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Thread: Can't set 2k resolution (option not shown)

  1. #1
    Join Date
    Jul 2020
    Beans
    4

    Can't set 2k resolution (option not shown)

    Dear Ubuntu Community,

    few weeks ago, I bought a new monitor. It is a BenQ PD2500Q. This screen has a WQHD resolution. My problem is, that my system only shows FHD as highest resolution possible (using Mini Display-Port). What can I do, to use the full resources of the monitor?

    My system:
    Notebook:
    T430 (2349D17)
    (external Monitor up to 2560×1600@60Hz https://support.lenovo.com/us/en/solutions/pd024705)

    CPU:
    i5 3320M

    GPU:
    Nvidia NVS 5400M
    Driver used:
    nvidia-diver-390.138

    OS:
    Ubuntu 20.04

    I would be very grateful, if anyone could help my to solve this issue!
    Thomas

  2. #2
    Join Date
    Sep 2009
    Location
    Pennsylvania
    Beans
    3,202
    Distro
    Xubuntu

    Re: Can't set 2k resolution (option not shown)

    Where did you get the driver from?

  3. #3
    Join Date
    Jul 2020
    Beans
    4

    Re: Can't set 2k resolution (option not shown)

    I'm using the driver which is proposed by ubuntu (software & Updates / Additional Drivers).

  4. #4
    Join Date
    Sep 2009
    Location
    Pennsylvania
    Beans
    3,202
    Distro
    Xubuntu

    Re: Can't set 2k resolution (option not shown)

    Does the system recognize the monitor correctly when connected? Have you tried another cable?

  5. #5
    Join Date
    Jul 2020
    Beans
    4

    Re: Can't set 2k resolution (option not shown)

    Yes I tried to another cable, but nothing changed and ubuntu recognizes the monitor (e.g. Xorg.0.log)


    May be there are some useful information in this ouput:
    xrandr --prop:
    Code:
    tomas@tomas-ThinkPad-T430:~$ xrandr --prop
    Screen 0: minimum 8 x 8, current 3520 x 1284, maximum 16384 x 16384
    LVDS-0 connected primary 1600x900+0+384 (normal left inverted right x axis y axis) 309mm x 174mm
        _MUTTER_PRESENTATION_OUTPUT: 0
        EDID:
            00ffffffffffff0006af3e2100000000
            21140104901f11780261959c59528f26
            21505400000001010101010101010101
            010101010101f82a409a61840c30402a
            330035ae10000018a51c409a61840c30
            402a330035ae10000018000000fe0041
            554f0a202020202020202020000000fe
            004231343052573032205631200a00d0
        BorderDimensions: 4
            supported: 4
        Border: 0 0 0 0
            range: (0, 65535)
        SignalFormat: LVDS
            supported: LVDS
        ConnectorType: Panel
        ConnectorNumber: 0
        _ConnectorLocation: 0
        non-desktop: 0
            supported: 0, 1
       1600x900      60.01*+  40.00  
    DP-0 disconnected (normal left inverted right x axis y axis)
        BorderDimensions: 4
            supported: 4
        Border: 0 0 0 0
            range: (0, 65535)
        SignalFormat: TMDS
            supported: TMDS
        ConnectorType: DisplayPort
        ConnectorNumber: 2
        _ConnectorLocation: 2
        non-desktop: 0
            supported: 0, 1
    DP-1 disconnected (normal left inverted right x axis y axis)
        BorderDimensions: 4
            supported: 4
        Border: 0 0 0 0
            range: (0, 65535)
        SignalFormat: TMDS
            supported: TMDS
        ConnectorType: DisplayPort
        ConnectorNumber: 3
        _ConnectorLocation: 3
        non-desktop: 0
            supported: 0, 1
    DP-2 disconnected (normal left inverted right x axis y axis)
        BorderDimensions: 4
            supported: 4
        Border: 0 0 0 0
            range: (0, 65535)
        SignalFormat: TMDS
            supported: TMDS
        ConnectorType: DisplayPort
        ConnectorNumber: 4
        _ConnectorLocation: 4
        non-desktop: 0
            supported: 0, 1
    DP-3 connected 1920x1080+1600+0 (normal left inverted right x axis y axis) 550mm x 310mm
        _MUTTER_PRESENTATION_OUTPUT: 0
        EDID:
            00ffffffffffff0009d12a8045540000
            0f1e0104a5371f783e4455a9554d9d26
            0f5054256b80d1c0b300a9c081808100
            81c001010101565e00a0a0a029502f20
            350029372100001a000000ff0039344c
            30303239353031510a20000000fd0032
            4c1e5a19000a202020202020000000fc
            0042656e5120504432353030510a0159
            020323f150901f222120051404131211
            0302010706230907078301000065030c
            002000011d007251d01e206e28550029
            372100001e8c0ad08a20e02d10103e96
            002937210000188c0ad090204031200c
            4055002937210000188c0ad090204031
            200c4055002937210000180000000000
            000000000000000000000000000000e8
        BorderDimensions: 4
            supported: 4
        Border: 0 0 0 0
            range: (0, 65535)
        SignalFormat: DisplayPort
            supported: DisplayPort
        ConnectorType: DisplayPort
        ConnectorNumber: 2
        _ConnectorLocation: 2
        non-desktop: 0
            supported: 0, 1
       1920x1080     60.00 +  59.94*   50.00    29.97    25.00    23.98  
       1680x1050     59.95  
       1600x900      60.00  
       1280x1024     75.02    60.02  
       1280x800      59.81  
       1280x720      60.00    59.94    50.00  
       1024x768      75.03    60.00  
       800x600       75.00    60.32  
       720x576       50.00  
       720x480       59.94  
       640x480       75.00    59.94    59.93  
    DP-4 disconnected (normal left inverted right x axis y axis)
        BorderDimensions: 4
            supported: 4
        Border: 0 0 0 0
            range: (0, 65535)
        SignalFormat: DisplayPort
            supported: DisplayPort
        ConnectorType: DisplayPort
        ConnectorNumber: 3
        _ConnectorLocation: 3
        non-desktop: 0
            supported: 0, 1
    DP-5 disconnected (normal left inverted right x axis y axis)
        BorderDimensions: 4
            supported: 4
        Border: 0 0 0 0
            range: (0, 65535)
        SignalFormat: DisplayPort
            supported: DisplayPort
        ConnectorType: DisplayPort
        ConnectorNumber: 4
        _ConnectorLocation: 4
        non-desktop: 0
            supported: 0, 1

  6. #6
    Join Date
    Dec 2014
    Beans
    1,552

    Re: Can't set 2k resolution (option not shown)

    You might want to take a look at what the monitor has to say about itself. Install the package 'read-edid' and run 'get-edid|parse-edid'. This should tell you what the monitor tells the system about itself.

    Holger

    Edit: I believe you need to be a member of the group 'i2c' for read-edid to work ...

  7. #7
    Join Date
    Jun 2007
    Beans
    14,131

    Re: Can't set 2k resolution (option not shown)

    Make sure the BenQ is set to DisplayPort 1.1 standard

  8. #8
    Join Date
    Jul 2020
    Beans
    4

    Re: Can't set 2k resolution (option not shown)

    THANK YOU!!!

    The DisplayPort 1.1 standard is the solution of my issue! Default there was set the 1.2 standard. As soon I changed this setting at the BenQ, the 2560×1440 resolution was shown as option. Thank you very much to all of you who supported me!!!

    Thomas

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