Package: emacs;
Reported by: David McArthur <david <at> davidmcarthur.com>
Date: Fri, 28 Jan 2011 17:19:02 UTC
Severity: normal
Found in version 23.1
Done: Stefan Kangas <stefan <at> marxist.se>
Bug is archived. No further changes may be made.
Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
From: David McArthur <david <at> davidmcarthur.com> To: bug-gnu-emacs <at> gnu.org Subject: 23.1; overprinting / cursor misalignment after certain characters Date: Fri, 28 Jan 2011 10:41:31 -0500
Upon typing certain characters in any buffer (including the minibuffer)
the cursor becomes misaligned and text is overprinted. These characters
are: AKkRrTVWwXxYyZ. This problem only occurs when I have my second
monitor enabled.
The cursor is a blinking black box such that when the cursor is on top
of text, the text is printed in inverse (off-white). What happens after
typing one of AKkRrTVWwXxYyZ is that the black box is moved to the next
position, but the character I just typed blinks as though the cursor
were still on top of it. The next letter I type then appears twice:
both in the correct position, and also overprinted on top of the problem
character to the left. Also, the problem character is then re-printed
one position to the left of where I typed it, overprinting on the
character before it. Further typing appears normally, as long as the
characters are not any of AKkRrTVWwXxYyZ.
For example, if I type "text" weird behavior starts after I type the
lowercase "x". What I see before I type the second "t" is "tex" with
the blinking black box to the right of x, but x is also blinking
(alternating black and off-white). After typing the second "t", what I
see is "t#*t" where # is "x" printed on top of "e" and * is "t" printed
on top of "x". If I move the cursor away and type C-l the text is
redrawn correctly, but if I move the cursor back over the problematic
characters, the overprinting reoccurs.
This is on my laptop running Ubuntu Maverick. The problem occurs when I
have my external monitor enabled (regardless of which monitor the emacs
window is on). When the external monitor is disabled, the problem does
not occur.
Here is a snippet from lspci -v
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS,
943/940GML Express Integrated Graphics Controller (rev 03) (prog-if 00
[VGA controller])
Subsystem: Sony Corporation Device 81e6
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at dc200000 (32-bit, non-prefetchable) [size=512K]
I/O ports at 1800 [size=8]
Memory at c0000000 (32-bit, prefetchable) [size=256M]
Memory at dc300000 (32-bit, non-prefetchable) [size=256K]
Expansion ROM at <unassigned> [disabled]
Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Kernel driver in use: i915
Kernel modules: i915
Here is the info from M-x report-emacs-bug
In GNU Emacs 23.1.1 (i686-pc-linux-gnu, GTK+ Version 2.22.0)
of 2010-11-26 on vernadsky, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.10900000
configured using `configure '--build=i686-linux-gnu'
'--host=i686-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib'
'--libexecdir=/usr/lib' '--localstatedir=/var/lib'
'--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-pop=yes'
'--enable-locallisppath=/etc/emacs23:/etc/emacs:/usr/local/share/emacs/23.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.1/site-lisp:/usr/share/emacs/site-lisp:/usr/share/emacs/23.1/leim'
'--with-x=yes' '--with-x-toolkit=gtk' '--with-toolkit-scroll-bars'
'build_alias=i686-linux-gnu' 'host_alias=i686-linux-gnu'
'CFLAGS=-DDEBIAN -g -O2' 'LDFLAGS=-g' 'CPPFLAGS=''
Important settings:
value of $LC_ALL: nil
value of $LC_COLLATE: nil
value of $LC_CTYPE: nil
value of $LC_MESSAGES: nil
value of $LC_MONETARY: nil
value of $LC_NUMERIC: nil
value of $LC_TIME: nil
value of $LANG: en_US.utf8
value of $XMODIFIERS: nil
locale-coding-system: utf-8-unix
default-enable-multibyte-characters: t
Major mode: Outline
Minor modes in effect:
goto-address-mode: t
tooltip-mode: t
tool-bar-mode: t
mouse-wheel-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
global-auto-composition-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t
view-mode: t
Recent input:
r <return> s t u v w <return> x <return> y <return>
z <up> <down> <down> <return> <return> A K R T V W
X Y Z k r w x y <up> <right> C-l C-k C-/ <down> <left>
<left> <left> <left> <left> <left> <left> <left> <left>
<left> <left> <left> <left> <left> <left> <left> <left>
<left> <down> <down> <right> <right> <right> k <right>
r <right> <right> <right> w <right> x <right> y <right>
C-k C-l <up> C-l <down> <down> <down> <return> <return>
C-h C-p C-s c u r s o <right> <left> <left> <left>
<left> <left> <left> <left> <left> <down> <right> <right>
<down> <up> <left> <left> <left> <left> <right> <right>
<right> <right> <right> <left> <left> <left> <right>
<right> <right> <right> <right> <right> <right> <right>
<right> <right> <right> <right> <right> <right> <right>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> C-s C-s C-s <down> <down> <down> <down>
<up> <up> C-x b <return> <up> <up> <right> <right>
<right> <right> <right> <right> <down> C-x b <return>
C-l <up> <up> <up> <up> <up> <up> <up> <up> <up> <up>
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up>
<up> <up> <up> <next> <prior> C-s C-s <down> <up> <up>
<up> <up> <up> <up> C-s C-s <up> <up> <up> <up> <up>
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up>
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up>
<up> <up> <up> C-s C-s C-s C-s C-s C-s <down> <down>
<down> <down> <up> <up> <up> <up> <up> <up> C-s C-s
C-s C-s C-s C-s C-s C-s C-s C-s M-x r e p o r t e m
a c s <backspace> <backspace> <backspace> <backspace>
<backspace> SPC e m a c s <tab> <return>
Recent messages:
Loading /var/cache/dictionaries-common/emacsen-ispell-default.el
(source)...done
Loading debian-ispell...done
Loading /var/cache/dictionaries-common/emacsen-ispell-dicts.el
(source)...done
Loading /etc/emacs/site-start.d/50dictionaries-common.el (source)...done
For information about GNU Emacs and the GNU system, type C-h C-a.
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Note: file is write protected
View mode: type C-h for help, h for commands, q to quit.
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/usr/bin/mail is not an executable. Setting mail-interactive to t.
--
David McArthur
david <at> davidmcarthur.com
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997,2003 nCipher Corporation Ltd,
1994-97 Ian Jackson.