Arch Linux

killajoe

Member

From: Berlin Planet Earth

Registered: 2007-07-04

Posts: 168

Website

[SOLVED] Gnome - GDM change background image brake GDM

try to change background image on following the WIKI entry here https://wiki.archlinux.org/index.php/GD … ound_image
But result was a black screen with cursor and GDM does not show up at all...
I do this a lot of times before and it always worked for me.#

May there is some change in the binary that does not fit with the process?

Someone try this and get the same or is it me

Last edited by killajoe (2017-06-03 09:47:57)

---

Cancel me not -- for what then shall remain?
Abscissas, some mantissas, modules, modes, A root or two, a torus and a node:
The inverse of my verse, a null domain.
-- Stanislaw Lem, The Cyberiad

loadlover

Member

Registered: 2017-05-10

Posts: 103

Re: [SOLVED] Gnome - GDM change background image brake GDM

Hi,

I did this too just recently. Worked for me. Maybe I can help if you tell me a bit about your process.

Loady

killajoe

Member

From: Berlin Planet Earth

Registered: 2007-07-04

Posts: 168

Website

Re: [SOLVED] Gnome - GDM change background image brake GDM

i just follow exact what the wiki say, but after rebnooting gdm does not start it only show the cursor on black screen...

here i do:

#lockDialogGroup {
  background: #2e3436 url(background.png);
  background-size: 1920px 1080px;
  background-repeat: no-repeat;
}

the picture is that size...

I do not find any logs to that gdm failing... may you can hint me on this?

Last edited by killajoe (2017-06-03 09:43:36)

---

Cancel me not -- for what then shall remain?
Abscissas, some mantissas, modules, modes, A root or two, a torus and a node:
The inverse of my verse, a null domain.
-- Stanislaw Lem, The Cyberiad

killajoe

Member

From: Berlin Planet Earth

Registered: 2007-07-04

Posts: 168

Website

Re: [SOLVED] Gnome - GDM change background image brake GDM

https://bbs.archlinux.org/viewtopic.php?id=197036
last entry also say it does not work ....

I solved by using this:

#lockDialogGroup {
  background: #2e3436 url(background.png));
  background-size: cover;
  background-repeat: no-repeat;
  border:solid transparent 1px;
}

I do not know wich of the two options push GDM to work with the background...

Last edited by killajoe (2017-06-03 09:48:35)

---

Cancel me not -- for what then shall remain?
Abscissas, some mantissas, modules, modes, A root or two, a torus and a node:
The inverse of my verse, a null domain.
-- Stanislaw Lem, The Cyberiad

loadlover

Member

Registered: 2017-05-10

Posts: 103

Re: [SOLVED] Gnome - GDM change background image brake GDM

I made a flat black background in my laptop's native FHD resolution. It's a basic .png without even compression (I plan on changing this). So the entry in gnome-shell.css is just:

#lockDialogGroup {
  background: #2e3436 url(black1920x1080.png);
  background-size: 1920px 1080px;
  background-repeat: no-repeat; }

You can also use the following script to further automate the process outlined in the ArchWiki.

Call it login-background.sh and invoke it using:

# IMAGE=~/black1920x1080.png sh login-background.sh

WORKDIR=~/tmp/gdm-login-background
GST=/usr/share/gnome-shell/gnome-shell-theme.gresource
GSTRES=$(basename $GST)

mkdir -p $WORKDIR
cd $WORKDIR
mkdir theme

for r in `gresource list $GST`; do
  gresource extract $GST $r >$WORKDIR$(echo $r | sed -e 's/^\/org\/gnome\/shell\//\//g')
done

cd theme
cp "$IMAGE" ./

echo "
#lockDialogGroup {
  background: #2e3436 url(resource:///org/gnome/shell/theme/$(basename $IMAGE));
  background-size: cover;
  background-repeat: no-repeat;
}" >>gnome-shell.css

echo '<?xml version="1.0" encoding="UTF-8"?>
<gresources>
  <gresource prefix="/org/gnome/shell/theme">' >"${GSTRES}.xml"
for r in `ls *.*`; do
  echo "    <file>$r</file>" >>"${GSTRES}.xml"
done
echo '  </gresource>
</gresources>' >>"${GSTRES}.xml"

glib-compile-resources "${GSTRES}.xml"

sudo mv "/usr/share/gnome-shell/$GSTRES" "/usr/share/gnome-shell/${GSTRES}.backup"
sudo mv "$GSTRES" /usr/share/gnome-shell/

rm -r $WORKDIR

if [ "$CREATED_TMP" = "1" ]; then
  rm -r ~/tmp
fi

Last edited by loadlover (2017-06-03 11:39:38)