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Thread: HOW-TO: Fix Your Monitor Refresh Rate

  1. #11
    Join Date
    Jun 2005
    Location
    Malmö, Sweden
    Beans
    42
    Distro
    Ubuntu 6.06

    Re: HOW-TO: Fix Your Monitor Refresh Rate

    Quote Originally Posted by wolfchri
    It is close to comical that we need an how-to in the year 2005 in order to change the screen refresh rate. As much as I like Ubuntu, that is definitely a missing feature, especially since Ubuntu aims for contries in Africa etc. that do not have the latest LCD screens but old CRTs without plug and play capabilities.

    A tool to choose a monitor/screen/screen type is definitely needed, such as SaX or in the Mandriva Control Center. Why not just port one of these tools (I think, there is even one in the Debian installer) to Ubuntu - I am sure that would not be too difficult.

    I would agree 100% with that post.

    And this info from the wiki is what worked nice and simple for me :

    https://wiki.ubuntu.com//FixVideoResolutionHowto
    Last edited by WetWilly; October 19th, 2005 at 01:28 AM.

  2. #12
    Join Date
    Sep 2005
    Beans
    71
    Distro
    Ubuntu Breezy 5.10

    Re: HOW-TO: Fix Your Monitor Refresh Rate

    i agree too that it would be nice, even if in the system>prefrences>screen resolution it let you go past what you think is safe then gave 10 seconds to comfirm it works like the windows or sax2 versions. im running a 21" crt and at 60hz it makes my eyes bleed.
    TFT monitors in the uk are either expensive or not as good as a crt in picture quality so im sure i will have a crt for along time.

    WetWilly that howto is for screen resolution, this is for refresh rates
    Last edited by Samuel; October 19th, 2005 at 04:16 PM.

  3. #13
    Join Date
    Nov 2004
    Location
    Munich, Germany
    Beans
    70
    Distro
    Ubuntu 9.10 Karmic Koala

    Re: HOW-TO: Fix Your Monitor Refresh Rate

    I have created a little step-by-step blend of several how-tos on this issue (too low screen refresh rate) for absolute beginners.

    Can be found here; feel free to copy it to the Ubuntu Wiki if it is good enough (I have no idea how to do that myself):

    http://vale.homelinux.net/wordpress/?p=32

    Let me know if it works for you, I hope it helps. If I would have more time, I would try to port the screen selector from Yast myself. I am considering a bounty, since my bugreport on this issue also led to nowhere

  4. #14
    Join Date
    Nov 2005
    Beans
    1

    Re: HOW-TO: Fix Your Monitor Refresh Rate

    in my kubuntu box, i need to restart my PC in order to get the right configuration and refresh rate, strange but works

  5. #15
    Join Date
    Mar 2006
    Location
    Athens, Greece
    Beans
    Hidden!
    Distro
    Ubuntu 8.10 Intrepid Ibex

    Re: HOW-TO: Fix Your Monitor Refresh Rate

    works like a charm! thumbs up!

  6. #16
    Join Date
    May 2006
    Location
    United Kingdom
    Beans
    3
    Distro
    Ubuntu Breezy 5.10

    Re: HOW-TO: Fix Your Monitor Refresh Rate

    Quote Originally Posted by Samuel
    This How-to is for people who want to change the refresh rate and/or resolution for their monitor

    **i have only tried this on nvidia cards

    **use this info at your own risk, i will take no responsibility for damaged hardware

    First we want to get the modeline for our desired resolution and refresh rate, to do this we head to www.sh.nu/nvidia/gtf.php

    At the top of the page is a table, input the settings you want into it, for example, i want to run my monitor @ 1280x1024 85refresh rate, so i enter into the first box marked X: 1280 in the second box marked y: i enter 1024 and the 3rd box i enter 85 (my desired refresh rate)

    then i click the Generate modeline button and the output is as follows:
    # 1280x1024 @ 85.00 Hz (GTF) hsync: 91.38 kHz; pclk: 159.36 MHz
    Modeline "1280x1024_85.00" 159.36 1280 1376 1512 1744 1024 1025 1028 1075 -HSync +Vsync

    open a new terminal and type the following:
    sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf_backup
    sudo gedit /etc/X11/xorg.conf

    in the xorg.conf document find:

    Section "Monitor"

    and at the bottom of this section copy and paste the modeline you got from the website you visited, mine looks like this:

    Section "Monitor"
    Identifier "Generic Monitor"
    Option "DPMS"
    Modeline "1280x1024_85.00" 159.36 1280 1376 1512 1744 1024 1025 1028 1075 -HSync +Vsync
    EndSection

    now save the file and restart x by pressing ctrl alt and backspace

    if it takes you to a command prompt just log in and type startx

    your monitor should now be running at your chosen settings

    note: this is my first how-to so i would appreciate any feedback on it from you experts, i am still a linux newb but this is a small problem i managed to figure out and hope it can help others like the community has helped me.
    I followed your instructions and produced an outcome that looked like yours, but now the os doesn't work.... I got some blue screens and some messages about things not being set-up correctly...

    God this was sooo much easier in Windows...

    Now the OS wont start up at alll!! I made a back-up of the file like you said, but it doesn't seem to have helped any... I keep getting these blue screens with error messages on saying that the X server failed to start my graphical interface..? It asks if I want to view the server output, but the output means nothing to me, so I can't diagnose anything and even if I could I would know how to fix anything!

    Do I have to reinstall the whole OS again, or is there another solution..?

    ------------------------------------------------------------------------------------------
    EDIT: Don't bother, I'm not going to wait for a responce, I'll just try to re-install the OS again... If it breaks next time I try this fix I think I'll just install Win2k again... I guess Linux isn't for everybody...
    ------------------------------------------------------------------------------------------
    Last edited by grandiose; May 5th, 2006 at 08:40 AM.

  7. #17
    Join Date
    May 2006
    Beans
    1

    Re: HOW-TO: Fix Your Monitor Refresh Rate

    You be da man! Thanks for your efforts.

    Quote Originally Posted by wolfchri
    I have created a little step-by-step blend of several how-tos on this issue (too low screen refresh rate) for absolute beginners.

    Can be found here; feel free to copy it to the Ubuntu Wiki if it is good enough (I have no idea how to do that myself):

    http://vale.homelinux.net/wordpress/?p=32

    Let me know if it works for you, I hope it helps. If I would have more time, I would try to port the screen selector from Yast myself. I am considering a bounty, since my bugreport on this issue also led to nowhere

  8. #18
    Join Date
    Nov 2006
    Beans
    3

    Re: HOW-TO: Fix Your Monitor Refresh Rate

    I must admit, I use windows XP for detecting monitor settings.
    (I have a KVM switch with XP on one box, and xubuntu on the other)

    In XP, I right click on the desktop, select
    properties->settings->
    change the bit depth to 32 (if your moniroty looks good using that setting)
    advanced->monitor

    change the refresh rate till its nice, then using your monitors built-in menu

    search the different controls until you can read off the exact refresh rate, copy them down

    head off to xubuntu land and stick those values into /etc/X11/xorg.conf and away you go.

    On my newly installed edgy box I had to create a section for the 32 bit depth and add a greater resolution of 1024x768, as well as setting the refresh rates. It worked like a charm.
    (I had tried looking around and running this that and the other first of course)

    i hope that helps someone, still make a backup. and write down the commands needed to get you back to the old settings

    backup: cp /etc/X11/xorg.conf /etc/X11/xorg.conf.bak

    restore (blind)
    cp /etc/X11/xorg.conf.bak /etc/X11/xorg.conf
    [ctrl]+[alt]+[backspace]
    startx


  9. #19
    Join Date
    Oct 2007
    Beans
    2

    Question Re: HOW-TO: Fix Your Monitor Refresh Rate

    Thank you wolfchri!!!
    Now I can at least use a refresh rate of 75.
    But I found it realy strange that some of the options that used to work at windows don't seem to work at linux.
    Is there anyway to install a monitor driver?
    Last edited by janub; October 3rd, 2007 at 01:05 PM. Reason: Found the answer!

  10. #20
    Join Date
    May 2007
    Location
    Maine
    Beans
    51
    Distro
    Ubuntu 7.04 Feisty Fawn

    Re: HOW-TO: Fix Your Monitor Refresh Rate

    I've upgraded to the latest Ubuntu and had this slight quiver in the edges.
    I changed the refresh rate to see if this would help. This was a disastrous choice. I got an out of range blue screen and no way to default. I'm now logged in under another user because mine will just give me the blue out of range screen. Nice job H.B.

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