一:树莓派官网对于HDMI 启动配置的介绍:
二:stackexchange网站相关讨论:
I want to find this grub file to edit one line of code to stop the loading dots from boot to remain in the center of my screen. My question is. Where is my /etc/default/grub file?
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Your observation is correct. Raspberry Pi does not use GRUB at all.
GRUB is not universal in the Linux world, but a bootloader for some specific hardware architectures:
- 32- and 64-bit x86 PCs, using BIOS, UEFI or Coreboot firmware
- PowerPCs
- SPARC systems
- MIPS Lemote Yeeloong systems
- certain Qemu emulation environments.
Raspberry Pi is an ARM device, which is none of the above. It has its own firmware and bootloader.
The first stage bootloader is stored in ROM within the RasPi's system-on-chip. It loads bootcode.bin
from the SD card. That will load start.elf
, which will then load config.txt
, cmdline.txt
and kernel.img
. In older versions of RasPi firmware, there used to be loader.bin
step in between bootcode.bin
and start.elf
.
More details:
https://raspberrypi.stackexchange.com/q/10489
https://www.raspberrypi.org/forums/viewtopic.php?t=6685
config.txt
settings: http://rpf.io/configtxtreadme
cmdline.txt
is the place for the Linux kernel boot options.
answered Oct 17 '18 at 8:40 telcoM
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@71GA In
/boot/config.txt
, there should be commented-out lines withhdmi_group
,hdmi_mode
,framebuffer_width
andframebuffer_height
, ready to be uncommented and adjusted as needed. See rpf.io/configtxtreadme for more info. Once the Linux kernel is up and running, there is also thefbset
command which can be used to change the display mode as needed. – telcoM Mar 21 at 7:57 ------------------回复------------------------
GRUB_GFXMODE=1280x800
andGRUB_GFXPAYLOAD_LINUX=keep
in/etc/defaults/grub
and then rebuilt the Grub withsudo update-grub
andsudo reboot
. – 71GA Mar 20 at 16:24 -------------------------提问-------------------------------------