Question

7

Triple-head on a Lenovo T520

rated 0 times [ 7] [ 0] / answers: 1 / hits: 7063 / 1 Year ago, wed, april 19, 2023, 9:06:14

Lenovo T520 with integrated Intel HD graphics + a NVidia card (Optimus)

Ubuntu 11.10 on the computer.

I would like to use the built-in screen plus two external screens.

This PDF indicates that it is possible to connect up to four external monitors to the laptop. The information is Windows only.

I was planning to disable the NVidia card, since I have read that Linux support for Optimus is not good.

Questions:

Has anyone set up three monitors on NVidia hardware?

Has anyone set up three monitors using Intel HD 3000?

Can I expect it to work out of the box, or are there tricks I need to be aware of?

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kroapathe

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3 Years ago

answered 1 Year ago igeonlothe · Accepted Answer

With Optimus enabled and OS detection on in the BIOS, I've got 2 external DVI connected monitors (docking - Nvidia card) and the laptop LCD (Intel card) to work. I did also get the VGA (Intel card) on the docking working, but was not able to not have it as a clone of the laptop LCD.

Here is my xorg config with Xinerama enabled:

Section "ServerLayout"

    Identifier     "Layout0"



    Screen      0   "ScreenNvidia0" 0 0

    Screen      1   "ScreenNvidia1"  RightOf "ScreenNvidia0"

    Screen      2   "ScreenIntel"    RightOf "ScreenNvidia1"



    InputDevice    "Keyboard0" "CoreKeyboard"

    InputDevice    "Mouse0" "CorePointer"

    Option         "Xinerama" "true"

EndSection



Section "Files"

EndSection



Section "InputDevice"

    # generated from default

    Identifier     "Mouse0"

    Driver         "mouse"

    Option         "Protocol" "auto"

    Option         "Device" "/dev/psaux"

    Option         "Emulate3Buttons" "no"

    Option         "ZAxisMapping" "4 5"

EndSection



Section "InputDevice"

    # generated from default

    Identifier     "Keyboard0"

    Driver         "kbd"

EndSection



Section "Monitor"

    # HorizSync source: edid, VertRefresh source: edid

    Identifier     "MonitorNvidia0"

    VendorName     "Unknown"

    ModelName      "Samsung SyncMaster"

    HorizSync       30.0 - 81.0

    VertRefresh     50.0 - 63.0

    Option         "DPMS"

EndSection

Section "Monitor"

    # HorizSync source: edid, VertRefresh source: edid

    Identifier     "MonitorNvidia1"

    VendorName     "Unknown"

    ModelName      "Samsung SyncMaster"

    HorizSync       30.0 - 81.0

    VertRefresh     50.0 - 63.0

    Option         "DPMS"

EndSection



Section "Monitor"

    # HorizSync source: edid, VertRefresh source: edid

    Identifier     "MonitorIntel"

    VendorName     "Unknown"

    ModelName      "Unknown"

    HorizSync       30.0 - 81.0

    VertRefresh     50.0 - 63.0

    Option         "DPMS"

EndSection

Section "Device"

    Identifier     "DeviceNvidia0"

    Driver         "nvidia"

    VendorName     "NVIDIA Corporation"

    BusID          "1:0:0"

    Option         "RegistryDwords" "EnableBrightnessControl=1"

    Screen         0

EndSection

Section "Device"

    Identifier     "DeviceNvidia1"

    Driver         "nvidia"

    VendorName     "NVIDIA Corporation"

    BusID          "1:0:0"

    Option         "RegistryDwords" "EnableBrightnessControl=1"

    Screen         1

EndSection



Section "Device"

    Identifier     "DeviceIntel"

    Driver         "intel"

    BusID          "0:2:0"



       Option          "monitor-VGA1"  "VGA1"

    Option          "monitor-TV"   "TV"

    Option          "monitor-LVCD1" "LVCD1"

Option "Clone" "off"

EndSection



Section "Monitor"

    Identifier      "VGA1"

EndSection



Section "Monitor"

    Identifier      "LVCD1"

    Option          "DPMS"

EndSection



Section "Monitor"

    Identifier      "TV"

    Option  "Ignore" "false"

EndSection



Section "Screen"

    Identifier  "ScreenNvidia0"

    Device      "DeviceNvidia0"

    Monitor     "MonitorNvidia0"

    DefaultDepth 24

    SubSection "Display"

    Depth 24

    Modes "1920x1200"

    EndSubSection

EndSection



Section "Screen"

    Identifier  "ScreenNvidia1"

    Device      "DeviceNvidia1"

    Monitor     "MonitorNvidia1"

    DefaultDepth 24

    SubSection "Display"

    Depth 24

    Modes "1920x1200"

    EndSubSection

EndSection



Section "Screen"

    Identifier     "ScreenIntel"

    Device         "DeviceIntel"

    Monitor        "MonitorIntel"

    DefaultDepth 24

    SubSection "Display"

    Depth 24

    Modes "1900x1200"

    EndSubSection

    SubSection "Display"

    Depth 24

    Modes "1920x1200"

    EndSubSection



EndSection

In the "DeviceIntel" section is my last attempt to get more than one monitor on the Intel card.

Here is an extract of my "lspci":

$ lspci |grep VGA

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)

01:00.0 VGA compatible controller: nVidia Corporation Device 1057 (rev a1)