Problems with screen management

[Bmarsh]

Here is what I reported on the bug..  and it shows exactly what I am seeing:





Public bug reported: 

Konsole screen is corrupted .. i.e. not showing true contents of a 
file. Observed in nano and the THE editors and possibly in vi. 

Given the file: 

test of screen problems in Bionic beta 2  
03/09/18 xxxxxxxxx yyyyyyyyy zzzzzzzzz qqqqqqq 
03/23/18 qqqqqqqqq rrrrrrrrr sssssssss ttttttt 
03/29/18 aaaaaaaaa bbbbbbbbb ccccccccc ddddddd 
04/06/18  
04/13/18 ddddddddd eeeeeeeee fffffff 

the first screen shown in nano or THE will be: 

test of screen problems in Bionic beta 2  
03/09/18 x y z q 
03/23/18 q r s t 
03/29/18 a b c d 
04/06/18  
04/13/18 d e f 


This occurs in Konsole under Kubuntu 18.04 beta 2 in xfce4 as well as Plasma. 

Description: Ubuntu Bionic Beaver (development branch) 
Release: 18.04 

   


 


From: Bill Vance <kbun at xpresso.seaslug.org>
 Subject: Re: Problems with screen management
 Date: 4/15/18 2:07 PM
 To: Kubuntu user technical support <kubuntu-users at lists.ubuntu.com>
 

 
 
 
I'm seeing a very similar problem with Kubuntu 16.04 amd64. 
 
Let me go through the ordering, maybe there's a clue here. 
Whenever I upgrade to a new OS level, I usually wind up 
screwing something up, and having to re-install 3, or 4 times 
in order to fix the problem(s) in the unfamiliar new territory. 
 
Moving up to 16.04 from 12.04, I noted the following problem(s). 
Right after installing, eveything seemed to be working ok while 
doing some initial setup stuff.  Then, after doing the usual update/ 
upgrade, weird stuff such as you describe started happening.  The 
last time, the weird stuff didn't wait for the update/upgrade, but 
started happening immediately. 
 
In the Bash shell, and the editors as well, the cursor doesn't make 
it all the way to the right side of the screen.  In the shell it 
mostly drops down to the next line down.  In nano, it goes 
behind the, "$", character, or to the other side of it. 
 
In the shell, the command line should look something like: 
 
# abcdefg -12345X 
 
With the cursor at the, "X", point of the line.  Instead, it looks 
something like: 
 
# abcdefg -12345     X 
 
If I cursor left, to fix a typo, it then looks something like this: 
 
# abcdefg -12     X345 
 
Also, there are missing characters.  These seem to be mostly on 
the end.  For instance, two usernames are, "mml", and, "mmr". 
 
Doing a, "ls", of the /home dir, shows two usernames as being, 
"mm".  I've noticed this elsewhere, too, but mainly here.  The names  
haven't changed, they just aren't being displayed properly. 
 
I hope someone knows how to fix this. 
 
Bill 
 
 
On Sat, 14 Apr 2018, Bruce Marshall wrote: 
 
> I've been running Kubuntu/xfce on 3 Amd64 machines and have run 
> into serious problems with screen management in editors.  Moving 
> the cursor into the screen display will often cause the data on 
> that display to move around on its own or to become corrupted. 
>  
> I have seen this in the THE editor, as well as nano and vi.   It 
> makes the editors unusable because once data moves around, you 
> cannot treat the data as being correct. 
>  
> This is while running Kubuntu Beta 2 on an AMD64 machine.   Will 
> try to test it on an i386 machine as well. 
>  
> A very serious problem for me.  
>  
>  
> 

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