xrandr vs Samsung F2380 DVI-D

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Монитор Samsung F2380
X.Org X Server 1.11.3.901 (1.11.4 RC 1)
Linux hq-ntb-cio 3.1.0-1-amd64 #1 SMP Tue Jan 10 05:01:58 UTC 2012 x86_64 GNU/Linux
Lenovo Thinkpad X220 + док.

Монитор включен в док VGA-VGA

xrandr -q
Screen 0: minimum 320 x 200, current 3286 x 1080, maximum 8192 x 8192
LVDS1 connected 1366x768+0+256 (normal left inverted right x axis y axis) 277mm x 156mm
   1366x768       60.0*+
   1360x768       59.8     60.0  
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
VGA1 connected 1920x1080+1366+0 (normal left inverted right x axis y axis) 338mm x 270mm
   1024x768       60.0 +   75.1     70.1  
   1280x1024      75.0     60.0  
   832x624        74.6  
   800x600        72.2     75.0     60.3     56.2  
   640x480        72.8     75.0     66.7     60.0  
   720x400        70.1  
   1920x1080      60.0* 
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP3 disconnected (normal left inverted right x axis y axis)

Монитор включен в док DP->DVI-D

xrandr -q
Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192
LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 277mm x 156mm
   1366x768       60.0*+
   1360x768       59.8     60.0  
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP3 disconnected (normal left inverted right x axis y axis)

По-простому не включается:

xrandr --output DP1 --auto --right-of LVDS1

sudo ddccontrol -p
ddccontrol version 0.4.2

Detected monitors :
 - Device: dev:/dev/i2c-7
   DDC/CI supported: No
   Monitor Name: VESA standard monitor
   Input type: Digital
 - Device: dev:/dev/i2c-6
   DDC/CI supported: No
   Monitor Name: VESA standard monitor
   Input type: Digital
No monitor supporting DDC/CI available.

sudo get-edid|parse-edid|grep Identifier
Identifier "LGD:d802" (это экран ноутбука)

Порт, все переходники — работают, монитор установлен на смену, с предыдущим (NEC 1970NX) проблем не было. Дайте на водку.

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