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部分摘自：樹莓派實驗室-自定義樹莓派的顯示分辨率

前言???

????config.txt中默認設置在大部分的硬件系統下都能很好地工作，但是視頻輸出常常出現問題。這個問題產生的主要原因是過掃描（overscan）和欠掃描，尤其是在使用復合視頻輸出的時候。

用戶可以通過設置/boot/config.txt來解決這個問題。

1、使用文本編輯器（如nano）打開config.txt

~$nano?/boot/config.txt

2、修改overscan選項

#去掉下面的注釋符來調整overscan（過掃描）。
#如果控制臺跑出屏幕，請使用正數。
#如果鑲邊太大，請使用負數。
overscan_left=10
overscan_right=10
overscan_top=0
overscan_bottom=0

3、設置分辨率

# uncomment to force a specific HDMI mode (here we are forcing 1366*768(DMT) for 康佳led32IS97N!)

#hdmi_group有兩個模式：CEA（電視規格分辨率<1>）、DMT（計算機顯示器分辨率<2>）

#hdmi_mode對應的是具體想要調整的分辨率（具體見附錄）

#hdmi_ignore_edid是命令樹莓派不檢測HDMI設備的任何信息，只按照我們指定的分辨率輸出。

#如果不加，樹莓派可能仍會“自作聰明”的檢測HDMI設備的分辨率，結果造成我們設置的分辨率無效。

hdmi_group=2

hdmi_mode=86

hdmi_ignore_edid=0xa5000080

附錄

CEA分辨率

以下是CEA規定的電視規格分辨率。這些分辨率的hdmi_group=1。

hdmi_mode=1????VGA hdmi_mode=2????480p??60Hz hdmi_mode=3????480p??60Hz??H hdmi_mode=4????720p??60Hz hdmi_mode=5????1080i?60Hz hdmi_mode=6????480i??60Hz hdmi_mode=7????480i??60Hz??H hdmi_mode=8????240p??60Hz hdmi_mode=9????240p??60Hz??H hdmi_mode=10???480i??60Hz??4x hdmi_mode=11???480i??60Hz??4x?H hdmi_mode=12???240p??60Hz??4x hdmi_mode=13???240p??60Hz??4x?H hdmi_mode=14???480p??60Hz??2x hdmi_mode=15???480p??60Hz??2x?H hdmi_mode=16???1080p?60Hz hdmi_mode=17???576p??50Hz hdmi_mode=18???576p??50Hz??H hdmi_mode=19???720p??50Hz hdmi_mode=20???1080i?50Hz hdmi_mode=21???576i??50Hz hdmi_mode=22???576i??50Hz??H hdmi_mode=23???288p??50Hz hdmi_mode=24???288p??50Hz??H hdmi_mode=25???576i??50Hz??4x hdmi_mode=26???576i??50Hz??4x?H hdmi_mode=27???288p??50Hz??4x hdmi_mode=28???288p??50Hz??4x?H hdmi_mode=29???576p??50Hz??2x hdmi_mode=30???576p??50Hz??2x?H hdmi_mode=31???1080p?50Hz hdmi_mode=32???1080p?24Hz hdmi_mode=33???1080p?25Hz hdmi_mode=34???1080p?30Hz hdmi_mode=35???480p??60Hz??4x hdmi_mode=36???480p??60Hz??4xH hdmi_mode=37???576p??50Hz??4x hdmi_mode=38???576p??50Hz??4x?H hdmi_mode=39???1080i?50Hz??reduced?blanking hdmi_mode=40???1080i?100Hz hdmi_mode=41???720p??100Hz hdmi_mode=42???576p??100Hz hdmi_mode=43???576p??100Hz?H hdmi_mode=44???576i??100Hz hdmi_mode=45???576i??100Hz?H hdmi_mode=46???1080i?120Hz hdmi_mode=47???720p??120Hz hdmi_mode=48???480p??120Hz hdmi_mode=49???480p??120Hz?H hdmi_mode=50???480i??120Hz hdmi_mode=51???480i??120Hz?H hdmi_mode=52???576p??200Hz hdmi_mode=53???576p??200Hz?H hdmi_mode=54???576i??200Hz hdmi_mode=55???576i??200Hz?H hdmi_mode=56???480p??240Hz hdmi_mode=57???480p??240Hz?H hdmi_mode=58???480i??240Hz hdmi_mode=59???480i??240Hz?H H?means?16:9?variant?(of?a?normally?4:3?mode). 2x?means?pixel?doubled?(i.e.?higher?clock?rate,?with?each?pixel?repeated?twice) 4x?means?pixel?quadrupled?(i.e.?higher?clock?rate,?with?each?pixel?repeated?four?times)

DMT分辨率

以下是計算機顯示器使用的分辨率。這些分辨率的hdmi_group=2。

hdmi_mode=1????640x350???85Hz hdmi_mode=2????640x400???85Hz hdmi_mode=3????720x400???85Hz hdmi_mode=4????640x480???60Hz hdmi_mode=5????640x480???72Hz hdmi_mode=6????640x480???75Hz hdmi_mode=7????640x480???85Hz hdmi_mode=8????800x600???56Hz hdmi_mode=9????800x600???60Hz hdmi_mode=10???800x600???72Hz hdmi_mode=11???800x600???75Hz hdmi_mode=12???800x600???85Hz hdmi_mode=13???800x600???120Hz hdmi_mode=14???848x480???60Hz hdmi_mode=15???1024x768??43Hz??DO?NOT?USE hdmi_mode=16???1024x768??60Hz hdmi_mode=17???1024x768??70Hz hdmi_mode=18???1024x768??75Hz hdmi_mode=19???1024x768??85Hz hdmi_mode=20???1024x768??120Hz hdmi_mode=21???1152x864??75Hz hdmi_mode=22???1280x768????????reduced?blanking hdmi_mode=23???1280x768??60Hz hdmi_mode=24???1280x768??75Hz hdmi_mode=25???1280x768??85Hz hdmi_mode=26???1280x768??120Hz?reduced?blanking hdmi_mode=27???1280x800????????reduced?blanking hdmi_mode=28???1280x800??60Hz hdmi_mode=29???1280x800??75Hz hdmi_mode=30???1280x800??85Hz hdmi_mode=31???1280x800??120Hz?reduced?blanking hdmi_mode=32???1280x960??60Hz hdmi_mode=33???1280x960??85Hz hdmi_mode=34???1280x960??120Hz?reduced?blanking hdmi_mode=35???1280x1024?60Hz hdmi_mode=36???1280x1024?75Hz hdmi_mode=37???1280x1024?85Hz hdmi_mode=38???1280x1024?120Hz?reduced?blanking hdmi_mode=39???1360x768??60Hz hdmi_mode=40???1360x768??120Hz?reduced?blanking hdmi_mode=41???1400x1050???????reduced?blanking hdmi_mode=42???1400x1050?60Hz hdmi_mode=43???1400x1050?75Hz hdmi_mode=44???1400x1050?85Hz hdmi_mode=45???1400x1050?120Hz?reduced?blanking hdmi_mode=46???1440x900????????reduced?blanking hdmi_mode=47???1440x900??60Hz hdmi_mode=48???1440x900??75Hz hdmi_mode=49???1440x900??85Hz hdmi_mode=50???1440x900??120Hz?reduced?blanking hdmi_mode=51???1600x1200?60Hz hdmi_mode=52???1600x1200?65Hz hdmi_mode=53???1600x1200?70Hz hdmi_mode=54???1600x1200?75Hz hdmi_mode=55???1600x1200?85Hz hdmi_mode=56???1600x1200?120Hz?reduced?blanking hdmi_mode=57???1680x1050???????reduced?blanking hdmi_mode=58???1680x1050?60Hz hdmi_mode=59???1680x1050?75Hz hdmi_mode=60???1680x1050?85Hz hdmi_mode=61???1680x1050?120Hz?reduced?blanking hdmi_mode=62???1792x1344?60Hz hdmi_mode=63???1792x1344?75Hz hdmi_mode=64???1792x1344?120Hz?reduced?blanking hdmi_mode=65???1856x1392?60Hz hdmi_mode=66???1856x1392?75Hz hdmi_mode=67???1856x1392?120Hz?reduced?blanking hdmi_mode=68???1920x1200???????reduced?blanking hdmi_mode=69???1920x1200?60Hz hdmi_mode=70???1920x1200?75Hz hdmi_mode=71???1920x1200?85Hz hdmi_mode=72???1920x1200?120Hz?reduced?blanking hdmi_mode=73???1920x1440?60Hz hdmi_mode=74???1920x1440?75Hz hdmi_mode=75???1920x1440?120Hz?reduced?blanking hdmi_mode=76???2560x1600???????reduced?blanking hdmi_mode=77???2560x1600?60Hz hdmi_mode=78???2560x1600?75Hz hdmi_mode=79???2560x1600?85Hz hdmi_mode=80???2560x1600?120Hz?reduced?blanking hdmi_mode=81???1366x768??60Hz hdmi_mode=82???1080p?????60Hz hdmi_mode=83???1600x900????????reduced?blanking hdmi_mode=84???2048x1152???????reduced?blanking hdmi_mode=85???720p??????60Hz hdmi_mode=86???1366x768????????reduced?blanking

轉載于:https://my.oschina.net/tateyang/blog/617023

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