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[Launchpad Bug Tracker <527006@xxxxxxxxxxxxxxxxxx>]

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I mostly notice this bug in Terminal because that's what I use most of
the time but I have also seen it in Skype.  I think the same bug happens
in Firefox and Chrome but because the cursor looks different (and I-beam
rather than a solid square) it doesn't cause a major problem.  Firefox
and Chrome also seem to redraw more often than Terminal which removes
the problem from whatever text I have already written.

The problem is that when I am typing, the cursor covers the letters that
I type so that all I can see is a row of squares.  Occasionally, what
stays on the screen is a space rather than a filled-in square but mostly
it is filled-in squares.

Clicking to another application and then back to Terminal will cause a
redraw which draws all characters correctly.  Anything else that causes
the screen to redraw such as hitting tab twice or hitting enter has the
same effect,

It's not always the same characters and it's not very consistent.  Some
commands I type will only have one blacked out character, others may
have the entire line blacked out.

Using the arrow keys to move the cursor back over the text causes the
same problem with the exception that the characters are drawn inverted
(black-on-white) or normally (white-on-black) rather than a solid
square.  A similar effect happens when selecting text with the mouse.
Selecting text by dragging and then deselecting by dragging back will
leave inverted characters.  Once the screen has been redrawn and all
text looks fine, selecting with the mouse works as normal but moving the
cursor using the arrow keys causes the problem again.

The problem only happens very rarely when using the mouse to select text
inside vi and I have not managed to cause it with the arrow keys at all
but does happen both inside and outside screen sessions.

I have screenshots available of the effect I am seeing.

I have no idea of what package to file this under because I am seeing
the problem in several applications and I haven't found anything to
indicate where the problem actually is.

I have the non-free Nvidia drivers installed.  I don't know if they are
related to the problem but it's worth mentioning.

I have a laptop with an attached monitor.  (Not mirrored.)  The problem
occurs on both monitors.

ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 9.04
NonfreeKernelModules: wl nvidia
Package: xorg 1:7.4~5ubuntu18
ProcEnviron:
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcVersion: Linux version 2.6.28-15-generic (buildd@yellow) (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #52-Ubuntu SMP Wed Sep 9 10:48:52 UTC 2009
SourcePackage: xorg
Uname: Linux 2.6.28-15-generic x86_64

** Affects: nvidia-graphics-drivers (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug
-- 
Cursor left covering letters when typing
https://bugs.launchpad.net/bugs/527006
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