Hello there. I’m currently trying to activate RandR for my motherboard VGA output, I tried using xrandr --setprovideroutputsource 1 0 but VGA monitor will still be in its own (tty1) session. The VGA monitor can be seen in ARandR (Screen Layout Editor) and Display applet but the actual screen itself will not output anything other than TTY1 login.

I’m thinking RandR is the solution but have no idea how to restart VGA1 monitor TTY1 session. This TTY1 session are not accessible using Ctrl+Alt+F1, it will turn my current Cinnamon Desktop (DVI-0 and DVI-1) into TTY1 and VGA monitor will output just black screen. This TTY1 session will appear before my computer boot into LightDM login GUI, I’m thinking this might be Xorg auto detection giving a separate session on my VGA monitor.

Current setup:

			           `.-/::/-``
			        .-/osssssssso/.               [email protected]
			       :osyysssssssyyys+-             OS: Antergos 
			    `.+yyyysssssssssyyyyy+.           Kernel: x86_64 Linux 4.4.1-2-ARCH
			   `/syyyyyssssssssssyyyyys-`         Uptime: 20m
			  `/yhyyyyysss++ssosyyyyhhy/`         Packages: 1060
			 .ohhhyyyyso++/+oso+syy+shhhho.       Shell: bash 4.3.42
			.shhhhysoo++//+sss+++yyy+shhhhs.      Resolution: 3840x1200
		 -yhhhhs+++++++ossso+++yyys+ohhddy:     DE: Cinnamon 2.8.6
		-yddhhyo+++++osyyss++++yyyyooyhdddy-    WM: Muffin
	 .yddddhso++osyyyyys+++++yyhhsoshddddy`   WM Theme: Numix-Frost (Numix-Frost)
	`odddddhyosyhyyyyyy++++++yhhhyosddddddo   GTK Theme: Numix-Frost [GTK2/3]
	.dmdddddhhhhhhhyyyo+++++shhhhhohddddmmh.  Icon Theme: Numix-Square
	ddmmdddddhhhhhhhso++++++yhhhhhhdddddmmdy  Font: Sans 9
	dmmmdddddddhhhyso++++++shhhhhddddddmmmmh  CPU: Intel Core i5-4670K CPU @ 4.4GHz
	-dmmmdddddddhhyso++++oshhhhdddddddmmmmd-  GPU: Gallium 0.4 on AMD TAHITI (DRM 2.43.0, LLVM 3.7.1)
	 .smmmmddddddddhhhhhhhhhdddddddddmmmms.  RAM: 1913MiB / 7896MiB
		 `+ydmmmdddddddddddddddddddmmmmdy/.     
			  `.:+ooyyddddddddddddyyso+:.`

lspci output:

	[[email protected] ~]$ lspci | egrep 'Display|VGA'
	00:02.0 Display controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)
	01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Tahiti XT [Radeon HD 7970/8970 OEM / R9 280X]

xrandr output (Before #xrandr --setoutputprovidersource 1 0):

	[[email protected] ~]$ xrandr
	Screen 0: minimum 320 x 200, current 3840 x 1200, maximum 16384 x 16384
	DisplayPort-0 disconnected (normal left inverted right x axis y axis)
	HDMI-2 disconnected (normal left inverted right x axis y axis)
	DVI-0 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis) 518mm x 324mm
		 1920x1200     59.95*+
		 1920x1080     60.00    50.00    59.94  
		 1920x1080i    60.00    50.00    59.94  
		 1600x1200     60.00  
		 1680x1050     59.88  
		 1600x1000     60.01  
		 1280x1024     75.02  
		 1440x900      59.90  
		 1280x960      60.00  
		 1152x864      75.00  
		 1280x720      60.00    50.00    59.94  
		 1024x768      75.08    60.00  
		 832x624       74.55  
		 800x600       75.00    60.32  
		 720x576       50.00  
		 720x576i      50.00  
		 720x480       60.00    59.94  
		 720x480i     119.88    60.00    59.94  
		 640x480       75.00    60.00    59.94  
		 720x400       70.08  
	DVI-1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 510mm x 287mm
		 1920x1080     60.00*+
		 1680x1050     59.88  
		 1280x1024     60.02  
		 1440x900      59.90  
		 1280x800      59.91  
		 1152x864      75.00  
		 1024x768      70.07    60.00  
		 800x600       60.32    56.25  
		 640x480       66.67    60.00  
		 720x400       70.08 

RandR output:

	[[email protected] ~]$ xrandr --setprovideroutputsource 1 0
	[[email protected] ~]$ xrandr --output VGA1 --right-of DVI-1
	[[email protected] ~]$ xrandr
	Screen 0: minimum 320 x 200, current 3840 x 1200, maximum 16384 x 16384
	DisplayPort-0 disconnected (normal left inverted right x axis y axis)
	HDMI-2 disconnected (normal left inverted right x axis y axis)
	DVI-0 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis) 518mm x 324mm
		 1920x1200     59.95*+
		 1920x1080     60.00    50.00    59.94  
		 1920x1080i    60.00    50.00    59.94  
		 1600x1200     60.00  
		 1680x1050     59.88  
		 1600x1000     60.01  
		 1280x1024     75.02  
		 1440x900      59.90  
		 1280x960      60.00  
		 1152x864      75.00  
		 1280x720      60.00    50.00    59.94  
		 1024x768      75.08    60.00  
		 832x624       74.55  
		 800x600       75.00    60.32  
		 720x576       50.00  
		 720x576i      50.00  
		 720x480       60.00    59.94  
		 720x480i     119.88    60.00    59.94  
		 640x480       75.00    60.00    59.94  
		 720x400       70.08  
	DVI-1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 510mm x 287mm
		 1920x1080     60.00*+
		 1680x1050     59.88  
		 1280x1024     60.02  
		 1440x900      59.90  
		 1280x800      59.91  
		 1152x864      75.00  
		 1024x768      70.07    60.00  
		 800x600       60.32    56.25  
		 640x480       66.67    60.00  
		 720x400       70.08  
	HDMI1 disconnected (normal left inverted right x axis y axis)
	HDMI2 disconnected (normal left inverted right x axis y axis)
	VGA1 connected (normal left inverted right x axis y axis)
		 1280x1024     60.02 +  75.02  
		 1152x864      75.00  
		 1024x768      75.08    70.07    60.00  
		 832x624       74.55  
		 800x600       72.19    75.00    60.32  
		 640x480       75.00    72.81    60.00  
		 720x400       70.08  
	VIRTUAL1 disconnected (normal left inverted right x axis y axis)
		1280x1024 (0x48) 108.000MHz
			    h: width  1280 start 1328 end 1440 total 1688 skew    0 clock  63.98KHz
			    v: height 1024 start 1025 end 1028 total 1066           clock  60.02Hz
		1280x1024 (0x49) 135.000MHz
			    h: width  1280 start 1296 end 1440 total 1688 skew    0 clock  79.98KHz
			    v: height 1024 start 1025 end 1028 total 1066           clock  75.02Hz
		1152x864 (0x4a) 108.000MHz
			    h: width  1152 start 1216 end 1344 total 1600 skew    0 clock  67.50KHz
			    v: height  864 start  865 end  868 total  900           clock  75.00Hz
		1024x768 (0x4b) 78.800MHz
			    h: width  1024 start 1040 end 1136 total 1312 skew    0 clock  60.06KHz
			    v: height  768 start  769 end  772 total  800           clock  75.08Hz
		1024x768 (0x4c) 75.000MHz
			    h: width  1024 start 1048 end 1184 total 1328 skew    0 clock  56.48KHz
			    v: height  768 start  771 end  777 total  806           clock  70.07Hz
		1024x768 (0x4d) 65.000MHz
			    h: width  1024 start 1048 end 1184 total 1344 skew    0 clock  48.36KHz
			    v: height  768 start  771 end  777 total  806           clock  60.00Hz
		832x624 (0x4e) 57.284MHz
			    h: width   832 start  864 end  928 total 1152 skew    0 clock  49.73KHz
			    v: height  624 start  625 end  628 total  667           clock  74.55Hz
		800x600 (0x50) 49.500MHz
			    h: width   800 start  816 end  896 total 1056 skew    0 clock  46.88KHz
			    v: height  600 start  601 end  604 total  625           clock  75.00Hz
		800x600 (0x51) 40.000MHz
			    h: width   800 start  840 end  968 total 1056 skew    0 clock  37.88KHz
			    v: height  600 start  601 end  605 total  628           clock  60.32Hz
		640x480 (0x52) 31.500MHz
			    h: width   640 start  656 end  720 total  840 skew    0 clock  37.50KHz
			    v: height  480 start  481 end  484 total  500           clock  75.00Hz
		640x480 (0x54) 25.200MHz
			    h: width   640 start  656 end  752 total  800 skew    0 clock  31.50KHz
			    v: height  480 start  490 end  492 total  525           clock  60.00Hz
		720x400 (0x55) 28.320MHz
			    h: width   720 start  738 end  846 total  900 skew    0 clock  31.47KHz
			    v: height  400 start  412 end  414 total  449           clock  70.08Hz

I have also tried to configure a **10-monitor.conf under /etc/X11/xorg.conf.d/ **but it seems to make thing worst.

	Section "Device"
			Identifier             "GPU Intel Haswell IGP"
			Driver                 "intel"
			BusID                  "PCI:0:2:0"
	EndSection

	Section "Device"
			Identifier             "GPU AMD Radeon R9 280X"
			Driver                 "radeon"
			BusID                  "PCI:1:0:0"
	EndSection


	Section "Monitor"
			Identifier             "Monitor HP w2408h"
			Option                 "PreferredMode" "1920x1200"
			Option                 "Position" "0 0"
	EndSection

	Section "Monitor"
			Identifier             "Monitor Acer H233H"
			Option                 "Primary" "true"
			Option                 "PreferredMode" "1920x1080"
			Option                 "Position" "1920 120"
	EndSection

	Section "Monitor"
			Identifier             "Monitor HP vs17e"
			Option                 "PreferredMode" "1280x1024"
			Option                 "Position" "3840 176"
	EndSection


	Section "Screen"
			Identifier             "Screen HP w2408h"
			Device                 "GPU AMD Radeon R9 280X"
			Monitor                "Monitor HP w2408h"
	EndSection

	Section "Screen"
			Identifier             "Screen Acer H233H"
			Device                 "GPU AMD Radeon R9 280X"
			Monitor                "Monitor Acer H233H"
	EndSection

	Section "Screen"
			Identifier             "Screen HP vs17e"
			Device                 "GPU Intel Haswell IGP"
			Monitor                "Monitor HP vs17e"
	EndSection


	Section "ServerLayout"
			Identifier      "Main Layout"
			Screen          0 "Screen HP w2408h"
			Screen          1 "Screen Acer H233H" RightOf "Screen HP w2408h"
			Screen          2 "Screen HP vs17e" RightOf "Screen Acer H233H"
	EndSection

Thanks in advance!