bug#38346: 26.1; frame resize issues with vcxsrv/xming

bug#38346: 26.1; frame resize issues with vcxsrv/xming

[Thorsten Meyer]

From: nikolas <tmeyer@nikolas.localdomain>
To: bug-gnu-emacs@gnu.org
Subject: 26.1; frame resize issues with vcxsrv/xming
--text follows this line--

starting "emacs -Q" on vcxsrv:
  - the emacs window pops up with the usual default size and then
  immediately resizes vertically with only three usable lines remaining.
  - after that, I can resize the window to whatever I like with the mouse
  - when I open another frame with C-x 5 2, the actual new window (or
  frame in emacs terminology) has the regular size, but 80% of the window
  is black and emacs displays menu, minibuffer and everything in the
  remaining upper part. Again, when I resize the window with the mouse,
  everything is back to normal.
  - when I start emacs with the --geometry option, I can make emacs flash
  up with another frame size, but again it immediately resizes
  - when I start emacs with the -fh or the -mm option, it opens up in the
  respective size as requested

  - I get the same behaviour with vcxsrv 64.1.20.5.1 and xming 6.9.0.31
  - I get the same behaviour
    - starting emacs from windows linux subsystem running debian stable
as well
      as
    - connecting to the vcxsrv display from a separate debian testing
machine and
      starting emacs from there
    - with emacs 1:26.1+1-4 (debian testing) and 1:26.1-3.2+deb10u1
      (debian stable)

  - I only get this behaviour with emacs-gtk but not with emacs-lucid





In GNU Emacs 26.1 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.11)
  of 2019-09-09, modified by Debian built on x86-ubc-02
Windowing system distributor 'Colin Harrison', version 11.0.60900031
System Description:    Debian GNU/Linux 10 (buster)

Recent messages:
Checking 44 files in /usr/share/emacs/26.1/lisp/calc...
Checking 53 files in /usr/share/emacs/26.1/lisp/obsolete...
Checking for load-path shadows...done
mwheel-scroll: Beginning of buffer [3 times]
Auto-saving...done
mwheel-scroll: Beginning of buffer [2 times]
Mark set
Making completion list...
user-error: Beginning of history; no preceding item
Making completion list... [2 times]

Configured using:
  'configure --build x86_64-linux-gnu --prefix=/usr
  --sharedstatedir=/var/lib --libexecdir=/usr/lib
  --localstatedir=/var/lib --infodir=/usr/share/info
  --mandir=/usr/share/man --enable-libsystemd --with-pop=yes
  --enable-locallisppath=/etc/emacs:/usr/local/share/emacs/26.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/26.1/site-lisp:/usr/share/emacs/site-lisp
  --with-sound=alsa --without-gconf --with-mailutils --build
  x86_64-linux-gnu --prefix=/usr --sharedstatedir=/var/lib
  --libexecdir=/usr/lib --localstatedir=/var/lib
  --infodir=/usr/share/info --mandir=/usr/share/man --enable-libsystemd
  --with-pop=yes
  --enable-locallisppath=/etc/emacs:/usr/local/share/emacs/26.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/26.1/site-lisp:/usr/share/emacs/site-lisp
  --with-sound=alsa --without-gconf --with-mailutils --with-x=yes
  --with-x-toolkit=gtk3 --with-toolkit-scroll-bars 'CFLAGS=-g -O2
  -fdebug-prefix-map=/build/emacs-iJm1BQ/emacs-26.1+1=.
-fstack-protector-strong
  -Wformat -Werror=format-security -Wall' 'CPPFLAGS=-Wdate-time
  -D_FORTIFY_SOURCE=2' LDFLAGS=-Wl,-z,relro'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GSETTINGS NOTIFY
ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 THREADS LIBSYSTEMD LCMS2

Important settings:
   value of $LANG: en_US.UTF-8
   locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
   tooltip-mode: t
   global-eldoc-mode: t
   eldoc-mode: t
   electric-indent-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
   auto-composition-mode: t
   auto-encryption-mode: t
   auto-compression-mode: t
   line-number-mode: t
   transient-mark-mode: t

Load-path shadows:
None found.

Features:
(help-mode pp shadow sort mail-extr emacsbug message rmc puny seq
byte-opt gv bytecomp byte-compile cconv cl-loaddefs cl-lib dired
dired-loaddefs format-spec rfc822 mml easymenu mml-sec password-cache
epa derived epg epg-config gnus-util rmail rmail-loaddefs mm-decode
mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader
sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils
elec-pair time-date mule-util tooltip eldoc electric uniquify ediff-hook
vc-hooks lisp-float-type mwheel term/x-win x-win term/common-win x-dnd
tool-bar dnd fontset image regexp-opt fringe tabulated-list replace
newcomment text-mode elisp-mode lisp-mode prog-mode register page
menu-bar rfn-eshadow isearch timer select scroll-bar mouse jit-lock
font-lock syntax facemenu font-core term/tty-colors frame cl-generic
cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese composite charscript charprop
case-table epa-hook jka-cmpr-hook help simple abbrev obarray minibuffer
cl-preloaded nadvice loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote dbusbind inotify lcms2
dynamic-setting system-font-setting font-render-setting move-toolbar gtk
x-toolkit x multi-tty make-network-process emacs)

Memory information:
((conses 16 96884 12650)
  (symbols 48 20541 3)
  (miscs 40 57 218)
  (strings 32 28736 1024)
  (string-bytes 1 755346)
  (vectors 16 14832)
  (vector-slots 8 498948 11294)
  (floats 8 57 374)
  (intervals 56 298 9)
  (buffers 992 14))