树莓派开机默认配置文件：/boot/config.txt
1 # For more options and information see 2 # http://www.raspberrypi.org/documentation/configuration/config-txt.md 3 # Some settings may impact device functionality. See link above for details 4 5 # uncomment if you get no picture on HDMI for a default "safe" mode 6 #hdmi_safe=1 7 8 # uncomment this if your display has a black border of unused pixels visible 9 # and your display can output without overscan 10 disable_overscan=1 11 12 # uncomment the following to adjust overscan. Use positive numbers if console 13 # goes off screen, and negative if there is too much border 14 #overscan_left=16 15 #overscan_right=16 16 #overscan_top=16 17 #overscan_bottom=16 18 19 # uncomment to force a console size. By default it will be display's size minus 20 # overscan. 21 #framebuffer_width=1280 22 #framebuffer_height=720 23 24 # uncomment if hdmi display is not detected and composite is being output 25 #hdmi_force_hotplug=1 26 27 # uncomment to force a specific HDMI mode (this will force VGA) 28 #hdmi_group=1 29 #hdmi_mode=1 30 31 # uncomment to force a HDMI mode rather than DVI. This can make audio work in 32 # DMT (computer monitor) modes 33 #hdmi_drive=2 34 35 # uncomment to increase signal to HDMI, if you have interference, blanking, or 36 # no display 37 #config_hdmi_boost=4 38 39 # uncomment for composite PAL 40 #sdtv_mode=2 41 42 #uncomment to overclock the arm. 700 MHz is the default. 43 #arm_freq=800 44 45 # Uncomment some or all of these to enable the optional hardware interfaces 46 #dtparam=i2c_arm=on 47 #dtparam=i2s=on 48 #dtparam=spi=on 49 50 # Uncomment this to enable the lirc-rpi module 51 #dtoverlay=lirc-rpi 52 53 # Additional overlays and parameters are documented /boot/overlays/README 54 55 # Enable audio (loads snd_bcm2835) 56 dtparam=audio=on 57 58 # NOOBS Auto-generated Settings: 59 hdmi_force_hotplug=1