第一版的树莓派，买回来一直都没有花时间折腾，不知道每天在忙什么。最近终于有点时间。记录一下。
开始是用官方站的NOOBS，但是始终无法启动，怀疑是RP问题。后来用dd重新做了一张raspbian（参考：http://elinux.org/RPi_Easy_SD_Card_Setup）。
启动后总是黑屏，怀疑是hdmi转vga的线的问题，然后从某宝又买了一根。后来发现是config.txt的设置问题，参考了这篇文章修改后，终于开机成功。
开机后发现只要光标移动就会闪屏，修改了无数次config.txt都未果，后来发现是电源供电问题 – hdmi转vga线会占用一部分电压，后来想起来ipad的充电电源貌似电流大一些，换上以后居然不闪了。一切正常。
然后就是配置网络：（摘自树莓派论坛）
1.配置ip地址
编辑sudo nano /etc/network/interfaces
自动获取ip的配置：
auto eth0
allow-hotplug eth0
iface eth0 inet dhcp
手动配置ip：
auto eth0
iface eth0 inet static
address 192.168.1.7
netmask 255.255.255.0
gateway 192.168.0.254
2.配置DNS
编辑 sudo nano /etc/resolv.conf
domain lan
search lan
nameserver 192.168.1.1
nameserver 192.168.99.100
注：nameserver 后面的ip就是dns服务器，根据自己的运营商情况填吧
更新raspbian：
sudo apt-get install rpi-update具体参考：https://github.com/Hexxeh/rpi-update
后面就慢慢折腾吧。
附个分辨率的映射：
These values are valid if hdmi_group=2 (DMT)
hdmi_mode=1 640×350 85Hz
hdmi_mode=2 640×400 85Hz
hdmi_mode=3 720×400 85Hz
hdmi_mode=4 640×480 60Hz
hdmi_mode=5 640×480 72Hz
hdmi_mode=6 640×480 75Hz
hdmi_mode=7 640×480 85Hz
hdmi_mode=8 800×600 56Hz
hdmi_mode=9 800×600 60Hz
hdmi_mode=10 800×600 72Hz
hdmi_mode=11 800×600 75Hz
hdmi_mode=12 800×600 85Hz
hdmi_mode=13 800×600 120Hz
hdmi_mode=14 848×480 60Hz
hdmi_mode=15 1024×768 43Hz DO NOT USE
hdmi_mode=16 1024×768 60Hz
hdmi_mode=17 1024×768 70Hz
hdmi_mode=18 1024×768 75Hz
hdmi_mode=19 1024×768 85Hz
hdmi_mode=20 1024×768 120Hz
hdmi_mode=21 1152×864 75Hz
hdmi_mode=22 1280×768 reduced blanking
hdmi_mode=23 1280×768 60Hz
hdmi_mode=24 1280×768 75Hz
hdmi_mode=25 1280×768 85Hz
hdmi_mode=26 1280×768 120Hz reduced blanking
hdmi_mode=27 1280×800 reduced blanking
hdmi_mode=28 1280×800 60Hz
hdmi_mode=29 1280×800 75Hz
hdmi_mode=30 1280×800 85Hz
hdmi_mode=31 1280×800 120Hz reduced blanking
hdmi_mode=32 1280×960 60Hz
hdmi_mode=33 1280×960 85Hz
hdmi_mode=34 1280×960 120Hz reduced blanking
hdmi_mode=35 1280×1024 60Hz
hdmi_mode=36 1280×1024 75Hz
hdmi_mode=37 1280×1024 85Hz
hdmi_mode=38 1280×1024 120Hz reduced blanking
hdmi_mode=39 1360×768 60Hz
hdmi_mode=40 1360×768 120Hz reduced blanking
hdmi_mode=41 1400×1050 reduced blanking
hdmi_mode=42 1400×1050 60Hz
hdmi_mode=43 1400×1050 75Hz
hdmi_mode=44 1400×1050 85Hz
hdmi_mode=45 1400×1050 120Hz reduced blanking
hdmi_mode=46 1440×900 reduced blanking
hdmi_mode=47 1440×900 60Hz
hdmi_mode=48 1440×900 75Hz
hdmi_mode=49 1440×900 85Hz
hdmi_mode=50 1440×900 120Hz reduced blanking
hdmi_mode=51 1600×1200 60Hz
hdmi_mode=52 1600×1200 65Hz
hdmi_mode=53 1600×1200 70Hz
hdmi_mode=54 1600×1200 75Hz
hdmi_mode=55 1600×1200 85Hz
hdmi_mode=56 1600×1200 120Hz reduced blanking
hdmi_mode=57 1680×1050 reduced blanking
hdmi_mode=58 1680×1050 60Hz
hdmi_mode=59 1680×1050 75Hz
hdmi_mode=60 1680×1050 85Hz
hdmi_mode=61 1680×1050 120Hz reduced blanking
hdmi_mode=62 1792×1344 60Hz
hdmi_mode=63 1792×1344 75Hz
hdmi_mode=64 1792×1344 120Hz reduced blanking
hdmi_mode=65 1856×1392 60Hz
hdmi_mode=66 1856×1392 75Hz
hdmi_mode=67 1856×1392 120Hz reduced blanking
hdmi_mode=68 1920×1200 reduced blanking
hdmi_mode=69 1920×1200 60Hz
hdmi_mode=70 1920×1200 75Hz
hdmi_mode=71 1920×1200 85Hz
hdmi_mode=72 1920×1200 120Hz reduced blanking
hdmi_mode=73 1920×1440 60Hz
hdmi_mode=74 1920×1440 75Hz
hdmi_mode=75 1920×1440 120Hz reduced blanking
hdmi_mode=76 2560×1600 reduced blanking
hdmi_mode=77 2560×1600 60Hz
hdmi_mode=78 2560×1600 75Hz
hdmi_mode=79 2560×1600 85Hz
hdmi_mode=80 2560×1600 120Hz reduced blanking
hdmi_mode=81 1366×768 60Hz
hdmi_mode=82 1080p 60Hz
hdmi_mode=83 1600×900 reduced blanking
hdmi_mode=84 2048×1152 reduced blanking
hdmi_mode=85 720p 60Hz
hdmi_mode=86 1366×768 reduced blanking
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