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Thread: higher resolution means less display quality?

  1. #1

    Default higher resolution means less display quality?

    hello everybody,

    this post started after i have googled around about 2h without solving my problem:

    the higher the resolution is i set to my opensuse, the greater the symbols and text-sizes of my windows will be (pictures follow).

    i installed openSuse in my vmware Workstation tryed differnt screen-sizes. for example here is a perfect display quality with a res of 1024x768:


    but if i change the res to 2560x1600 i get really ugly results


    is there a setting to avoid the resizing of windows like firefox or dolphin /fixing the dpi?

    thnx DS

  2. #2

    Default Re: higher resolution means less display quality?

    Hello DrSarez and welcome to the community!

    Could you tell us which version of openSUSE you have? (I think 11.2 seeing the artwork)
    And which version of KDE?
    And do you have desktop effects enabled?
    Quote Originally Posted by DrSarez
    this post started after i have googled around about 2h without solving my problem:

    the higher the resolution is i set to my opensuse, the greater the symbols and text-sizes of my windows will be (pictures follow).
    It's a very strange problem.
    Have you tried to log-out and log-in again after you changed the resolution?
    You can also make a new user and see if you get the same problem.

    Best of luck!
    Where did I put my coffee cup?
    dir -R /home/* | grep "coffee cup"

  3. #3

    Default Re: higher resolution means less display quality?

    Hello Edward, thnx

    • i downloaded openSUSE 11.2 (x86_64) 5h ago
    • it uses KDE 4.3.5 "release 0"
    • desktop-effects are DISabled


    A re-login hasn't any effects. The higher the resolution i set, the higher the system dynamically scales the gui-widgets (buttons, bars, text-labels, symbols,...). this with the effect that symbols become 'overscaled' (you can see the pixls) and text-labels will be drawn ower adjacent labels.

    last but not least i created a new testuser (yast2/ default settings), changed the login to this account and recieved the same behavior. so it seemes to depend on system-settings (/hardware).

  4. #4

    Lightbulb Re: higher resolution means less display quality?

    I have to mention that i could upload the compressed virtual machine. I just installed the system, updated it and installed vmware-tools.

    If i delete some software the vm could be under 1GiB - just if somebody want's to make a real view of the situation. (The vm could be replayd with the free vmware-player).

  5. #5

    Default Re: higher resolution means less display quality?

    Hello DrSarez,

    Quote Originally Posted by DrSarez
    I have to mention that i could upload the compressed virtual machine. I just installed the system, updated it and installed vmware-tools.

    If i delete some software the vm could be under 1GiB - just if somebody want's to make a real view of the situation. (The vm could be replayd with the free vmware-player).
    I don't think that is needed because it could be a hardware problem.
    Do you have drivers installed for your graphics card?

    And does this happen to all applications?

    Best of luck!
    Where did I put my coffee cup?
    dir -R /home/* | grep "coffee cup"

  6. #6

    Default Re: higher resolution means less display quality?

    sysinfo:/ calls me about the graphiccard:
    • distributor: vmware, inc.
    • model: vmware0405
    • driver: vmware


    i have made a short video with following steps:
    • firefox and dolphin @1024x768 - everythings ok
    • changing res to 1600x1200 - everything's still ok
    • re-opening ff and dolphin @1600x1200 - ugly result
    • changing res back to 1024x768 - ugly result
    • re-opening ff and dolphin - everything is fine


    LINK to the Video

    Video isn't in best quality and codec and seemes to hang sometimes - but content should be clear. It shows the really strange behavior :-/ :-)

  7. #7

    Default Re: higher resolution means less display quality?

    just a 'funny' addition. opensuse seemes to scale symbols (to a max possible minimum) and text-labels depending to the resolution. if i change the size of the vm to a very small, you will get the following 'minimalistic' result:



    just the desktop is in normal size - textlabels of windows are.. scaled

  8. #8

    Default Re: higher resolution means less display quality?

    Hello DrSarez,

    I say the video, it's a very strange.
    I've never seen something like that.
    Quote Originally Posted by DrSarez
    just a 'funny' addition. opensuse seemes to scale symbols (to a max possible minimum) and text-labels depending to the resolution. if i change the size of the vm to a very small, you will get the following 'minimalistic' result:
    Maybe it's a font problem because the font is getting scaled.
    Try change the font to a different one.

    Good luck!
    Where did I put my coffee cup?
    dir -R /home/* | grep "coffee cup"

  9. #9
    DenverD NNTP User

    Default Re: higher resolution means less display quality?

    DrSarez wrote:
    > i installed openSuse in my vmware Workstation tryed differnt
    > screen-sizes. for example here is a perfect display quality with a res
    > of 1024x768:
    > [image: http://img72.imageshack.us/img72/3825/suse1024.jpg]
    >
    > but if i change the res to 2560x1600 i get really ugly results
    > [image: http://img710.imageshack.us/img710/9984/linux2560.jpg]


    you say you are changing "resolution" but in fact you are telling your
    software to pump out pixels for a different _screen size_!

    what is your actual screen size? set it for THAT...and, then if you
    want to play with screen resolution, wiggle the dots per inch
    (DPI)...the more DPI the more smooth your 'resolution'..

    however, since you say "here is a perfect display quality with a res
    of 1024x768" if you use my first rule (If it is not broke do NOT fix
    it) you will leave it 'perfect' and find something which is broken to fix.

    --
    DenverD (Linux Counter 282315)
    CAVEAT: http://is.gd/bpoMD
    posted via NNTP w/TBird 2.0.0.23 | KDE 3.5.7 | openSUSE 10.3
    2.6.22.19-0.4-default SMP i686
    AMD Athlon 1 GB RAM | GeForce FX 5500 | ASRock K8Upgrade-760GX |
    CMedia 9761 AC'97 Audio

  10. #10

    Default Re: higher resolution means less display quality?

    Nice! The solution shouldn't be far away!

    I found an article from a guy with the same problem on slackware with xfce. he described the same thing i want to reach: a constant resolution of 'xx' dpi regardless of the resolution.

    he found also a solution for xfce i can not replicate, because i did not find a similar settingsfile for the dpi-setting. someone could map it to openSuse with KDE?

    here's the Link to the thread

    @DenverD: you pointed my problem. i have a physical 30''-screen with a res of 2560x1600 - but in the yast2/hardware-information is written under 'monitor->display' the 'vmware-emulated display' with a res of 1024x768. even if i could change the virtual display i'll get bad results with lower resolutions. so i have to stop the dynamical dpi.

    e.g. under 1024x768 the command 'xdpyinfo | grep "resolution"' delivers me the result '123x123 dots per inch'. if i switch to 2560x1600 i'll get '307x256 dots per inch'

    so i am new in linux and just worked on a debian terminal till now. no knowledge of linux-gui

    Coclusion: is there a similar solution for openSuse/KDE to fix the dpi? (i hope i tell no technical impossible things)

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