Raspberry Pi Stack Exchange
Raspberry Pi Stack Exchange

Questions tagged [cmdline.txt]

cmdline.txt is a file for passing arguments to the Linux kernel during the boot process.

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Change/reset password WITHOUT monitor/keyboard

I forgot the password to my Pi, but don't have access to a compatible monitor/keyboard. I've seen methods like these but they all involve editing cmdline.txt and then booting with a monitor and keyboard attached to run passwd pi from the main…
Luke M
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What is the default cmdline.txt?

My Raspbian Pi crashes to a Kernel panic when I start it up, and it suggested somewhere that an invalid cmdline.txt can cause this. What is in the cmdline.txt by default?
Matthew
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Disabling rainbow splash screen does not work

According to elinux, I should be able to disable the rainbow splash screen by setting this option in the /boot/cmdline.txt file: disable_splash if set to 1, avoids the rainbow splash screen on boot My cmdline.txt looks like…
PhilBot
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What is the default cmdline.txt for Raspberry Pi 4

I need to know the default contents of the cmdline.txt file for a Raspberry Pi 4. I was following an old tutorial about setting up a gps module. The tutorial had me change the contents cmdline.txt. Only after I made the change and the RPi4 failed to…
Mike C.
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Why are my changes to cmdline.txt ignored?

I'm using a SD-card with raspian (with /boot-partition + the rootfs). I compiled my own kernel and now I would like to boot with nfsroot. I've added the following line into the cmdline.txt: dwc_otg.lpm_enable=0 console=ttyAMA0,115200…
Patrick B.
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7 answers

Where is cmdline.txt located on the NOOBS SD card?

I need to reset a forgotten RPI OS password. In order to do that I need to insert the SD card to the computer and edit the cmdline.txt file. It is not anywhere on the SD card root folder or any of the subfolders. These are the files that I can find…
PrashanD
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How to change the kernel commandline for ArchLinuxARM on Raspberry Pi effectly?

I'm using the raspberry pi with the latest ArchLinuxARM image. I'm having issues with the linux kernel and it randomly panics with 'kernel paging request' errors. I've found a solution to enable slub debugging in the linxu kernel here and here which…
q9f
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How do I reset the lost password of a Pi 4 running Ubuntu server?

I would like to reset the password of my raspberry pi 4 4gb running Ubuntu server 20.04, most tutorials involve adding init=/bin/sh to cmdline.txt, however when I do this I get a kernel panic. Roughly along the lines of: /bin/sh: splash: No such…
OskarZyg
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What is the difference between adding 'ro' to /boot/cmdline.txt vs /etc/fstab?

I'm setting up a read-only filesystem and some of the guides I have read say to add fastboot noswap ro to /boot/cmdline.txt, others don't. All of them mention adding ro to /etc/fstab though. Is there a difference? I haven't been able to find any…
Pathead
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fswebcam /boot/cmdline.txt interaction

Occasionally fswebcam -r 640x480 -S10 image.jpg would produce an Error selecting input 0 VIDIOC_S_INPUT: Device or resource busy error on my RPi 3. I googled around a bit. I got some hits suggesting adding dwc_otg.fiq_fsm_mask=0x3 to the…
Kris Mclean
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2 answers

raspbian stretch overrides cmdline.txt kernel.hostname parameter

i'm building an embedded prototyp with a raspberry pi 3b+ and its booting via pxe from the network read only. Multiple devices share the same root file system and just the boot folders are customized for every pi. I want to configure all hostnames…
Artur
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1 answer

Set a static IP address for wlan0 from /boot partition of Raspberry Pi on Raspbian Stretch Lite

I am using Raspbian Stretch Lite 2018-04-18. I currently have static IP working over wifi. I setup /etc/wpa_supplicant/wpa_supplicant.conf to connect to my wifi and setup /etc/dhcpcd.conf to use a static ip: interface wlan0 static…
Andrew Ringler
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Playmouth ignores the current theme

On startup Plymouth 0.9.2, on Raspbian Stretch, always shows the "text" theme (three square dots) regardless the current theme settings. In fact I have: $ plymouth-set-default-theme mark1 $ cat /etc/plymouth/plymouthd.conf # Administrator…
Mark
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How do I set the Dvorak keyboard layout in cmdline.txt?

How do I set the Dvorak keyboard layout in cmdline.txt? What would I put for the kbd=us flag? Dvorak is a variant of the US layout.
Geremia
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RPi3 is not booting after editing /boot/cmdline.txt -- also unplugged the power after rebooting

Tonight, I was adding a GPS module to my RPi3 by following a tutorial from Adafruit, and now my RPi3 is not booting up. This is the last change I did before doing a reboot via sudo shutdown -r: I changed it to: dwc_otg.lpm_enable=0 console=tty1…
Lyda Tep
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