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I have a Lenovo ThinkCentre M91P with an Intel integrated HD4000. When I boot the machine my displays become mirrored. I need them to be separate monitors. If I run xrandr and adjust the resolution and positioning it works fine.

xrandr output(while mirrored):

Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
VGA1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm x 268mm
1920x1080      60.0*+
1600x1200      60.0  
1680x1050      60.0  
1400x1050      60.0  
1600x900       60.0  
1280x1024      75.0     60.0  
1440x900       59.9  
1280x960       60.0  
1280x800       59.8  
1152x864       75.0  
1024x768       75.1     70.1     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  
HDMI1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm x       268mm
1920x1080      60.0*+
1600x1200      60.0  
1680x1050      60.0  
1400x1050      60.0  
1600x900       60.0  
1280x1024      75.0     60.0  
1440x900       59.9  
1280x960       60.0  
1280x800       59.8  
1152x864       75.0  
1024x768       75.1     70.1     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  
DP1  disconnected (normal left inverted right x axis y axis)

lspci output:

00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core     Processor Family Integrated Graphics Controller [8086:0102] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:3070]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 43
Region 0: Memory at fe000000 (64-bit, non-prefetchable) [size=4M]
Region 2: Memory at d0000000 (64-bit, prefetchable) [size=256M]
Region 4: I/O ports at f000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
    Address: fee00018  Data: 0000
Capabilities: [d0] Power Management version 2
    Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
    Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [a4] PCI Advanced Features
    AFCap: TP+ FLR+
    AFCtrl: FLR-
    AFStatus: TP-
Kernel driver in use: i915

Running udevadam --monitor does display events when the monitors are plugged/unplugged.

The displays are connected via a VGA port, and a DisplayPort to DVI adapter. There is a caveat behind this, you cannot use an xorg.conf file to fix this.

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