User talk:Pnoecker/Raspberry Pi 4

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
2. http://rpf.io/configtxt
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

disable_overscan=1

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)

dtparam=audio=on

[pi4]

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

dtoverlay=vc4-fkms-v3d max_framebuffers=2

[all]

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 fsck.repair=yes rootwait

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