ubnutu设置设置屏幕分辨率

最新推荐文章于 2024-08-30 17:18:28 发布

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最新推荐文章于 2024-08-30 17:18:28 发布

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原文链接：http://www.cnblogs.com/rollenholt/articles/2590990.html

本文介绍如何在Ubuntu系统中手动配置显示器的分辨率，包括使用gtf命令获取所需的分辨率参数，并将这些参数添加到xorg.conf文件中，以确保系统启动时能够正确地应用所需的分辨率。

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当然我知道ubnutu有图形用户界面可以设置分辨率，但是此文将的是自己手动设置。

Ubuntu 9.04 did not detect the native resolution of my new LCD monitor which was 1440 x 900.

Fix :

1. Get the modeline for the required resolution + refresh rate using the gtf command.

 
    1desktop:~$ gtf 1440 900 75

    2 

    3  # 1440x900 @ 75.00 Hz (GTF) hsync: 70.50 kHz; pclk: 136.49 MHz

    4  Modeline "1440x900_75.00"  136.49  1440 1536 1688 1936  900 901 904940  -HSync +Vsync

The modeline is to be added to the xorg.conf file at /etc/X11/xorg.conf
Take a backup of the file before editing it.

On a fresh Ubuntu installation the file may look small like this :

 
    1#Some comments on top

    2Section "Monitor"

    3 Identifier "Configured Monitor"

    4EndSection

    5 

    6Section "Screen"

    7 Identifier "Default Screen"

    8 Monitor  "Configured Monitor"

    9 Device  "Configured Video Device"

    10EndSection

    11 

    12Section "Device"

    13 Identifier "Configured Video Device"

    14EndSection

    15 

    16Section "ServerFlags"

    17 Option "DontZap" "True"

    18EndSection

Simply add the modeline to the monitor section like this :

 
    1Section "Monitor"

    2 Identifier "Configured Monitor"

    3 Modeline "1440x900_75.00"  136.49  1440 1536 1688 1936  900 901 904 940  -HSync +Vsync

    4 Option          "PreferredMode" "1440x900_75.00"

    5EndSection

    6 

    7Section "Screen"

    8 Identifier "Default Screen"

    9 Monitor  "Configured Monitor"

    10 Device  "Configured Video Device"

    11EndSection

    12 

    13Section "Device"

    14 Identifier "Configured Video Device"

    15EndSection

    16 

    17Section "ServerFlags"

    18 Option "DontZap" "True"

    19EndSection

The option “PreferredMode” “1440x900_75.00″ is used so that it becomes the default resolution on gnome, KDE desktops and GDM and KDM i.e. the login screen. If this option is not used then there may be issues such that resolution after reboot or relogin reverts to a default like 1280 x 1200 as discussed here Bug.

Another fix could to be reconfigure X like : sudo dpkg-reconfigure xserver-xorg.

References :
1. Ubuntu Resolution Configuration
2. Forum

转载于:https://www.cnblogs.com/rollenholt/articles/2590990.html