树莓派 config.txt

树莓派开机默认配置文件：/boot/config.txt

 # For more options and information see
 # http://www.raspberrypi.org/documentation/configuration/config-txt.md
 # Some settings may impact device functionality. See link above for details

 # uncomment if you get no picture on HDMI for a default "safe" mode
 #hdmi_safe=

 # uncomment this if your display has a black border of unused pixels visible
 # and your display can output without overscan
 disable_overscan=

 # uncomment the following to adjust overscan. Use positive numbers if console
 # goes off screen, and negative if there is too much border
 #overscan_left=
 #overscan_right=
 #overscan_top=
 #overscan_bottom=

 # uncomment to force a console size. By default it will be display's size minus
 # overscan.
 #framebuffer_width=
 #framebuffer_height=

 # uncomment if hdmi display is not detected and composite is being output
 #hdmi_force_hotplug=

 # uncomment to force a specific HDMI mode (this will force VGA)
 #hdmi_group=
 #hdmi_mode=

 # uncomment to force a HDMI mode rather than DVI. This can make audio work in
 # DMT (computer monitor) modes
 #hdmi_drive=

 # uncomment to increase signal to HDMI, if you have interference, blanking, or
 # no display
 #config_hdmi_boost=

 # uncomment for composite PAL
 #sdtv_mode=

 #uncomment to overclock the arm.  MHz is the default.
 #arm_freq=

 # Uncomment some or all of these to enable the optional hardware interfaces
 #dtparam=i2c_arm=on
 #dtparam=i2s=on
 #dtparam=spi=on

 # Uncomment this to enable the lirc-rpi module
 #dtoverlay=lirc-rpi

 # Additional overlays and parameters are documented /boot/overlays/README

 # Enable audio (loads snd_bcm2835)
 dtparam=audio=on

 # NOOBS Auto-generated Settings:
 hdmi_force_hotplug=