Changing to unlisted screen resolution on Fedora 20.

Posted on 2014-08-30
Last Modified: 2014-08-30

My monitor's native resolution os 1680x1050.
Fedora core 20, doesn't list such resolution in Display Configuration utility.

So, the task is to forcibly change screen resolution to the native resolution.
Which files, and how should I edit?

Thank you, Dear experts.
Question by:Nusrat Nuriyev
    LVL 87

    Accepted Solution

    First open a terminal and input:

    gtf 1680 1050 60

    that will give you a list of values which you can make a note of.

    Then run xrandr from your terminal, which will show you your current setup and what output is used. After that you can use xrandr --help which will give you a list of options and syntax you can use with the xrandr command.

    You can then use

    xrandr --newmode 1680x1050_60 "ValuesFromYourEarlierOutput"
    xrandr --addmode "YourOutput" 1680x1050_60
    xrandr --output "YourOutput" --mode 1680x1050_60

    to add the newmode and change the display to that mode.

    Author Comment

    by:Nusrat Nuriyev
    cvt 1680 1050

    Open in new window

    # 1680x1050 59.95 Hz (CVT 1.76MA) hsync: 65.29 kHz; pclk: 146.25 MHz
    Modeline "1680x1050_60.00"  146.25  1680 1784 1960 2240  1050 1053 1059 1089 -hsync +vsync


    Open in new window

    Screen 0: minimum 64 x 64, current 1680 x 1050, maximum 32000 x 32000
    VBOX0 connected primary 1680x1050+0+0 0mm x 0mm

    xrandr --newmode "1680x1050" 146.25  1680 1784 1960 2240  1050 1053 1059 1089 -hsync +vsync

    Open in new window

    no output means ok

    xrandr --addmode VBOX0 "1680x1050"

    Open in new window

    xrandr --output VBOX0 --mode 1680x1050

    Open in new window

    Good source to use:

    Author Comment

    by:Nusrat Nuriyev
    Coordinated Video Timings (VESA-2003-9) is a standard by VESA which defines the timings of the component video signal. Initially intended for use by computer monitors and video cards, the standard made its way into consumer televisions.

    Dear rindi, what do timings mean?

    Author Comment

    by:Nusrat Nuriyev
    1680x1050 (0x1b7)  146.2MHz -HSync +VSync *current
            h: width  1680 start 1784 end 1960 total 2240 skew    0 clock   65.3KHz
            v: height 1050 start 1053 end 1059 total 1089           clock   60.0Hz

    What does start, end, total mean?

    Author Comment

    by:Nusrat Nuriyev
    I've requested that this question be closed as follows:

    Accepted answer: 500 points for rindi's comment #a40294452
    Assisted answer: 0 points for Nusrat Nuriyev's comment #a40294798

    for the following reason:

    Good answer.

    Author Closing Comment

    by:Nusrat Nuriyev
    pretty nice description

    Featured Post

    How to run any project with ease

    Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
    - Combine task lists, docs, spreadsheets, and chat in one
    - View and edit from mobile/offline
    - Cut down on emails

    Join & Write a Comment

    rdate is a Linux command and the network time protocol for immediate date and time setup from another machine. The clocks are synchronized by entering rdate with the -s switch (command without switch just checks the time but does not set anything). …
    The purpose of this article is to demonstrate how we can use conditional statements using Python.
    Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
    Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

    734 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    24 Experts available now in Live!

    Get 1:1 Help Now