[Konsole-devel] [konsole] [Bug 356723] New: Incomplete window updates after updating to Plasma 5.5.0

[Stefan Becker via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356723

            Bug ID: 356723
           Summary: Incomplete window updates after updating to Plasma
                    5.5.0
           Product: konsole
           Version: 15.08.3
          Platform: Fedora RPMs
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: konsole-devel at kde.org
          Reporter: chemobejk at gmail.com

After updating to Plasma 5.5.0 konsole window updates are incomplete. When
konsole starts to scroll only the lowest 2-3 lines of text (and some random
lines above) are updated. To get the real current content of the konsole
window, you have to click outside the konsole window (deactivates window) and
click on the konsole window (activates window again).

NOTE: konsole was not updated when I received the Plasma 5.5.0 update. So this
issue might be related to Plasma changes. But as far as I can see only konsole
has issues with window updates. I updated now to konsole 5.12.0, but the
problem is still there.

Several other people I have discussed on IRC with have also noticed this issues
on their system with different HW and open source drivers, so this is not an
Nvidia issue. I use a Dell laptop with Nvidia blob driver and describe how I
can reproduce this on my system.

Changing compositor settings or disabling compositor completely does not fix
this problem.

Reproducible: Always

Steps to Reproduce:
- laptop out of docking station, i.e. one screen only
- login to KDE session
- force scrolling in konsole sessions, e.g. commands with many lines of output
-> window updates are OK
- put laptop into docking station, switch to 2 external screens
- force scrolling in konsole sessions or scroll konsole window
-> lowest 2-3 lines are usually updated, randomly some other lines too
- switch back to 1-screen mode (laptop display)
- force scrolling in konsole sessions or scroll konsole window
-> issue is still there





qt5-qtbase-5.5.1-8.fc23.x86_64
kf5-plasma-5.16.0-4.fc23.x86_64
plasma-desktop-5.5.0-4.fc23.x86_64
plasma-workspace-5.5.0-3.fc23.x86_64
kwin-5.5.0-1.fc23.x86_64
konsole5-15.12.0-1.fc23.x86_64

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