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Thread: EeeBox PC won't recognize LG FLATRON monitor resolution properly

  1. #1
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    Jan 2014
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    Question EeeBox PC won't recognize LG FLATRON monitor resolution properly

    I run Ubuntu 13.30 on an EeeBox PC EB1007 with an LG FLATRON E2342 monitor plugged on VGA.

    Firstly, Ubuntu just offered basic resolutions: 1024x724 + 800x600.
    Then, I tried to adjust things by creating a /etc/X11/xorg.conf file with the following content:

    Code:
    # 2014-01-30 fd for LG FLATRON E2342
    
    Section "Device"
            Identifier      "FLATRON E2342"
    EndSection
    
    Section "Monitor"
            Identifier      "Configured Monitor"
            Vendorname      "LG"
            Horizsync       30-83
            Vertrefresh     56-75
            Modeline        "1920x1080@56"  160.00  1920 2040 2240 2560  1080 1083 1088 1118 -hsync +vsync
            Modeline        "1920x1080@60"  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync
            Modeline        "1920x1080@70"  204.25  1920 2056 2256 2592  1080 1083 1088 1127 -hsync +vsync
            Gamma           1
    EndSection
    
    Section "Screen"
            Identifier      "Default Screen"
            Device          "FLATRON E2342"
            Monitor         "Configured Monitor"
            DefaultDepth    24
            SubSection      "Display"
                    Depth   24
                    Modes   "1920x1080@56"  "1920x1080@60"  "1920x1080@70"
            EndSubSection
    EndSection
    After a reboot, the system offered the 1920x1080 resolution but it looks rather slobbery, like with a shadow on everything. I am quite sure that my settings miss something, but I don't know what else I should add.

    Due to the fact, that the EeeBox PC EB1007 has graphic onchip and that I didn't find any other information about it, I didn't add a "Driver" line to the "Device" section.

    I'd be glad to get any hints or help. Thank you all.

  2. #2
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    Re: EeeBox PC won't recognize LG FLATRON monitor resolution properly

    Thread moved to Multimedia & Video.

    Presuming you are using the open-source drivers, then? Please post the output of:

    Code:
    sudo lshw -C video
    arandr is helpful for dual-monitor setups. It is in the Software Centre. Install and have a look what that offers.

  3. #3
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    Re: EeeBox PC won't recognize LG FLATRON monitor resolution properly

    Hi there. Thank you for your reply.

    Code:
    $ sudo lshw -C video
      *-display:0
           Beschreibung: VGA compatible controller
           Produkt: Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics Controller
           Hersteller: Intel Corporation
           Physische ID: 2
           Bus-Informationen: pci@0000:00:02.0
           Version: 00
           Breite: 32 bits
           Takt: 33MHz
           Fähigkeiten: msi pm vga_controller bus_master cap_list rom
           Konfiguration: driver=i915 latency=0
           Ressourcen: irq:41 memory:fbc80000-fbcfffff ioport:c800(Größe=8) memory:d0000000-dfffffff memory:fbb00000-fbbfffff
      *-display:1 UNGEFORDERT
           Beschreibung: Display controller
           Produkt: Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics Controller
           Hersteller: Intel Corporation
           Physische ID: 2.1
           Bus-Informationen: pci@0000:00:02.1
           Version: 00
           Breite: 32 bits
           Takt: 33MHz
           Fähigkeiten: pm bus_master cap_list
           Konfiguration: latency=0
           Ressourcen: memory:fbd00000-fbd7ffff
    This PC has only one external monitor plugged. Should I really install arandr?

  4. #4
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    Re: EeeBox PC won't recognize LG FLATRON monitor resolution properly

    I have now enhanced my /etc/X11/xorg.conf file and added the driver. The first section now reads:

    Code:
    Section "Device"
            Identifier      "FLATRON E2342"
            Driver          "i915"
    EndSection
    But the screen still shows shadowed output after a reboot.

  5. #5
    Join Date
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    Ubuntu 12.04 Precise Pangolin

    Re: EeeBox PC won't recognize LG FLATRON monitor resolution properly

    Sorry to be the bearer of bad news, but,

    while I was researching for a new cheap external monitor for my netbook with Pineview N4xx Atom, the same chipset like your mini PC, i.e. NM10 (and thus) with 3150 GMA for VGA, I found out that the vga output of 3150GMA can only support resolutions up to 1600x900 (I also downloaded its manual from HP and it confirmed this, it says vga port max. res is 1600x900@60Hz). That's why I specifically bought a 20in. monitor with 1600x900 native res and from a brand that offers monitors with EDIDs that generally work without problems under linux, Samsung (it was also cheap); and it only took me 15secs to set up the monitor in 12.04.

    Hope that helps.

  6. #6
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    Re: EeeBox PC won't recognize LG FLATRON monitor resolution properly

    Hi kostkon.
    Thank you for pointing me this information. Why does another monitor (Samsung SyncMaster 2243LNX) with 1680x1050 show a perfectly sharp screen when its horizontal number of pixels is larger than the maximum amount supported by the 3150 GMA VGA port (1600x900)?

    Now I have added more Modelines for "1440x900@60" and "1600x900@60" to my /etc/X11/xorg.conf file, but the screen still doesn't show sharp text and images after switching its resolution via the System panel.

  7. #7
    Join Date
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    Re: EeeBox PC won't recognize LG FLATRON monitor resolution properly

    Quote Originally Posted by Ulf_Dunkel View Post
    Hi kostkon.
    Thank you for pointing me this information. Why does another monitor (Samsung SyncMaster 2243LNX) with 1680x1050 show a perfectly sharp screen when its horizontal number of pixels is larger than the maximum amount supported by the 3150 GMA VGA port (1600x900)?

    Now I have added more Modelines for "1440x900@60" and "1600x900@60" to my /etc/X11/xorg.conf file, but the screen still doesn't show sharp text and images after switching its resolution via the System panel.
    I talked about the max res, which is 1600x900, but yes it can support up to 1680 pixels for width, I can confirm that because I remember reading about it on a forum.

    Your monitor's native res is 1920x1080 so any other lower resolution will appear blurry, I am not sure you can do anything about it.

    Hope that helps.

    EDIT: also go up to 1080 for height, sorry, so max res of 3150 can be 1680x1050, I agree, but not more than that!
    Last edited by kostkon; January 30th, 2014 at 01:39 PM.

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