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Old 03-25-2014, 07:50 PM   #1
sigint-ninja
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what dm am i using on debian wheezy?


im trying to change my login picture
i found a way but it requires me to know what DM im using
im using xfce desktop environment, but how do you know the desktop manager...

im a bit confused about xwindows,desktop manager, and desktop environment are they all separate elements

how does using one desktop manager running gnome differ from another...how do you know which is best?

any help appreciated...
 
Old 03-25-2014, 08:36 PM   #2
dolphin_oracle
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X or xwindows is the server system that provides the tools for the windows and such in the desktop environment. X also handles things like keyboards, display drivers, mouse/touchpads, etc...

DM is actually usually Display Manager. This piece generally handles the log in info (username and password) and allows you to select which environment to log into if you have more than one.

the WM or window manager handles the actually drawing and placing of windows on your screen (directing xwindows). Some WMs can be used alone (like icewm, fluxbox, openbox or jwm) and some are generally used in conjuction with the desktop environment.

The DE or desktop environment is the collection of apps that you use to operate your desktop. Some linux distros do not have a DE per se, but most desktop-oriented distros do. XFCE, Mate, KDE, Gnome, Cinnamon, LXDE, and Unity are examples of DE's. Many of the DE's are integrated to some level with a WM. For instance, xfwm is the window manager for XFCE. LXDE uses openbox, but rounds out the desktop environment with a collection of common apps. KDE uses kwin by default. And there are many many combinations. Some distros use compbiz under the hood (Ubuntu does this with Unity/compbiz). compbiz's claim to fame is fancy 3d effects.

So you need to find out what display manager you are using. What distro are you using? Many distros using xfce use lightdm as the display manager these days. Other examples would be slim, gdm, kdm, or even xdm.
 
Old 03-25-2014, 08:44 PM   #3
dolphin_oracle
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actually I see you are using debian wheezy. Its likely either gdm or lightdm. If its lightdm, you can find the configuration files in /etc/lightdm. I assume the gdm directory would be similar.
 
Old 03-26-2014, 06:22 AM   #4
sigint-ninja
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Is there a command i can run to see what DM im using (gdm or light gdm)


Thanks dolphin, you explained all that way better than the book im reading...thanks again

Last edited by sigint-ninja; 03-26-2014 at 06:23 AM.
 
Old 03-26-2014, 06:27 AM   #5
pan64
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ps -ef | grep dm will tell you the name of the dm process. (lightdm, gdm3, whatever)

Last edited by pan64; 03-26-2014 at 06:27 AM. Reason: typo
 
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Old 03-26-2014, 06:38 AM   #6
jamison20000e
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Hi. Good inf in:

/etc/
/etc/X11/
/etc/X11/default-display-manager ...best wishes and have fun. (Wow I'm a slow typer, although I was searching the folders and memory. )

Last edited by jamison20000e; 03-26-2014 at 06:41 AM.
 
Old 03-26-2014, 01:26 PM   #7
sigint-ninja
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Thanks for that info lads!!!

another quick question...do you guys have to google commands??? or do you really
know a lot just off the top of your head!!! must take years...if thats the case

thanks again...
 
Old 03-26-2014, 01:55 PM   #8
jamison20000e
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Here is my terminals background in GUI mode (stretchable cheat sheet, Attachment 15065(click pic) ) when I learn the most I wipe out the line inside /etc/X11/default-display-manager (or other methods) that start me in CLI only where I can use Links2 or other browsers if
Code:
man
and [tab] can't cut it...
Code:
startx
goes back to GUI.

Last edited by jamison20000e; 11-06-2014 at 06:57 PM.
 
Old 03-27-2014, 02:08 AM   #9
pan64
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Quote:
Originally Posted by sigint-ninja View Post
Thanks for that info lads!!!

another quick question...do you guys have to google commands??? or do you really
know a lot just off the top of your head!!! must take years...if thats the case

thanks again...
I think you will learn the commands you use frequently and you will forget those unused ones...
 
  


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