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This file is parsed by the GPU before the initialisation of the ARM core. It can be used to set various parameters to alter the behaviour of the system, such as display resolution or overclocking settings.

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3answers
2k views

Raspberry Pi 3 HDMI Not working

I have raspberry pi 3 model b and windows 10 PC. I downloaded Raspbian instead of NOOBS in order to be able to modify the config.txt file. But I'm still having the same problem, that my display doesn'...
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votes
1answer
304 views

Does display_rotate still work?

I'm trying to use this runtime config.txt parameter under Raspbian Stretch and an external LED monitor on the HDMI port to no effect. It's hard to tell from posts here and elsewhere if this setting ...
0
votes
1answer
20 views

Fallback kernel.img possible in config.txt

I have a raspberry with a customized OS. The image it should load is described in the config.txt on the boot partition. The image is called zImage and the line in the config.txt is: kernel=zImage I ...
0
votes
1answer
576 views

Trying to autorun Paho MQTT client script on boot up

I am running a Paho MQTT client on my raspberry pi (Stretch OS). This script recieves MQTT messages from a publisher script and then stores the data in a SQL database. As I added client.loop_forever() ...
0
votes
1answer
64 views

Killing Power at GDM3 Login

I understand that killing power to a running pi without first shutting down can damage the SD card. Can Killing power at the GDM3 login screen also damage my SD card or do I need to run the GDM3 ...
1
vote
0answers
11 views

Setting official touchscreen display boot-time brightness

I've got an official display, and having found other questions about setting the brightness I know I can change the brightness, and make a script that will run on boot, but that means the screen will ...
1
vote
0answers
16 views

Read pin (power led) from port expander on ic2-0 at config.txt

In config.txt you can have conditional booting based on the GPIO pin level, e.g. the gpio4=1 line. Is it also possible to access the pin on the GPIO port extender at i2c-0, or is this something ...
1
vote
0answers
143 views

Red camera LED fails to turn off

I am using Raspbian 4.9.35-v7+ (3B+) and the camera: https://www.adafruit.com/product/1567. This may be flagged as a duplicate to previous questions under similar titles; however, none of their ...
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vote
0answers
95 views

config.txt has no effect on the bash screen with archlinux arm

I have: rpi3 v2.0 http://os.archlinuxarm.org/os/ArchLinuxARM-rpi-3-latest.tar.gz the boot is on a FAT32 2gb sd card and the root is on a EXT4 8gb USB flash drive crt tv connected with an rca cable ...
1
vote
0answers
1k views

No display with “dtparam=audio=on”

This is my /boot/config.txt: http://termbin.com/0pq4 (1600x900 screen with HDMI to VGA adapter, turned vertical): # For more options and information see # http://rpf.io/configtxtreadme # Some ...
1
vote
0answers
567 views

How to change screen resolution for 2.4" monitor via config.txt?

I have tried changing the screen resolution of my 2.4" monitor to 320x240, but no luck. Here is my config.txt http://pastebin.com/UdpHKLfP I have no success changing the screen resolution. My ...
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vote
0answers
703 views

What h264_freq do I need to to improve video latency for h.264 on rpi 2 B?

I'm looking at the following links to help modify my config.txt file: https://www.raspberrypi.org/documentation/configuration/config-txt.md http://elinux.org/RPiconfig In there I see that the GPU ...
1
vote
0answers
2k views

Custom HDMI mode Raspberry Pi 2

I'm new to the Raspberry community and I'm trying to get the Raspberry to display on my iMac through Target Display Mode (TDM). This works fine, but only up to 720p, since the iMac can only work in ...
1
vote
0answers
2k views

Retropie Retroarch Emulator PSX and N64 too small resolution

I'm new to the Raspberry Pi and just got a RP2, with a retropie image. I installed an N64 and PSX rom to test it out and they work perfectly BUT for the size on my 40" 1080p TV. This is what I get: ...
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vote
0answers
2k views

Boot config.txt is ignored

Problem The /boot/config.txt file is being ignored when the Raspberry Pi boots up. As such, overscan and overclocking settings are not taking effect. What I've tried Some reported that the line ...
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votes
0answers
52 views

How to fix adafruit 7" display resolution problem on PI3?

I recently bought adafruit 7" display to be used with my PI3 to see if it will work. Well, it sort of works. The screen comes up everything is displayed but the resolution is screwed up. I have tried ...
0
votes
0answers
70 views

problem with video HDMI video output, distorted image

I am playing with a Rpi3 distro (Android Raspand) and I can't see anything. Image is twisted and distorted, please see how I am playing with config.txt following this guide https://raspberrypi....
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votes
0answers
91 views

Error on init/boot '/init: line 27: can't create /sys/class/leds/led0/trigger'

Sorry for asking the same question twice, but it seems i can't fix the problem yet. I have a web server running on my pi. One day i found that my server is down and i try to access my pi using VNC and ...
0
votes
0answers
34 views

White screen on 7,5" touchscreen display on RPi2 with Ubuntu Mate

I have an RPi 2 and a 7,5" touchscreen display. When they are connected, my display shows only white pixels in a weird way (fading in and out). The display works if connected to another computer with ...
0
votes
0answers
265 views

RPi3 on Sony Bravia HDMI Produces Flickering Lines

After working for a while, and with various distributions and SDs, my Raspberry Pi 3 no longer properly works with my Sony Bravia. With the HDMI inserted it now displays flickering, changing lines. It ...
0
votes
0answers
105 views

My Monitor wont turn on when connecting to Rassberry Pi 3 Model B?

I have a AOC 1619Sw Monitor and a Sony Bravia BX400. I will first explain with my monitor. I am using a Sandisk 8 GB class 4 SDHC card having raspbian in it. I got the power supply of a Lenovo charger ...
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0answers
92 views

For a minimal SD to enable USB Host boot, are bootcode.bin and config.txt sufficient?

For network booting, the according Foundation tutorial describes how one modifies the boot/config.txt on a "standard" SD installation to program the OTP memory in order to enable USB Host boot (by ...
0
votes
0answers
658 views

Signal from Pi not recognized by DP monitor

I'm trying to switch Raspberry Pi to a new monitor, but monitor complains about not getting HDMI signal. The old monitor was attached via HDMI-DVI cable, while new monitor has HDMI-HDMI cable and then ...
0
votes
0answers
218 views

RCA output of Pi in black and white

I got a Pi recently, and when trying to use the RCA socket, only got a black and white picture on the TV, it's also blurred. I changed my config.txt to have sdtv_mode set to 2 (PAL, I'm in the UK), ...