Menu Home

使用modeline强制屏幕分辨率

By on • ( 10 Comments )

OS：ubuntu 12.04

生成Modeline

cvt 1440 900 60  #命令格式：横向分辨率  纵向分辨率  刷新率

输出结果可能如下，其中Modeline行即是我们需要的：

# 1440x900 59.89 Hz (CVT 1.30MA) hsync: 55.93 kHz; pclk: 106.50 MHz
Modeline "1440x900_60.00"  106.50  1440 1528 1672 1904  900 903 909 934 -hsync +vsync

查看系统当前的屏幕输出端口

xrandr

我的输出结果如下：

HDMI-1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm x 268mm
   1920x1080      60.0*+
   1680x1050      60.0  
   1600x900       60.0  
   1280x1024      75.0     60.0  
   1280x800       59.8  
   1280x720       60.0  
   1024x768       75.0     60.0  
   800x600        75.0     60.3  
   640x480        75.0     59.9

添加新的Modeline

sudo xrandr --newmode "1440x900_60.00"  106.50  1440 1528 1672 1904  900 903 909 934 -hsync +vsync #这里的参数是我们第一步中得到的

再次运行xrandr查看这个Modeline是否已经写进去了：

xrandr

输出如下：

HDMI-1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm x 268mm
   1920x1080      60.0*+
   1680x1050      60.0  
   1600x900       60.0  
   1280x1024      75.0     60.0  
   1280x800       59.8  
   1280x720       60.0  
   1024x768       75.0     60.0  
   800x600        75.0     60.3  
   640x480        75.0     59.9  
  1440x900_60.00 (0x298)  106.5MHz
        h: width  1440 start 1528 end 1672 total 1904 skew    0 clock   55.9KHz
        v: height  900 start  903 end  909 total  934           clock   59.9Hz

从上面的结果最后可以看到已经有了1440×900这个分辨率，刷新率是60，有的显示器可能上不去60，会黑屏，那可以适当降低刷新率，以减小带宽。

设置分辨率

sudo xrandr --addmode HDMI-1 1440x900_60.00
sudo xrandr --output HDMI-1 --mode 1440x900_60.00

查看是否设置成功

sudo xrandr

输出结果：

HDMI-1 connected 1440x900+0+0 (normal left inverted right x axis y axis) 477mm x 268mm
   1920x1080      60.0*+
   1680x1050      60.0  
   1600x900       60.0  
   1280x1024      75.0     60.0  
   1280x800       59.8  
   1280x720       60.0  
   1024x768       75.0     60.0  
   800x600        75.0     60.3  
   640x480        75.0     59.9  
  1440x900_60.00 (0x298)  106.5MHz
        h: width  1440 start 1528 end 1672 total 1904 skew    0 clock   55.9KHz
        v: height  900 start  903 end  909 total  934           clock   59.9Hz

第一行显示当前分辨率为1440×900 。

其它尝试

如果经过上面的步骤还是不成功，那么可以试试加上下面的几个选项：

Section "Device"
    Option         "UseEDID" "False"
    Option         "UseEDIDFreqs" "False"
    Option         "ExactModeTimingsDVI" "True"
    Option         "ModeValidation"  "NoTotalSizeCheck, NoDFPNativeResolutionCheck, NoEdidModes, NoMaxPClkCheck, NoVertRefreshCheck, NoHorizSyncCheck, NoEdidMaxPClkCheck"

EndSection

这些选项的具体含义，请查看 这里

10 replies ›

  3. Failing to suspend medication in the following
    scenarios can have serious implications: after adverse side
    effects have occurred; during, after, or before surgery; after new illnesses, conditions, or
    symptoms develop; or while someone is pregnant or breast feeding.
    When this happens, a personal injury attorney may help
    you file claims to carry both sides responsible for the harm in charge
    of their actions. These items will probably incorporate your vehicle insurance policy,
    photographs, police reports, and then for any other relevant evidence you could have that is
    tightly related to your case.
    http://www.02pa.com/website/main/member.asp?action=view&memName=JuniorKej247028

  7. It is going to be interesting to find out whether
    the list will continue to favor the label of Google prominent position Sklik advertising.
    Place the keyword inside the “alt” attribute as well as the “title”
    attribute about the image tag. Customer service becomes critical for products where customers find easy
    substitutes inside the market. her latest blog

  9. find this
    Aw, this was a really nice post. Taking the time
    and actual effort to make a very good article… but what can I
    say… I hesitate a whole lot and never manage to get nearly anything done.
    https://is.gd/orxZ0x

  10. Pingback: nvidia显卡的xorg配置 多屏显示

Leave a Reply

Your email address will not be published.