xfce can't detect second display

jmvankeuren · 07-18-2012, 09:10 PM

I have a newly installed xubuntu 12.04 distro on my intel netbook and I'm trying to get the display on my tv through a VGA cable. My friends windows machine works fine but I can't detect the tv through the Display settings or through ARandR

Here is the output from xrandr

Quote:

~$ xrandr
Screen 0: minimum 320 x 200, current 1024 x 600, maximum 4096 x 4096
LVDS1 connected 1024x600+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
1024x600 60.0*+
800x600 60.3 56.2
640x480 59.9
VGA1 connected (normal left inverted right x axis y axis)
1024x768 60.0
800x600 60.3 56.2
848x480 60.0
640x480 59.9

Please help!

TobiSGD · 07-18-2012, 09:43 PM

Try to activate the second screen with

Code:

xrandr --output VGA1 --auto

jmvankeuren · 07-20-2012, 02:34 PM

Some progress, thank you very much. Now the Display settings recognize the tv but the tv still isn't displaying anything

xrandr output again.

Quote:

~$ xrandr
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096
LVDS1 connected 1024x600+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
1024x600 60.0*+
800x600 60.3 56.2
640x480 59.9
VGA1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
1024x768 60.0*
800x600 60.3 56.2
848x480 60.0
640x480 59.9

And here is a screenshot of my display settings. Thanks again for the help!

https://plus.google.com/photos/10201...CKuR0ZH5h4OOPQ

guyonearth · 07-20-2012, 04:44 PM

You need to go into your monitors applet in your System settings and tell the second output what to do.

jmvankeuren · 07-22-2012, 08:57 AM

The only other display related settings i can find are in the screenshot below. I tried playing around with it but couldn't get anything to change.

If this is the correct area what am I supposed to change the values to? If not where else am I supposed to go or what commands can I run?

https://plus.google.com/photos/10201...PqV8rSttobXlgE

Alchemikos · 07-22-2012, 12:48 PM

I resolved it to me using xorg and xinerama, but I'm not using a TV but two different vga cards, intel and nvidia

Code:

Section "ServerLayout"
	Identifier     "X.org Configured"
	Screen      0  "Screen0" 0 0
	Screen      1  "Screen1" RightOf "Screen0"
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
        Option         "Xinerama"
EndSection

Section "Files"
	ModulePath   "/usr/lib64/xorg/modules"
	FontPath     "/usr/share/fonts/local"
	FontPath     "/usr/share/fonts/TTF"
	FontPath     "/usr/share/fonts/OTF"
	FontPath     "/usr/share/fonts/Type1"
	FontPath     "/usr/share/fonts/misc"
	FontPath     "/usr/share/fonts/CID"
	FontPath     "/usr/share/fonts/75dpi/:unscaled"
	FontPath     "/usr/share/fonts/100dpi/:unscaled"
	FontPath     "/usr/share/fonts/75dpi"
	FontPath     "/usr/share/fonts/100dpi"
	FontPath     "/usr/share/fonts/cyrillic"
EndSection

Section "Module"
	Load  "dbe"
	Load  "glx"
	Load  "extmod"
	Load  "dri2"
	Load  "record"
	Load  "dri"
EndSection

Section "InputDevice"
	Identifier  "Keyboard0"
	Driver      "kbd"
EndSection

Section "InputDevice"
	Identifier  "Mouse0"
	Driver      "mouse"
	Option	    "Protocol" "auto"
	Option	    "Device" "/dev/input/mice"
	Option	    "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
	Identifier   "Monitor0"
	VendorName   "Monitor Vendor"
	ModelName    "Monitor Model"
        HorizSync     24 - 82
        VertRefresh   50 - 75
        Modeline "1440x900_75.00"  136.75  1440 1536 1688 1936  900 903 909 942 -hsync +vsync
EndSection

Section "Monitor"
	Identifier   "Monitor1"
	VendorName   "Monitor Vendor"
	ModelName    "Monitor Model"
        HorizSync     24 - 82
        VertRefresh   50 - 75
        Modeline "1440x900_75.00"  136.75  1440 1536 1688 1936  900 903 909 942 -hsync +vsync
EndSection

Section "Device"
        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
        ### <percent>: "<f>%"
        ### [arg]: arg optional
        #Option     "AccelMethod"        	# [<str>]
        #Option     "DRI"                	# [<bool>]
        #Option     "ColorKey"           	# <i>
        #Option     "VideoKey"           	# <i>
        #Option     "FallbackDebug"      	# [<bool>]
        #Option     "Tiling"             	# [<bool>]
        #Option     "LinearFramebuffer"  	# [<bool>]
        #Option     "Shadow"             	# [<bool>]
        #Option     "SwapbuffersWait"    	# [<bool>]
        #Option     "XvMC"               	# [<bool>]
        #Option     "XvPreferOverlay"    	# [<bool>]
        #Option     "DebugFlushBatches"  	# [<bool>]
        #Option     "DebugFlushCaches"   	# [<bool>]
        #Option     "DebugWait"          	# [<bool>]
        #Option     "HotPlug"            	# [<bool>]
        #Option     "RelaxedFencing"     	# [<bool>]
	Identifier  "Card0"
	Driver      "intel"
	BusID       "PCI:0:2:0"
EndSection


Section "Device"
        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
        ### <percent>: "<f>%"
        ### [arg]: arg optional
        #Option     "SWcursor"           	# [<bool>]
        #Option     "HWcursor"           	# [<bool>]
        #Option     "NoAccel"            	# [<bool>]
        #Option     "ShadowFB"           	# [<bool>]
        #Option     "VideoKey"           	# <i>
        #Option     "WrappedFB"          	# [<bool>]
        #Option     "GLXVBlank"          	# [<bool>]
        #Option     "ZaphodHeads"        	# <str>
	Identifier  "Card1"
	Driver      "nouveau"
	BusID       "PCI:2:0:0"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Card0"
	Monitor    "Monitor0"
	DefaultDepth 24
	SubSection "Display"
		Viewport   0 0
		Depth     1
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     4
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     8
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     15
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     16
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     24
                Modes     "1440x900"
	EndSubSection
EndSection



Section "Screen"
	Identifier "Screen1"
	Device     "Card1"
	Monitor    "Monitor1"
	DefaultDepth 24
	SubSection "Display"
		Viewport   0 0
		Depth     1
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     4
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     8
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     15
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     16
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     24
                Modes   "1440x900"
	EndSubSection
EndSection

jmvankeuren · 07-22-2012, 08:15 PM

I'm sorry I don't follow, am I supposed to put this into a text file somewhere?

273 · 07-22-2012, 09:52 PM

You should have a Display entry under settings on your main menu? That should let you enable the second display.

guyonearth · 07-23-2012, 08:19 AM

In your menu under settings - monitors.

jmvankeuren · 07-23-2012, 02:59 PM

Thanks for putting up with me guys but I can't find any other display options, we're talking about xubuntu xfce right? In this gallery are screenshots of what's in my main menu and my settings page.

https://plus.google.com/photos/10201...CKuR0ZH5h4OOPQ

273 · 07-23-2012, 03:04 PM

Is the TV set to use the correct input? Just a thought as I thought I had a problem not long ago until I set the input on my monitor.

guyonearth · 07-23-2012, 03:15 PM

You're missing some applets, my system has many more options under settings. How did you install Xfce, and did you do a full install? Of course, it could be because I have Gnome and KDE installed as well.

jmvankeuren · 07-24-2012, 10:37 AM

The tv is set up correctly.

Oh okay, it's a fresh install of Xubuntu 12.04 which only comes with xfce.

I was hoping there would be a way to do it within xfce but do I need to install KDE or gnome?

273 · 07-24-2012, 10:47 AM

Where you're ticked "use this output" is that the TV you have ticked the box for? If so then XFCE is seeing it as an output and is sending a signal to the cable for it. Why it's not seeing that signal I'm not sure, which is why I asked whether you were sure the TV was set up correctly.
If that's not the TV that you've ticked "user this output" for does that mean you already have a monitor plugged in and you're trying to connect the TV too?

guyonearth · 07-24-2012, 12:40 PM

Quote:

Originally Posted by jmvankeuren

The tv is set up correctly.

Oh okay, it's a fresh install of Xubuntu 12.04 which only comes with xfce.

I was hoping there would be a way to do it within xfce but do I need to install KDE or gnome?

I don't know what else to suggest at this time, other than installing Gnome too. Xfce is a "lite" desktop, and not feature-complete when it comes to certain configuration tools, in my opinion. If you're using a one-display laptop, lite distros are fine, but on more complex setups it can be challenging to get things configured. There should be a monitor or display applet there, which makes me wonder if you installed everything you could. Look in your package manager under Xfce, there might be additional tools you can install.