[Konsole-devel] [Bug 236405] New: Konsole: session management and long output breaks line scrolling

[RalphB]

https://bugs.kde.org/show_bug.cgi?id=236405

           Summary: Konsole: session management and long output breaks
                    line scrolling
           Product: konsole
           Version: 2.4.2
          Platform: unspecified
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: konsole-devel at kde.org
        ReportedBy: pub at endlos.net


Version:           2.4.2 (using 4.4.2 (KDE 4.4.2), Kubuntu packages)
Compiler:          cc
OS:                Linux (x86_64) release 2.6.32-21-generic

Line scrolling often breaks in Konsole.  As a result, (1) Konsole thinks that
the terminal window is smaller than it actually is and uses the upper part of
the window only, and (2) when the cursor is at the bottom of the windows, all
further output is printed in the last line of the terminal window, and previous
lines are not scrolled up.

To reproduce, create a Konsole window of 80x40 chars and have that restored at
login (this step seems important).   Output some longer text file, e.g., the
output of dmesg will do.  Note that Konsole still works as expected.  Now start
aptitude, or start vi.  From now on, the behavior is broken.

Note that I couldn't reproduce this behavior with a newly opened Konsole
window, so I suspect that session management is somehow involved.  Resizing the
window and/or showing/disabling the menu bar also seems to fix the issue.

Bug 220050 seems to related, if not the same.

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