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Thread: How to install Dell 4K display

  1. #1
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    How to install Dell 4K display

    Hi all,

    $ ubuntu-drivers devices
    Code:
    == /sys/devices/pci0000:00/0000:00:02.0/0000:01:00.0 ==
    modalias : pci:v000010DEd00002187sv00001462sd00003850bc03sc00i00
    vendor   : NVIDIA Corporation
    model    : TU116 [GeForce GTX 1650 SUPER]
    driver   : nvidia-driver-470 - distro non-free recommended
    driver   : nvidia-driver-450-server - distro non-free
    driver   : nvidia-driver-460-server - distro non-free
    driver   : nvidia-driver-470-server - distro non-free
    driver   : nvidia-driver-460 - distro non-free
    driver   : xserver-xorg-video-nouveau - distro free builtin
    $ sudo apt install nvidia-driver-470
    [sudo] password for satimis:
    Code:
    Reading package lists... Done
    Building dependency tree       
    Reading state information... Done
    nvidia-driver-470 is already the newest version (470.63.01-0ubuntu0.20.04.2).
    0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
    Settings -> Display
    Resolution 1920 x 1080 (max)

    Please help. Thanks in advance

    Regards

  2. #2
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    Re: How to install Dell 4K display

    Does xrandr show 4k resolutions as possible? Running it without any arguments should show a list of available resolutions. If it doesn't, you might need to get correct EDID data for the monitor to convince the GPU that other resolutions are possible. I would expect a Dell 4K monitor to provide correct EDID, but if there is a KVM switch or some other adapter between the monitor and GPU, that could be blocking the information.

    I have a 4K 4x2 matrix HDMI switch that blocks the monitor's EDID information. This HDMI switch has toggle switches to force specific resolutions to be provided to GPUs. Alas I don't have a 4k screen, yet, so I cannot show that output. It also hides the vendor information for the monitor that the EDID data contains. To see human-readable EDID, use:
    Code:
    sudo get-edid | parse-edid

  3. #3
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    Re: How to install Dell 4K display

    Quote Originally Posted by TheFu View Post
    Does xrandr show 4k resolutions as possible? R
    -snip-
    $ xrandr
    Code:
    xrandr: Failed to get size of gamma for output default
    Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080
    default connected primary 1920x1080+0+0 0mm x 0mm
       1920x1080     77.00*
    There are 2 SSD drives on this PC both running Ubuntu 20.00. They are controlled by BIOS at booting. This is a lately added SSD. The 1st SSD is also running Ubuntu 20.04 without problem.

    If rebooting this SSD and selecting on BIOS to boot the 1st SSD. Ubuntu starts without problem running on 4K display.

    It amazing me,

  4. #4
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    Re: How to install Dell 4K display

    uefi or legacy boot on both SSDs? Just asking to clarify.
    My GT 1030 says this:
    Code:
    $ xrandr
    Screen 0: minimum 8 x 8, current 1920 x 1200, maximum 32767 x 32767
    DVI-D-0 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis) 518mm x 324mm
       1920x1200     59.95*+
       1920x1080     60.00  
       1680x1050     59.95  
       1600x1200     60.00  
       1280x1024     60.02  
       1280x960      60.00  
       1024x768      60.00  
       800x600       60.32  
       640x480       59.94  
    HDMI-0 disconnected (normal left inverted right x axis y axis)
    The DVI output goes into a DVI -to- VGA converter that only supports up to 1920x1200. The get-edid|parse-edid doesn't see the Dell monitor - it only sees that converter device:
    Code:
    $ sudo get-edid |parse-edid 
    ...
    Section "Monitor"
            Identifier "�."
            ModelName "�."
            VendorName "AGO"
            # Monitor Manufactured week 45 of 2013
            # EDID version 1.3
            # Digital Display
            DisplaySize 300 230
            Gamma 1.97
            Option "DPMS" "true"
            #Not giving standard mode: 1280x1024, 60Hz
            #Not giving standard mode: 1280x960, 60Hz
            #Not giving standard mode: 1280x800, 60Hz
            #Not giving standard mode: 1440x900, 60Hz
    ...
    My xorg conf file is custom with lots of modelines created by some tools (sorry, I don't recall exactly how). I override the edid it sees to use the edid for the Dell monitor:
    Code:
    Section "Device"
        Identifier     "Device0"
        Driver         "nvidia"
        VendorName     "NVIDIA Corporation"
        BoardName "GeForce GT 1030"
        # Option "UseEDID" "False"
        Option "UseDisplayDevice" "DFP-0"
        Option "CustomEDID" "DFP-0:/etc/X11/xorg-monitor.dell-2412m.edid.raw"
        # Option      "ModeDebug"
    EndSection
    I've been looking at 4K monitors and have updated some of my other equipment to handle that day. Perhaps this holiday season the prices will get into my budget?

    I have zero idea to accomplish any of this using Wayland.

  5. #5
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    Re: How to install Dell 4K display

    Quote Originally Posted by TheFu View Post
    uefi or legacy boot on both SSDs? Just asking to clarify.
    My GT 1030 says this:
    [CODE]$ xrandr
    Screen 0: minimum 8 x 8, current 1920 x 1200, maximum 32767 x 32767
    DVI-D-0 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis) 518mm x 324mm
    1920x1200 59.95*+
    1920x1080 60.00
    1680x1050 59.95
    1600x1200 60.00
    1280x1024 60.02
    1280x960 60.00
    1024x768 60.00
    800x600 60.32
    640x480 59.94
    - snip -
    Hi,

    Thanks for your advice.

    Problem solved after running on Terminal;
    $ sudo apt update
    $ sudo apt dist-upgrade

    $ sudo apt upgrade didn't work.

    $ xrandr
    Code:
    DP-2 disconnected (normal left inverted right x axis y axis)
    DP-3 disconnected (normal left inverted right x axis y axis)
    HDMI-0 disconnected (normal left inverted right x axis y axis)
    DP-4 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 697mm x 392mm
       3840x2160     60.00*+  29.98  
       2560x1440     59.95  
       2048x1280     59.96  
       2048x1080     24.00  
       1920x1200     59.88  
       1920x1080     60.00    59.94    50.00    23.98  
       1600x1200     60.00  
       1600x900      60.00  
       1280x1024     75.02    60.02  
       1280x720      59.94    50.00  
       1152x864      75.00  
       1024x768      75.03    60.00  
       800x600       75.00    60.32  
       720x576       50.00  
       720x480       59.94  
       640x480       75.00    59.94    59.93  
    DP-5 disconnected (normal left inverted right x axis y axis)
    Now my problem gone.

    I suppose the problem was caused on installing Ubuntu 20.04

    Thanks again for your help.

    Regards

  6. #6
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    Re: How to install Dell 4K display

    update/full-upgrade should be the first thing for any hardware related issues.
    Add that to your troubleshooting checklist.

  7. #7
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    Re: How to install Dell 4K display

    Quote Originally Posted by TheFu View Post
    update/full-upgrade should be the first thing for any hardware related issues.
    Add that to your troubleshooting checklist.
    Noted and thanks

    Regards

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