this was strange;
usually, when xrandr outputs the following:
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Screen 0: minimum 320 x 200, current 1680 x 1050, maximum 1680 x 1680
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VGA-0 connected 1680×1050+0+0 (normal left inverted right x axis y axis) 465mm x 291mm
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1680×1050 60.0*+
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1600×1000 60.0
-
1280×1024 75.0 60.0
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1440×900 59.9
-
1280×960 60.0
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1152×864 75.0
-
1152×720 60.0
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1024×768 75.0 60.0
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832×624 74.6
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800×600 75.0 60.3
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640×480 75.0 59.9
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720×400 70.1
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DVI-0 connected (normal left inverted right x axis y axis)
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1360×768 59.8
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1152×864 60.0
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1024×768 60.0
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800×600 60.3
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640×480 59.9
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LVDS connected 1680×1050+0+0 (normal left inverted right x axis y axis) 331mm x 207mm
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1680×1050 60.1*+ 50.1
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1400×1050 60.0
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1280×1024 59.9
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1440×900 59.9
-
1280×960 59.9
-
1280×854 59.9
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1280×800 59.8
-
1280×720 59.9
-
1152×768 59.8
-
1024×768 59.9
-
800×600 59.9
-
640×480 59.4
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S-video disconnected (normal left inverted right x axis y axis)
(don’t ask me where dvi-0 comes from…)
one would think a simple xrandr --output VGA-0 --auto would activate the second monitor. however, this doesn’t change anything. instead, i have to use the following:
xrandr --output VGA-0 --auto --same-as LVDS
after closing the notebook lid, i get a picture on my monitor… but i may not turn off lvds or dvi-0, or the monitor (on vga) will turn off…

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