Bug#993608: xfce4: blank screen after login after changing resolution
Package: xfce4
Version: 4.16
Severity: normal
X-Debbugs-Cc: claude@mathr.co.uk
Dear Maintainer,
* What led up to the situation?
I installed Debian 11.0 amd64 netinst in a QEMU virtual machine.
I deselected GNOME and selected XFCE4.
On first boot, after login, I changed screen resolution to 1440x900
using XFCE4 display settings user interface.
The display was fine at the new resolution until the next time I started
the virtual machine, at which point after LightDM login the screen went
black (at the 1440x900 size).
* What exactly did you do (or not do) that was effective (or
ineffective)?
I created a new user which allowed me to log in graphically, but the
default video resolution is tiny and unsuitable for what I need the VM for.
* What outcome did you expect instead?
I expected the desktop still to work after a reboot.
Thanks for any help,
Claude
-- System Information:
Debian Release: 11.0
APT prefers stable-security
APT policy: (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 5.10.0-8-amd64 (SMP w/8 CPU threads)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages xfce4 depends on:
ii libxfce4ui-utils 4.16.0-1
ii thunar 4.16.8-1
ii xfce4-appfinder 4.16.1-1
ii xfce4-panel 4.16.2-1
ii xfce4-pulseaudio-plugin 0.4.3-1
ii xfce4-session 4.16.0-1
ii xfce4-settings 4.16.0-1
ii xfconf 4.16.0-2
ii xfdesktop4 4.16.0-1
ii xfwm4 4.16.1-1
Versions of packages xfce4 recommends:
ii desktop-base 11.0.3
ii tango-icon-theme 0.8.90-8
ii thunar-volman 4.16.0-1
ii xfce4-notifyd 0.6.2-1
ii xorg 1:7.7+22
Versions of packages xfce4 suggests:
ii xfce4-goodies 4.14.0
ii xfce4-power-manager 4.16.0-1
-- no debconf information
Xsession: X session started for claude at Fri 3 Sep 16:31:42 BST 2021
WARNING: tempfile is deprecated; consider using mktemp instead.
dbus-update-activation-environment: setting DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
dbus-update-activation-environment: setting DISPLAY=:0
dbus-update-activation-environment: setting XAUTHORITY=/home/claude/.Xauthority
localuser:claude being added to access control list
dbus-update-activation-environment: setting GTK_MODULES=gail:atk-bridge
dbus-update-activation-environment: setting QT_ACCESSIBILITY=1
/usr/bin/x-session-manager: X server already running on display :0
/usr/bin/iceauth: creating new authority file /run/user/1000/ICEauthority
xfce4-session-Message: 16:31:43.041: SSH authentication agent is already running
gpg-agent: a gpg-agent is already running - not starting a new one
** (xfce4-power-manager:802): WARNING **: 16:31:43.791: Failed to get name owner: GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Could not get owner of name 'org.xfce.PowerManager': no such name
** (xfce4-power-manager:802): WARNING **: 16:31:43.791: Failed to get name owner: GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Could not get owner of name 'org.freedesktop.PowerManagement': no such name
Xfce power manager is not running
Xfce Power Manager: Another power manager is already running
(xfce4-power-manager:802): GLib-GObject-WARNING **: 16:31:43.898: ../../../gobject/gsignal.c:2614: signal 'Changed' is invalid for instance '0x55f61b3bb0b0' of type 'GDBusProxy'
Another notification daemon is running, exiting
(xfce4-power-manager:802): xfce4-power-manager-WARNING **: 16:31:43.910: could not map keysym 1008ffa8 to keycode
** (xfce4-power-manager:802): WARNING **: 16:31:43.914: No outputs have backlight property
(xfce4-power-manager:802): xfce4-power-manager-WARNING **: 16:31:43.919: Failed to get keyboard max brightness level : GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such interface “org.freedesktop.UPower.KbdBacklight” on object at path /org/freedesktop/UPower/KbdBacklight
(xfce4-panel:790): garcon-CRITICAL **: 16:31:44.082: garcon_gtk_menu_get_desktop_actions_menu: assertion 'actions != NULL' failed
(xfce4-panel:790): garcon-CRITICAL **: 16:31:44.107: garcon_gtk_menu_get_desktop_actions_menu: assertion 'actions != NULL' failed
(xfce4-panel:790): garcon-CRITICAL **: 16:31:44.135: garcon_gtk_menu_get_desktop_actions_menu: assertion 'actions != NULL' failed
(xfce4-panel:790): garcon-CRITICAL **: 16:31:44.161: garcon_gtk_menu_get_desktop_actions_menu: assertion 'actions != NULL' failed
** (wrapper-2.0:852): WARNING **: 16:31:44.252: No outputs have backlight property
(wrapper-2.0:853): GLib-GIO-CRITICAL **: 16:31:44.287: g_file_new_for_path: assertion 'path != NULL' failed
(wrapper-2.0:853): GLib-GIO-CRITICAL **: 16:31:44.287: g_file_monitor_file: assertion 'G_IS_FILE (file)' failed
(wrapper-2.0:853): GLib-GObject-WARNING **: 16:31:44.287: invalid (NULL) pointer instance
(wrapper-2.0:853): GLib-GObject-CRITICAL **: 16:31:44.287: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(wrapper-2.0:853): Gtk-WARNING **: 16:31:44.287: Attempting to add a widget with type GtkToggleButton to a container of type XfcePanelPlugin, but the widget is already inside a container of type XfcePanelPlugin, please remove the widget from its existing container first.
(wrapper-2.0:891): Gtk-WARNING **: 16:31:44.458: Negative content width -1 (allocation 1, extents 1x1) while allocating gadget (node button, owner XfceArrowButton)
(wrapper-2.0:852): Gtk-WARNING **: 16:31:44.467: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner PowerManagerButton)
(wrapper-2.0:848): Gtk-WARNING **: 16:31:44.471: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner PulseaudioButton)
(wrapper-2.0:853): Gtk-WARNING **: 16:31:44.495: Negative content width -3 (allocation 1, extents 2x2) while allocating gadget (node button, owner GtkToggleButton)
Reply to: