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I have a Lenovo T430 laptop (with the Nvidia Optimus hardware). With the default X configuration (i.e. no xorg.conf or any files in /etc/X11/xorg.conf.d/), the builtin monitor of my laptop works fine. However, I am not able to see the two monitors connected to my docking station with xrandr:
Screen 0: minimum 8 x 8, current 1600 x 900, maximum 32767 x 32767
LVDS1 connected 1600x900+0+0 (normal left inverted right x axis y axis) 309mm x 174mm
1600x900 60.01*+ 40.00
1024x768 60.00
800x600 60.32 56.25
640x480 59.94
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)However, I just learned that I can use the --setprovideroutputsource option to get those monitors to show up in xrandr:
[adavis@adavis-T430L ~]$ xrandr --listproviders
Providers: number : 2
Provider 0: id: 0xa2 cap: 0xb, Source Output, Sink Output, Sink Offload crtcs: 4 outputs: 3 associated providers: 0 name:Intel
Provider 1: id: 0x66 cap: 0x7, Source Output, Sink Output, Source Offload crtcs: 2 outputs: 5 associated providers: 0 name:nouveau
[adavis@adavis-T430L ~]$ xrandr --setprovideroutputsource nouveau Intel
[adavis@adavis-T430L ~]$ xrandr
Screen 0: minimum 8 x 8, current 1600 x 900, maximum 32767 x 32767
LVDS1 connected 1600x900+0+0 (normal left inverted right x axis y axis) 309mm x 174mm
1600x900 60.01*+ 40.00
1024x768 60.00
800x600 60.32 56.25
640x480 59.94
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
LVDS-1-2 disconnected (normal left inverted right x axis y axis)
VGA-1-2 disconnected (normal left inverted right x axis y axis)
DP-1-1 disconnected (normal left inverted right x axis y axis)
DP-1-2 connected (normal left inverted right x axis y axis)
1920x1080 60.00 +
1600x1200 60.00
1680x1050 59.88
1280x1024 75.02 60.02
1440x900 59.90
1280x960 60.00
1152x864 75.00
1024x768 75.08 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
640x480 75.00 72.81 66.67 60.00
720x400 70.08
DP-1-3 connected (normal left inverted right x axis y axis)
1920x1080 60.00 +
1600x1200 60.00
1680x1050 59.88
1280x1024 75.02 60.02
1440x900 59.90
1280x960 60.00
1152x864 75.00
1024x768 75.08 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
640x480 75.00 72.81 66.67 60.00
720x400 70.08
1024x768 (0x71) 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
800x600 (0x75) 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
800x600 (0x76) 36.000MHz
h: width 800 start 824 end 896 total 1024 skew 0 clock 35.16KHz
v: height 600 start 601 end 603 total 625 clock 56.25Hz
[adavis@adavis-T430L ~]$Then I can enable them:
[adavis@adavis-T430L ~]$ xrandr --output DP-1-2 --auto --right-of LVDS1
[adavis@adavis-T430L ~]$ xrandr --output DP-1-3 --auto --right-of DP-1-2
[adavis@adavis-T430L ~]$Unfortunately, when I drag any windows onto the two additional monitors (the builtin laptop monitor works fine throughout all of this), I get some really weird redraw behavior: I have to scroll or resize a window to see the new output, moving windows leaves fragments of the window behind, I can mouse over anything to see the latest output in small, mouse-sized chunks.
See this picture of my screen: http://picpaste.com/E6sR62Ah.jpg
What is this kind of Xserver artifact called (that might help my googling)? Any ideas how to fix this?
Last edited by silpertan (2015-07-22 14:10:51)
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By the way, this now works. I don't know what changed - I just tried it again, and whatever updates have happened since I posted this seem to have fixed the problem I was seeing. I can now use the standard, out-of-the-box X config, and the xrandr commands I was originally using now properly activate all three monitors (two DVI attached and the builtin laptop monitor).
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