[SOLVED] How to change the login screen Fedora 15

[Socky]

Hello,

I've tried to change the log-in screen on Fedora 15 (gnome3) to have a custom background, however none of the guides I've found have worked - I'm now left with a blue background with no image. They all follow the same instructions as this guide. (I did change the address and PID to my own ones, although the PID was always increasing everytime I typed it)

If I type this into the terminal logged in as my user I just get my desktop background changing, although I'm assuming this is correct.

Any ideas what I can do to solve this problem?
Thank you!

[m1boli]

Assuming you are using gdm greeter, try this:

sudo -u gdm dbus-launch gnome-control-center

It will launch the gnome-control-center application, running out of the gdm account.
Nobody ever logs in as 'gdm' personally. But your gdm greeter runs out of this
account and the background image is the account's desktop wallpaper.

Now follow the menus to change the desktop background..

I think it is a good idea to put your background image in /usr/share/backgrounds/
(or /usr/local/share/backgrounds/), where these backgrounds are stored, and
select it from there.

[Socky]

I can't do that, I get this every time:

[tim@tim-asus ~]$ su -
Password:
[root@tim-asus ~]# gdm dbus-launch gnome-control-center

** (gdm-binary:3134): WARNING **: Failed to acquire org.gnome.DisplayManager

** (gdm-binary:3134): WARNING **: Could not acquire name; bailing out
[root@tim-asus ~]# gdm

** (gdm-binary:3139): WARNING **: Failed to acquire org.gnome.DisplayManager

** (gdm-binary:3139): WARNING **: Could not acquire name; bailing out

I've tried searching google for help, but I can't seem to see anything :/

[m1boli]

Here is an explanation:

sudo lets you execute a command as if you had logged into a different user account.

The -u option says which account, in this case the account is gdm

dbus-launch is the command that sudo is executing for you in the gdm account

gnome-control-center is a parameter you are giving to dbus-launch, it is another program that will be run (also in the gdm account).

All together, you type ONE command line just like this:

 sudo -u gdm dbus-launch gnome-control-center

There is another issue: that gnome-control-center might not be able to access your X windows. In that case here is what I suggest:

a) log in as root
b) type xhost + (command xhost, argument +)
c) type the command line from above

[mightymouse2045]

Originally Posted by m1boli

Here is an explanation:

sudo lets you execute a command as if you had logged into a different user account.

The -u option says which account, in this case the account is gdm

dbus-launch is the command that sudo is executing for you in the gdm account

gnome-control-center is a parameter you are giving to dbus-launch, it is another program that will be run (also in the gdm account).

All together, you type ONE command line just like this:
sudo -u gdm dbus-launch gnome-control-center

There is another issue: that gnome-control-center might not be able to access your X windows. In that case here is what I suggest:

a) log in as root
b) type xhost + (command xhost, argument +)
c) type the command line from above

don't get b) it just returns syntax error

[m1boli]

Here is an example:

mglass: ~ # xhost + 
access control disabled, clients can connect from any host
mglass: ~ # sudo -u gdm dbus-launch gnome-control-center

** (gnome-control-center:24803): WARNING **:

...some warnings come out now, but the gnome control center program is running, as if executed from the gdm account.

[mightymouse2045]

Originally Posted by m1boli

Assuming you are using gdm greeter, try this:

sudo -u gdm dbus-launch gnome-control-center

It will launch the gnome-control-center application, running out of the gdm account.
Nobody ever logs in as 'gdm' personally. But your gdm greeter runs out of this
account and the background image is the account's desktop wallpaper.

Now follow the menus to change the desktop background..

I think it is a good idea to put your background image in /usr/share/backgrounds/
(or /usr/local/share/backgrounds/), where these backgrounds are stored, and
select it from there.

ok your way does work but you have to do this first:

1. open terminal
2. su -
3. enter your password
4. sudo -u gdm dbus-launch gnome-control-center
5. Click background and select your background

Done

[Socky]

Originally Posted by m1boli

a) log in as root
b) type xhost + (command xhost, argument +)
c) type the command line from above

Awesome, it worked. Thank you very much!

I can't seem to add more files though, as when I do I get an error "Could not read contents of root, permission denied." Although I'm sure I'll find a way around that

[mightymouse2045]

Originally Posted by mightymouse2045

ok your way does work but you have to do this first:

1. open terminal
2. su -
3. enter your password
4. sudo -u gdm dbus-launch gnome-control-center
5. Click background and select your background

Done

Yeah sorry because i had already typed in xhost + as root that is why it worked the correct flow is exactly as you stated man and thanks heaps for this. Just to clarify:

1. open terminal
2. #su -
3. #xhost +
4. #sudo -u gdm dbus-launch gnome-control-center
5. Click background and select your background
6. Logout and see your lovely new login background