GNU bug report logs - #8822
23.1; Extended desktop garbles text

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Krishna Karthik <krishna.k <at> imaginea.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 23.1; Extended desktop garbles text
Date: Wed, 08 Jun 2011 16:15:54 +0530

When I connect another monitor and extend the desktop onto it text in
emacs has display problems.  The text appears to be overlapped.  Each
character also appears just before itself.  When the cursor is blinking
the character before it also blinks. This is temporarily corrected with
C-l. 

This is not reproducible if the extended monitor is removed and emacs
started again.

Thank you.


In GNU Emacs 23.1.1 (i686-pc-linux-gnu, GTK+ Version 2.22.0)
 of 2011-03-04 on roseapple, 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_IN
  value of $XMODIFIERS: nil
  locale-coding-system: iso-latin-1-unix
  default-enable-multibyte-characters: t

Major mode: Fundamental

Minor modes in effect:
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  blink-cursor-mode: t
  global-auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
M-x r e p o <tab> r t <tab> <return>

Recent messages:
Loading /usr/share/emacs/site-lisp/haskell-mode/haskell-site-file.el
(source)...done
Loading /etc/emacs/site-start.d/50haskell-mode.el (source)...done
Loading /etc/emacs/site-start.d/50html-helper-mode.el (source)...done
Loading /etc/emacs/site-start.d/50org-mode.el (source)...done
Loading /etc/emacs/site-start.d/50psvn.el (source)...done
Loading /usr/share/emacs23/site-lisp/emacs-goodies-el/color-theme-library.el (source)...done
Loading /usr/share/emacs23/site-lisp/emacs-goodies-el/color-theme-library.elc...done
Loading /home/karthik/.emacs.d/site-lisp/themes/railscasts.el
(source)...done
For information about GNU Emacs and the GNU system, type C-h C-a.
Making completion list...

Message #8 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Krishna Karthik <krishna.k <at> imaginea.com>
To: bug-gnu-emacs <at> gnu.org
Subject: Re: 23.1; Extended desktop garbles text
Date: Wed, 08 Jun 2011 17:09:33 +0530

[Message part 1 (text/plain, inline)]

Hi, attached the image of the garbled text (maybe it helps).

On Wed, 2011-06-08 at 16:15 +0530, Krishna Karthik wrote:
> When I connect another monitor and extend the desktop onto it text in
> emacs has display problems.  The text appears to be overlapped.  Each
> character also appears just before itself.  When the cursor is blinking
> the character before it also blinks. This is temporarily corrected with
> C-l. 
> 
> This is not reproducible if the extended monitor is removed and emacs
> started again.
> 
> Thank you.
> 
> 
> In GNU Emacs 23.1.1 (i686-pc-linux-gnu, GTK+ Version 2.22.0)
>  of 2011-03-04 on roseapple, 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_IN
>   value of $XMODIFIERS: nil
>   locale-coding-system: iso-latin-1-unix
>   default-enable-multibyte-characters: t
> 
> Major mode: Fundamental
> 
> Minor modes in effect:
>   tooltip-mode: t
>   mouse-wheel-mode: t
>   menu-bar-mode: t
>   file-name-shadow-mode: t
>   global-font-lock-mode: t
>   blink-cursor-mode: t
>   global-auto-composition-mode: t
>   auto-encryption-mode: t
>   auto-compression-mode: t
>   line-number-mode: t
>   transient-mark-mode: t
> 
> Recent input:
> M-x r e p o <tab> r t <tab> <return>
> 
> Recent messages:
> Loading /usr/share/emacs/site-lisp/haskell-mode/haskell-site-file.el
> (source)...done
> Loading /etc/emacs/site-start.d/50haskell-mode.el (source)...done
> Loading /etc/emacs/site-start.d/50html-helper-mode.el (source)...done
> Loading /etc/emacs/site-start.d/50org-mode.el (source)...done
> Loading /etc/emacs/site-start.d/50psvn.el (source)...done
> Loading /usr/share/emacs23/site-lisp/emacs-goodies-el/color-theme-library.el (source)...done
> Loading /usr/share/emacs23/site-lisp/emacs-goodies-el/color-theme-library.elc...done
> Loading /home/karthik/.emacs.d/site-lisp/themes/railscasts.el
> (source)...done
> For information about GNU Emacs and the GNU system, type C-h C-a.
> Making completion list...
> 

[emacs-display-text-overlap.png (image/png, attachment)]

Message #11 received at 8822 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Krishna Karthik <krishna.k <at> imaginea.com>
Cc: 8822 <at> debbugs.gnu.org
Subject: Re: bug#8822: 23.1; Extended desktop garbles text
Date: Mon, 20 Jun 2011 17:07:35 -0400

> This is not reproducible if the extended monitor is removed and Emacs
> started again.

Sounds like a bug in the X11 server driver for your video card.
Try to change the driver's config (e.g. disable accelerations) to see if
it works around the problem.


        Stefan

Message #14 received at 8822 <at> debbugs.gnu.org (full text, mbox):

From: Krishna Karthik <krishna.k <at> imaginea.com>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 8822 <at> debbugs.gnu.org
Subject: Re: bug#8822: 23.1; Extended desktop garbles text
Date: Fri, 24 Jun 2011 10:32:32 +0530

Used 'driconf' to disable accelerations.  The problem still persists.
Thank you.

On Mon, 2011-06-20 at 17:07 -0400, Stefan Monnier wrote:
> > This is not reproducible if the extended monitor is removed and Emacs
> > started again.
> 
> Sounds like a bug in the X11 server driver for your video card.
> Try to change the driver's config (e.g. disable accelerations) to see if
> it works around the problem.
> 
> 
>         Stefan

Message #17 received at 8822 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefan <at> marxist.se>
To: Krishna Karthik <krishna.k <at> imaginea.com>
Cc: 8822 <at> debbugs.gnu.org, Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: Re: bug#8822: 23.1; Extended desktop garbles text
Date: Mon, 14 Oct 2019 17:52:32 +0200

Krishna Karthik <krishna.k <at> imaginea.com> writes:

> Used 'driconf' to disable accelerations.  The problem still persists.
> Thank you.
>
> On Mon, 2011-06-20 at 17:07 -0400, Stefan Monnier wrote:
>> > This is not reproducible if the extended monitor is removed and Emacs
>> > started again.
>>
>> Sounds like a bug in the X11 server driver for your video card.
>> Try to change the driver's config (e.g. disable accelerations) to see if
>> it works around the problem.

That was 8 years ago, and the suspected culprit was not Emacs.  Are you
still seeing this on a modern version of Emacs?

Best regards,
Stefan Kangas

Message #22 received at 8822-done <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefan <at> marxist.se>
To: Krishna Karthik <krishna.k <at> imaginea.com>
Cc: Stefan Monnier <monnier <at> iro.umontreal.ca>, 8822-done <at> debbugs.gnu.org
Subject: Re: bug#8822: 23.1; Extended desktop garbles text
Date: Mon, 14 Oct 2019 17:53:35 +0200

Stefan Kangas <stefan <at> marxist.se> writes:
> That was 8 years ago, and the suspected culprit was not Emacs.  Are you
> still seeing this on a modern version of Emacs?

The e-mail bounced, so I think it's unlikely that we'll make any
progress here and I'm closing the bug report.

Best regards,
Stefan Kangas

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