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  • BrainwreckedTech 12:06 am on August 19, 2012 Permalink | Reply
    Tags: , , , , nvidia, ,   

    HOWTO: Get NVIDIA On Linux To Use Custom Resolutions Over DVI 

    NVIDIA LogoLinux Logo Half

    You want something easy? Cut the EDID pin on a VGA cable, hook up your monitor, configure xorg.conf to whateve resolution you want, and call it a day.

    You want something scary? Do the same with a DVI or HDMI cable and witness the NVIDIA driver do everything in its power keep you from falling down and skinning your knees like you’re 2 years old.

    The problem stems from the fact that digital flat panels have one native resolution. Well, actually, this would be a problem if these monitors didn’t have internal scalers. So now the problem becomes: What device scales better — your NVIDIA GPU or your flat panel? Chances are most people wouldn’t be able to tell. Some might be annoyed that their flat panel just steches everything without regard to aspect ratio.

    But what if you actually want to run at a “non-native” resolution because you’re using an HDTV whose actual native resolution is 1368×768, whose actual native resolution is never reported at all, but reports the max 1920×1080 as it’s native resolution?

    Here’s the slew of options you need:

    Option “UseEDID” “False”
    Tells the driver not to use modes that the display device reports it can use
    Option “UseEDIDFreqs” “False”
    Tells the driver to ignore frequency ranges reported over EDID.
    Option “ExactModeTimingsDVI” “True”
    IMPORTANT! Tells the driver to use timings as-is. Otherwise, it tries to find a best-fit resolution instead. If you leave EDID enabled while connected to an HDTV, you’ll get a 1368×768 resolution scaled to 1920×1080 resolution. If you disable EDID modes, the driver will fall back to 640×480 and then reject your custom resolution as being too large.
    ModeValidation NoDFPNativeResolutionCheck
    Tells the drive not to check resolutions agains the reported native resolution. This comes into play when UseEDID is false since the driver will fall back on 640×480 and then reject your custom resolution as too large.
    ModeValidation other
    Nothing special to note here as these would be used even if you were using a VGA connection.
    Section "Device"
    	Identifier	"DVI0"
    	Option		"UseDisplayDevice"	"DFP-0"
    	Driver		"nvidia"
    	Option		"UseEDID"		"False"
    	Option		"UseEDIDFreqs"		"False"
    	Option		"ExactModeTimingsDVI"	"True"
    	Option		"ModeValidation"	"NoDFPNativeResolutionCheck, NoEdidModes, NoMaxPClkCheck, NoVertRefreshCheck, NoHorizSyncCheck, NoEdidMaxPClkCheck"
    	Option		"NoLogo"		"True"
    	Option		"DPI"			"144 x 144"
    EndSection
    
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    • Tim 9:27 pm on September 17, 2013 Permalink | Reply

      Thanks! Just what I needed.

    • Paul M 12:59 pm on March 22, 2014 Permalink | Reply

      I don’t understand how 1366×768 is set as the resolution?
      thanks

      • BrainwreckedTech 9:09 am on July 25, 2014 Permalink | Reply

        This article only shows settings you need to use a specific resolution that many will overlook since HDTVs are a relatively new thing. It assumes you already know how to set the resolution but your efforts aren’t working as expected.

    • Jason 2:00 pm on April 1, 2015 Permalink | Reply

      Brian,
      I have a 42″ Samsung that my computer is plugged into. The desktop stretches past the screen.
      In windows I fixed this with nvidia settings. I’m getting closer.

      I fix over scan with the xserver settings in linux. I set it to 41, screen fits perfect. But now all of a sudden the desktop will scroll over to the edge when the mouse gets to close and also to the bottom. It looks like the top of my background is wrapping around the screen. (cutting the top off and then visible at the bottom. also on the right side)

      What can I do to get my desktop to stay in one place!!!!!!?

      also when I launch kodi/xbmc it stretches past the edge.
      The most resent thing i have installed is Florence keyboard. But I dont see how that would affect it.

      Thank you
      Jason

  • BrainwreckedTech 1:18 am on August 20, 2011 Permalink | Reply
    Tags: , , hdmi, , nvidia, resizing, resolution, scaling, widescreen   

    NVIDIA, HDTV, and Overscanning 

    Nvidia GeForce Logo First off, an apology for not writing in a long time, but since I’ve switched to Arch Linux I really haven’t had any brain-wrecking problems to write about. But you know, that just means the next problem I run across is going to be just that much bigger, right?

    I had a couple of issues with my HDTV. (More …)

     
  • BrainwreckedTech 3:06 am on June 5, 2010 Permalink | Reply
    Tags: boot splash, , graphics cards, , , nvidia, , plymouth, ,   

    BUG: Plymouth (Ubuntu Boot Splash) Reverts To 640×480 With Proprietary NVIDIA Driver 

    Ubuntu Logo Circle OnlyNVIDIA Logo

    UPDATE: Try sudo dpkg-reconfigure grub-pc first. With that, I no longer needed to make the tweaks in this article.

    Gah! It was so beautiful after the initial setup! 1680×1050 of native-res boot screen. Then I installed the proprietary NVIDIA drivers and it fell apart. Not only did the resolution fall down to 640×480, but the text input box dipped below the screen (I use encryption) and the dots seemed to cut into one another. I don’t know who deserves a swift kick in the [pick body part here], but I lean towards NVIDIA as I could not install in a VESA text mode AND things worked just fine with the open-source nv module.

    Andrew’s WebUpd8 blog did not help. Neither did Comment #34 for Bug #526892 on Launchpad. Of all places it was this post on Softpedia that brought things back.

    (More …)

     
  • BrainwreckedTech 1:27 am on May 14, 2009 Permalink | Reply
    Tags: binary drivers, bleeding edge, , graphics, , , nvidia, , ,   

    Ubuntu And The GeForce 200 Series 

    Ubuntu Logo
    nVidia GeForce Logo

    As of this writing, I’m getting conflicting views on the nVidia GTS 200 series of cards and Jaunty. Canonical says the GTS 250 is supported in 9.04, which uses driver version 180.44. However, nVidia states that driver version 180.51 adds support for the GTS 250. And while nVidia gives you the 180.51 drivers if you specify a GTX 295 card, driver package 181.20 on the Windows side officially states support for that card. Ah, the bleeding edge.

    In all probability, you can use 180.44 but your card will come up as an unkown nVidia card. Try the Canonical-approved driver installation first with sudo apt-get install nvidia-glx-180 (if you don’t already have the driver installed).

    If that doesn’t work, use the Canonical Launchpad driver (180.53)

    If that doesn’t work, there’s always manual installation.

     
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