Questions tagged [framebuffer]
related to Linux `fbdev` abstraction (a.k.a. Linux framebuffer), as well as to accessing the framebuffer (a part of video memory) in general
152 questions
0 votes
1 answer
265 views
Writing to the framebuffer while X or Wayland is running?
This is a pretty straightforward question. I am writing a Qt program that looks to render graphics in the terminal. To do that, I utilize Sixel Graphics which has a large overhead. I would rather ...
- 215
2 votes
2 answers
232 views
How can I get Linux console output on both iGPU (HDMI) and IPMI (AST) simultaneously?
I'm trying to get console output on both the onboard iGPU (Intel i915, HDMI output) and the AST BMC (IPMI remote display) on my headless server setup. Hardware and OS Motherboard: ASUS Pro WS W680-...
1 vote
0 answers
139 views
Frame Buffer as RTSP stream
I have a RTSP viewer on a small local network that I would like to use as a monitor. I'ts really just to access the CLI in the event that an automated service on a Rspberry pi doesn't start or run ...
- 173
0 votes
1 answer
2k views
Low resolution in the EFI/VGA early boot framebuffer/console (and in GRUB)
When I boot my Linux machine with UEFI and grub2, I get only few graphic modes (resolution modes) available. And both of them are really smaller than my monitor/screen. For example, the boot console ...
- 149
5 votes
0 answers
774 views
How do I change the framebuffer resolution at runtime without legacy /dev/fb0?
I have a server in production which was booted with a 1080p widescreen monitor attached and it used that when it automatically selected that resolution for the console on boot. Currently, it is ...
- 12.4k
1 vote
0 answers
117 views
Color range for tty
THIS IS NOT A PROBLEM ABOUT XORG I have a singleboard PC with Intel N100 with 2 HDMI ports. When arch boots, the color range changes to limited after i915 takeing over the display from UEFI ...
- 11
0 votes
1 answer
962 views
Xorg FBDEV refuses to use the specified framebuffer
I'm using Xorg with the FBDEV driver, configuration: Section "Device" Identifier "Device0" Driver "fbdev" Option "fbdev" "/dev/fb0" ...
- 149
1 vote
0 answers
298 views
Boot linux in text mode and without framebuffer?
This used to be the default some years ago: Linux would boot up on a text console, 80x25 characters. I want to get back to that - this is for a number of servers that boot over the net (with PXE) - ...
- 779
0 votes
0 answers
136 views
Booting with an NVIDIA GPU, but without nouveau
I am trying to boot a Linux system (Debian 11) with an NVIDIA GPU; I need to avoid loading the nouveau driver, which I can do if I include some options on the linux command line (in grub.cfg): ...
- 779
3 votes
0 answers
621 views
How does this whole FrameBuffer, DRM, KMS stuff work in todays Linux / Kernel?
I'm confused about what is what nowadays with Linux and video support for the console interface vs X. Do the /dev/fb* items only relate to the old original framebuffer support? Does DRM create/support ...
- 293
1 vote
2 answers
2k views
Display images using fbi on startup using systemd
I can successfully display images using the following command: sudo fbi -T 1 /home/pi/photo-screen/photos/*.jpg -t 4 I now want to start a slide show of those pictures as soon as the Raspberry PI ...
- 123
2 votes
0 answers
445 views
Cannot write to /dev/fb0 in systemd-nspawn container
I've created a systemd-nspawn container in which /dev/fb1 from the host is bound as /dev/fb0. I've set PrivateUsers=off in the .nspawn config file, and the file ownership and permissions of /dev/fb0 ...
- 41
1 vote
0 answers
579 views
What is the definitive (and simplest) way to use fbi on Raspberry OS Buster to display images automatically on startup?
I have made all sorts of modifications to my ACLs and even created a photos.service that starts fbi, but it only starts, and displays 1 image before the screen goes blank. I have other processes (web ...
- 141
1 vote
1 answer
1k views
Which service creates /dev/fb0 node?
I want to update the console-setup.service to detect screen resolution using fbset -s and adjust console font size accordingly. For fbset, I need /dev/fb0 to be present, but I don't know which service ...
- 123
0 votes
1 answer
692 views
Buildroot and framebuffer
I am very new to embedded programming so please have some understanding if i sound dumb. Recently i have built a linux kernel using buildroot tool. These are the commands i used: make ...
