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Re: Emacs+Ansi-Term Display Glitches


From: Geoff Ferrari
Subject: Re: Emacs+Ansi-Term Display Glitches
Date: Mon, 02 Jan 2012 16:55:55 +0000
User-agent: Mutt/1.5.21 (2010-09-15)

Hi Vladimir,

Sincere thanks for your suggestions. I checked and the configuration value on my
machine for /apps/metacity/general/compositing_manager was already set
to false. Changing to true didn't help either.

Incidentally, my usual window manager is stumpwm and I get the display
glitches there, too, so it might not be a problem with metacity in
particular.

One thing that helps the first glitch (the jumpiness when one has a full
screen of output) is switching from char-mode to line-mode. There's
still some jumpiness, but it seems reduced.

Best wishes,

Geoff

On Mon, Jan 02, 2012 at 07:45:24PM +0300, Vladimir Murzin wrote:
> Hi Geoff
> 
> In my case (Gnome2+Metacity ) the following was enough:
> 
> $gconftool-2 --type boolean --set
> /apps/metacity/general/compositing_manager false
> 
> My environment:
> GNU Emacs 23.3.3
> Gnome 2.32.1
> 
> On Mon, Jan 2, 2012 at 8:33 PM, Geoff Ferrari <address@hidden> wrote:
> > I tried disabling composite manager by adding the following to 
> > /etc/X11/xorg.conf
> >
> > Section "Extensions"
> >    Option "Composite" "Disable"
> > EndSection
> >
> > But it had no effect on the display glitches I mentioned. Any other
> > suggestions?
> >
> > Maybe this bug will be solved in Emacs 24...
> >
> > Geoffrey
> >
> >
> > On Tue, Dec 27, 2011 at 02:51:51AM +0000, Vladimir Murzin wrote:
> >> Hi!
> >>
> >> Have you tried disabling composite manager?
> >>
> >> I met similar problem several months ago. Turning of composite feature of 
> >> Metacity solved this problem for me.
> >> Best wishes, Vladimir Murzin
> >>
> >> -----Original Message-----
> >> From: Geoff Ferrari <address@hidden>
> >> Sender: address@hidden: Mon, 26 Dec 2011 15:30:48
> >> To: <address@hidden>
> >> Cc: <address@hidden>
> >> Subject: Emacs+Ansi-Term Display Glitches
> >>
> >> Hi,
> >>
> >> I'm experiencing some display glitches when using ansi-term to access a
> >> shell under the X11 version of emacs. There seem to be two separate
> >> glitches, and they're a little hard to describe so I've included a link
> >> to a video of the problem.
> >>
> >> FIRST GLITCH
> >>
> >> When I reach a full screen of text under ansi-term (i.e. once I've typed
> >> in a few commands and the history of these commands fills the screen, so
> >> that the input line is now at the bottom of the screen), the whole
> >> screen seems to either flash or jump every time I type a new character.
> >>
> >> SECOND GLITCH
> >>
> >> After I've either filled the screen using my own commands, or after I've
> >> used a programme such as top or mutt which takes over the whole screen,
> >> then the two lines at the top of the screen seem to persist. Running the
> >> "clear" command does not clear them, but they are cleared if I run the
> >> "reset" command.
> >>
> >> You can see a download a video (7.6MB) of these glitches from:
> >> http://cloud.geoffreyferrari.com/apps/files_sharing/get.php?token=db8e2a6726e03d1816548e17447a1df626215ac4
> >>
> >> Both of these problems occur on both the latest 64-bit versions of ubuntu 
> >> and
> >> debian wheezy. With the terminal version of emacs I get the second
> >> problem (lines being left at the top of the screen) but not the first
> >> (no display jumpiness).
> >>
> >> My version of emacs as reported in Ubuntu 11.10 is
> >>
> >> "GNU Emacs 23.3.1 (x86_64-pc-linux-gnu, GTK+ Version 2.24.5)
> >>  of 2011-08-14 on allspice, modified by Debian"
> >>
> >> I wonder if there's anything I can do to remove these annoying glitches,
> >> of whether they are a bug that should be reported.
> >>
> >> Geoff
> >>
> >>
> >>
> >
> > --
> > Geoffrey Ferrari
> > Lecturer in Philosophy
> > Lady Margaret Hall
> >
> > Office: 01865 [2]74381
> > Mobile: 07989 851364
> > web: geoffreyferrari.com

-- 
Geoffrey Ferrari
Lecturer in Philosophy
Lady Margaret Hall

Office: 01865 [2]74381
Mobile: 07989 851364
web: geoffreyferrari.com




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