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
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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 ...
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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 ...
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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 ...
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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"
...
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How to return to efifb without reboot (re activate vga console)?
When I boot my Linux machine, I have only efifb framebuffer device available at first:
[ 0.642906] efifb: probing for efifb
[ 0.642954] efifb: No BGRT, not showing boot graphics
[ 0.642957] ...
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Can't clear /dev/fb0
I have one of those 7" HDMI diplays from eBay, driving it with a Q1900 board running Ubuntu 20. I can write to the display using fbi:
sudo fbi -a -T 1 --noverbose -d /dev/fb0 -t 5 --blend 1000 &...
CommunityBot
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Is it possible to get separate framebuffers for displays on Nouveau?
I'm using a simple Nvidia GPU (gt730) to run desktop system on a home server. I'm using nouveau as the GPU driver built-in on the 6.9 latest kernel.
I use FBDEV (on /dev/fb0) to run the X server. /dev/...
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How are framebuffers, graphics cards and window systems connected?
Loose TL;DR: is the framebuffer device still used in Linux today? If so, does (for example) the X window system first write to, say, /dev/fb0, and then to GPU, or does it write to GPU directly, ...
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Linux standalone OpenGL usage
I would like to ask what makes the Linux graphics stack tick and how it all works together.
So far I have understood that it works like this - the Linux kernel exposes GPU drivers through the DRM ...
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cannot run in framebuffer mode. Please specify busIDs
from my previous question empty screen after booting from live persistent usb, I am able after boot to access all files and folders, but the X-server is unable to load (so I get only to tty1). From ...
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change linux text console scrolling speed - without rebooting
Is there any way to change to the text console scrolling speed without rebooting? Currently using Fedora, but non-distribution-specific answers appreciated.
https://www.kernel.org/doc/Documentation/...
CommunityBot
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Debian10: No such file or directory: /dev/dri/card0
I'm installing Debian 10 but I cannot startx nor have a GUI. I think the problem is about some driver.
Here are the errors I've got in /var/log/Xorg.0.log :
[drm] Failed to open DRM device for pci:...
CommunityBot
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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) - ...
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My embedded application doesn't receive keyboard events (Linux framebuffer/Qt+QML application/systemd service/VNC server)
I need to remotely control a Qt / QML application on an embedded ARM instrument. I intended to do that using VNC. This doesn't work. An USB keyboard plugged in the instrument doesn't work either.
NB: ...
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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):
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