[SOLVED] Xorg update broke my multihead setup

Cirdan · 2014-07-29 16:17:48

Last night I ran a system update, and this morning when I logged in...my multi-monitor setup is broken. All three monitors are displaying the same thing. My main monitor displays the full 2560x1440 resolution, but the window manager is limited to the 1440x900 of my other two monitors. Xrandr doesn't want to configure things the same way:

.xinitrc

xrandr --output DFP9 --auto --right-of DFP1
xrandr --output DFP9 --rotate left
xrandr --output DFP10 --auto --right-of DFP9
xrandr --output DFP10 --rotate left
xrandr --output DFP1 --mode 2560x1440

xrdb -load ~/.Xresources
nitrogen --restore &


exec i3

If I run that first line in the terminal, it says the screen cannot be larger than 2560x2560. If I run the second command, it says "xrandr: Configure crtc 1 failed". This setup worked fine before I updated last night.

xorg.conf:

Section "ServerLayout"
	Identifier     "aticonfig Layout"
	Screen      0  "Screen0" 0 0
	Screen      1  "Screen1" RightOf "Screen0"
	Screen	    2  "Screen2" RightOf "Screen1"
EndSection

Section "Module"
EndSection

Section "Monitor"
	Identifier   "Monitor0"
	Option	    "VendorName" "ATI Proprietary Driver"
	Option	    "ModelName" "Generic Autodetecting Monitor"
	Option	    "DPMS" "true"
EndSection

Section "Monitor"
	Identifier   "Monitor1"
	Option	    "VendorName" "ATI Proprietary Driver"
	Option	    "ModelName" "Generic Autodetecting Monitor"
	Option	    "DPMS" "true"
EndSection

Section "Monitor"
	Identifier   "Monitor2"
	Option	    "VendorName" "ATI Proprietary Driver"
	Option	    "ModelName" "Generic Autodetecting Monitor"
	Option	    "DPMS" "true"
EndSection


Section "Device"
	Identifier  "Device0"
	Driver      "fglrx"
	BusID       "PCI:1:0:0"
EndSection

Section "Device"
	Identifier  "Device1"
	Driver      "fglrx"
	BusID       "PCI:1:0:0"
	Screen      1
EndSection

Section "Device"
	Identifier  "Device2"
	Driver      "fglrx"
	BusID       "PCI:1:0:0"
	Screen      2
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Device0"
	Monitor    "Monitor0"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
		Modes "2560x1440"
	EndSubSection
EndSection

Section "Screen"
	Identifier "Screen1"
	Device     "Device0"
	Monitor    "Monitor1"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Modes "1440x900"
		Depth     24
	EndSubSection
EndSection

Section "Screen"
	Identifier "Screen2"
	Device     "Device0"
	Monitor    "Monitor2"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Modes "1440x900"
		Depth     24
	EndSubSection
EndSection

EDIT: I made a change to my xorg.conf as I realized my secondary monitors both run at 1440x900

Last edited by Cirdan (2014-07-30 00:53:40)

Trilby · 2014-07-29 16:21:18

I have no idea if this would be relevant, but why are you using 5 separate xrandr commands? Those should all be done in one command (not least because the first command references an output you haven't configured yet).

Cirdan · 2014-07-29 16:22:54

Trilby wrote:

I have no idea if this would be relevant, but why are you using 5 separate xrandr commands? Those should all be done in one command (not least because the first command references an output you haven't configured yet).

I was not aware this was possible

Cirdan · 2014-07-30 00:26:55

Okay, I solved the problem by downgrading to xorg 1.15. I had forgotten that the catalyst drivers are incompatible with 1.16

jasonwryan · 2014-07-30 00:45:40

Please remember to mark your thread as [Solved] by editing your first post and prepending it to the title.

Arch Linux

#1 2014-07-29 16:17:48

[SOLVED] Xorg update broke my multihead setup

#2 2014-07-29 16:21:18

Re: [SOLVED] Xorg update broke my multihead setup

#3 2014-07-29 16:22:54

Re: [SOLVED] Xorg update broke my multihead setup

#4 2014-07-30 00:26:55

Re: [SOLVED] Xorg update broke my multihead setup

#5 2014-07-30 00:45:40

Re: [SOLVED] Xorg update broke my multihead setup

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