Bug 313754

Summary: Very slow repainting on remote connections
Product: [Applications] konsole Reporter: Denys <rtvd>
Component: generalAssignee: Konsole Developer <konsole-devel>
Status: RESOLVED UNMAINTAINED    
Severity: normal CC: a.samirh78, cpigat242, r3m1.benoit
Priority: NOR    
Version: 2.9.5   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:

Description Denys 2013-01-23 12:20:03 UTC 
When I connect to another machine remotely using a NX session (which is far faster than a normal X session), Konsole is terribly slow. It sometimes takes it a second to repaint itself. This makes using it almost impossible. I had to install gnome-terminal for that. And works very fast.

Reproducible: Always

Steps to Reproduce:
1. Log on to KDE remotely using NX (or, perhaps, normal X)
2. Launch Konsole and open it to occupy as much space as possible.
3. Try using it.
Actual Results:  
Konsole is very slow to repaint itself. You can type something on the keyboard and wait for a second for the text to appear. When the text scrolls it becomes a nightmaire.

Expected Results:  
It should be fast. Other terminal emulators are way faster.
Comment 1 Jekyll Wu 2013-01-23 16:38:37 UTC 
Try "konsole --notransparency"  to see whether that makes difference.

I have never used NX, but I don't  recall having that kind of problem when using remote X.
Comment 2 Denys 2013-01-23 20:00:54 UTC 
I am afraid it does not make a difference. The speed of repainting is as slow as without "--notransparency" flag.

When I run "find /" I can clearly see as the text in konsole is updated in waves going from top to the botton. Each such update takes about half a second.
Comment 3 Ahmad Samir 2018-03-16 20:34:10 UTC 
KDE4/konsole is no longer maintained; reopen if you can still reproduce this issue with a recent konsole version.