Bug#1114454: gdm3: "Choose a window manager" widget is invisible on some VGA monitors.

[Van Snyder]

Package: gdm3
Version: 48.0-2
Severity: normal
Tags: a11y

Dear Maintainer,

On some VGA monitors, the display is shifted until X starts and
overrides the
monitor's "auto adjust" of the horizontal position. The effect is that
the
"select a window manager" widget at the bottom right corner of the gdm3
login
page is not visible, so a window manager cannot be selected. When X
starts it
overrides the VGA monitor's "auto adjust" of horizontal position, and
the
display is correct.

This problem should be addressed by moving the widget to the bottom
center
instead of the bottom right corner.

*** Reporter, please consider answering these questions, where
appropriate ***

   * What led up to the situation?

Boot the system in run level 5

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

Connected a different (borrowed) monitor

   * What was the outcome of this action?

Was able to select the window manager

   * What outcome did you expect instead?

That the "select a window manager" widget would be visible.


-- System Information:
Debian Release: 13.0
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500,
'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.12.41+deb13-amd64 (SMP w/32 CPU threads; PREEMPT)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages gdm3 depends on:
ii  accountsservice                             23.13.9-7
ii  adduser                                     3.152
ii  dbus [default-dbus-system-bus]              1.16.2-2
ii  dbus-bin                                    1.16.2-2
ii  dbus-daemon                                 1.16.2-2
ii  dconf-cli                                   0.40.0-5
ii  dconf-gsettings-backend                     0.40.0-5
ii  debconf [debconf-2.0]                       1.5.91
ii  gir1.2-gdm-1.0                              48.0-2
ii  gnome-session [x-session-manager]           48.0-1
ii  gnome-session-bin                           48.0-1
ii  gnome-session-common                        48.0-1
ii  gnome-session-xsession [x-session-manager]  48.0-1
ii  gnome-settings-daemon                       48.1-1
ii  gnome-shell                                 48.3-1
ii  gnome-terminal [x-terminal-emulator]        3.56.2-2
ii  gsettings-desktop-schemas                   48.0-1
ii  konsole [x-terminal-emulator]               4:25.04.2-1
ii  kwin-x11 [x-window-manager]                 4:6.3.6-1
ii  libaccountsservice0                         23.13.9-7
ii  libaudit1                                   1:4.0.2-2+b2
ii  libc6                                       2.41-12
ii  libgdk-pixbuf-2.0-0                         2.42.12+dfsg-4
ii  libgdm1                                     48.0-2
ii  libglib2.0-0t64                             2.84.3-1
ii  libglib2.0-bin                              2.84.3-1
ii  libgtk-3-0t64                               3.24.49-3
ii  libgudev-1.0-0                              238-6
ii  libjson-glib-1.0-0                          1.10.6+ds-2
ii  libkeyutils1                                1.6.3-6
ii  libpam-modules                              1.7.0-5
ii  libpam-runtime                              1.7.0-5
ii  libpam-systemd [logind]                     257.7-1
ii  libpam0g                                    1.7.0-5
ii  librsvg2-common                             2.60.0+dfsg-1
ii  libselinux1                                 3.8.1-1
ii  libsystemd0                                 257.7-1
ii  libx11-6                                    2:1.8.12-1
ii  libxau6                                     1:1.0.11-1
ii  libxcb1                                     1.17.0-2+b1
ii  libxdmcp6                                   1:1.1.5-1
ii  plasma-workspace [x-session-manager]        4:6.3.6-2
ii  polkitd                                     126-2
ii  procps                                      2:4.0.4-9
ii  systemd-sysv                                257.7-1
ii  ucf                                         3.0052
ii  x11-common                                  1:7.7+24
ii  x11-xserver-utils                           7.7+11
ii  xterm [x-terminal-emulator]                 398-1

Versions of packages gdm3 recommends:
ii  at-spi2-core                                2.56.2-1
ii  desktop-base                                13.0.3
ii  gnome-session [x-session-manager]           48.0-1
ii  gnome-session-xsession [x-session-manager]  48.0-1
ii  plasma-workspace [x-session-manager]        4:6.3.6-2
ii  x11-xkb-utils                               7.7+9
ii  xserver-xephyr                              2:21.1.16-1.3
ii  xserver-xorg                                1:7.7+24
ii  zenity                                      4.1.90-1

Versions of packages gdm3 suggests:
ii  libpam-fprintd        1.94.5-2
ii  libpam-gnome-keyring  48.0-1
pn  libpam-pkcs11         <none>
pn  libpam-sss            <none>
ii  orca                  48.1-1

-- debconf information:
* shared/default-x-display-manager: gdm3
  gdm3/daemon_name: /usr/sbin/gdm3
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://alioth-lists.debian.net/pipermail/pkg-gnome-maintainers/attachments/20250905/dfbd9a5d/attachment-0001.htm>