuser 2264 0.0 0.1 618136 28000 ? Sl 09:51 0:00 /usr/bin/
ksmserver
workuser 21169 0.0 0.0 618160 9148 ? S 13:21 0:00
/usr/bin/
ksmserver
root 21303 0.0 0.0 12724 1028 pts/0 S+ 13:21 0:00 grep workuser
And only goes away after:
merkaba:~> killall -9 -u workuser
Expected Results:
Both sessions keep working over the whole duration I use them.
This happens regardless of whether I use the Intel xorg driver or as recently
the modesetting driver. On Debian Unstable on this ThinkPad T520:
> phoronix-test-suite system-info
Phoronix Test Suite v5.2.1
System Information
Hardware:
Processor: Intel Core i5-2520M @ 3.20GHz (4 Cores), Motherboard: LENOVO
42433WG, Chipset: Intel 2nd Generation Core Family DRAM, Memory: 16384MB, Disk:
300GB INTEL SSDSA2CW30 + 480GB Crucial_CT480M50, Graphics: Intel 2nd Generation
Core Family IGP, Audio: Conexant CX20590, Monitor: P24T-7 LED, Network: Intel
82579LM Gigabit Connection + Intel Centrino Advanced-N 6205
Software:
OS: Debian unstable, Kernel: 4.8.0-rc6-tp520-btrfstrim+ (x86_64), Desktop: KDE
Frameworks 5, Display Server: X Server 1.18.4, Display Driver: modesetting
1.18.4, OpenGL: 3.3 Mesa 12.0.2, Compiler: GCC 6.2.0 20160901, File-System:
btrfs (ecryptfs), Screen Resolution: 3840x1080
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