<!--[if !supportLists]-->1. <!--[endif]-->How to check the
dpi settings?
CentOs
:
1.
Use conmand : $ xdpyinfo |grep resolution(the original dimension is 1024*768 by
command xdpyinfo |grep dimension)
The
original DPI (101 108 )
2.
DPI formula W_DPI = (dimension *
2.54)/Width
H_DPI = (dimension * 2.54)/Height
3.
Use the command of vidtune to check whether is support to setting DPI
<!--[if !supportLists]-->2. <!--[endif]-->How to set
the dpi settings?
Centos
Now
we want to change the DPI to 120 120.
So
according to formula , the Width = 1024 * 2.54 /120 =
21.67 cm
Height = 768 * 2.54 /120 = 16.25 cm
2.Centos:
1.Make sure the information of “Monitor ” use by os (see the file by command:
$more /var/log/Xorg.0.log )
From
the log you can see the Monitor information (search key word “Monitor”)
Such
2.vi /etc/X11/xorg.conf
3. add the content as below :
Section "Monitor"
Identifier
"Montior0"
ModelName
"XX" (the value of XX can see from /var/log/Xorg.0.log )
DisplaySize
217 163
EndSection
Section "Screen"
Identifier
"Screen0"
Device
"Device0
Monitor "Monitor0" (The value is the
same as monitor identifier)
DefaultDepth 24
SubSection
"Display"
Depth 24
Modes "1024X768”
EndSubSection
EndSection
4.reboot the os
4. Check the dpi result by command $ xdpyinfo |grep resolution
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