User talk:Pnoecker/Raspberry Pi 4

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Revision as of 10:58, November 13, 2020 by Pnoecker (talk | contribs)
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root # echo "media-libs/raspberrypi-userland-bin **" >> /etc/portage/package.accept_keywords
root # echo "sys-boot/raspberrypi-firmware **" >> /etc/portage/package.accept_keywords
root # echo "sys-kernel/raspberrypi-image **" >> /etc/portage/package.accept_keywords
root # emerge raspberrypi-userland-bin raspberrypi-firmware raspberrypi-image

pi@raspberrypi:~ $ cat /boot/config.txt

  1. For more options and information see
  3. Some settings may impact device functionality. See link above for details
  1. uncomment if you get no picture on HDMI for a default "safe" mode
  2. hdmi_safe=1
  1. uncomment this if your display has a black border of unused pixels visible
  2. and your display can output without overscan


  1. uncomment the following to adjust overscan. Use positive numbers if console
  2. goes off screen, and negative if there is too much border
  3. overscan_left=16
  4. overscan_right=16
  5. overscan_top=16
  6. overscan_bottom=16
  1. uncomment to force a console size. By default it will be display's size minus
  2. overscan.
  3. framebuffer_width=1280
  4. framebuffer_height=720
  1. uncomment if hdmi display is not detected and composite is being output
  2. hdmi_force_hotplug=1
  1. uncomment to force a specific HDMI mode (this will force VGA)
  2. hdmi_group=1
  3. hdmi_mode=1
  1. uncomment to force a HDMI mode rather than DVI. This can make audio work in
  2. DMT (computer monitor) modes
  3. hdmi_drive=2
  1. uncomment to increase signal to HDMI, if you have interference, blanking, or
  2. no display
  3. config_hdmi_boost=4
  1. uncomment for composite PAL
  2. sdtv_mode=2
  1. uncomment to overclock the arm. 700 MHz is the default.
  2. arm_freq=800
  1. Uncomment some or all of these to enable the optional hardware interfaces
  2. dtparam=i2c_arm=on
  3. dtparam=i2s=on
  4. dtparam=spi=on
  1. Uncomment this to enable infrared communication.
  2. dtoverlay=gpio-ir,gpio_pin=17
  3. dtoverlay=gpio-ir-tx,gpio_pin=18
  1. Additional overlays and parameters are documented /boot/overlays/README
  1. Enable audio (loads snd_bcm2835)



  1. Enable DRM VC4 V3D driver on top of the dispmanx display stack

dtoverlay=vc4-fkms-v3d max_framebuffers=2


  1. dtoverlay=vc4-fkms-v3d
  1. NOOBS Auto-generated Settings:

pi@raspberrypi:~ $ cat /boot/cmdline.txt console=serial0,115200 console=tty1 root=/dev/mmcblk0p7 rootfstype=ext4 elevator=deadline rootwait

pi@raspberrypi:~ $ cat /boot/issue.txt Raspberry Pi reference 2020-08-20 Generated using pi-gen,, 9a3a10bf1019ebb2d59053564dc6b90068bad27d, stage5