Package: nedit
Version: 1:5.6~cvs20081
I would like to report a strange behavior of nedit in Debian squeeze amd64.
Some information on my system: I just got a new Lenovo ThinkPad T510 on
which I installed Debian squeeze amd64 (as network driver e1000e of lenny
as provided with netinst did not work, a known issue with this ThinkPad).
I use the standard kernel that comes with squeeze,
Linux mupfel 2.6.32-5-amd64 #1 SMP Sat Oct 30 14:18:21 UTC 2010 x86_64 GNU/Linux
and the standard libc (2.11.2-7, as it comes with squeeze).
In the BIOS, I selected the Intel Integrated Graphics controller
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated
Graphics Controller (rev 02)
and I run xserver-xorg-video-intel (2:2.12.0, as it comes with squeeze) at
1920x1080 (the kernel module is i915). I use /etc/X11/xorg.conf (a bit
old-fashioned, I know, but I migrated that from my previous ThinkPad), I
guess that the relevant part is
Section "Device"
Identifier "Intel Integrated Graphics"
Driver "intel"
Option "VideoOverlay" "off"
Option "OpenGLOverlay" "on"
BusID "PCI:0:2:0"
EndSection
Section "Monitor"
Identifier "Generic Monitor"
Option "DPMS" "true"
EndSection
Section "Screen"
Identifier "1920x1080"
Device "Intel Integrated Graphics"
Monitor "Generic Monitor"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1920x1080"
EndSubSection
EndSection
I use fvwm1 (1.24r-55, as it comes with squeeze) as window manager (again,
quite old-fashioned, I know, but I am very happy with this simple window
manager).
My bug report is on nedit (1:5.6~cvs20081, as it comes with squeeze), and
the bug is fully reproducible doing the following: I start nedit that so it
opens an empty window. Using the menu `File > New' I open a second nedit
window. Now, I move one nedit window over the other nedit window using the
mouse, and lines appear in the upper nedit window (one pixel thick), first
at the location of the inner border of the lower nedit window (left, bottom,
and right) but then move with the moving upper window. The lines remain in
the upper window until it gets explicitly redrawn. I can also get these
lines in windows of several other programs (for instance xterm) when I move
these windows over a lower-lying nedit window. Windows of most other
programs (for instance iceweasel) do not get these lines, which is probably
due to their different window refreshing strategy. It seems that something
goes wrong in clipping the (re)drawing of the nedit window to the correct
area. From the grey color of the lines I guess that the problem is not the
inner part of the window (which is white in my case) but the frame around it
(which is indeed grey in my case).
I have tried the same with a couple of other programs to exclude that it is
a bug related to X and not to nedit, but I managed to observe the described
effect only when an nedit window is the lower window, so I guessed that it
is related to nedit.
I am somewhat unsure what further information might be helpful to trace this
issue (for instance a screen snapshot), but I will be glad to provide any
information needed.
Many thanks, and best regards,
Markus Porto
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