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
154
questions
2
votes
0
answers
358
views
How exactly do the Linux display device files work? [closed]
I don't really understand how the Linux display device files work and interact together. What files in the /dev tree need to go where and where do they need to connect/point to, in order to show a ...
- 2,405
2
votes
1
answer
2k
views
mapping linux /dev/fb0 to DDR for displaying
I want to write a linux driver which maps my specified memory address space to /dev/fb0.
the driver should be specified by what part of linux? drm or frame buffer or server X or somthing else? Which ...
- 137
1
vote
1
answer
748
views
Two screens/monitors in Linux console (FB not Xorg)
I try to 'mirror' a Linux console (not Xserver) from a Dell laptop to an external monitor connected with HDMI cable. The graphic card is Intel UHD 620. What's the best approach?
Initial net search ...
- 143
0
votes
1
answer
506
views
Kernel Feature needed to change framebuffer colors?
I'm trying to change the colors in the virtual terminal. So far I've tried:
echo -en "\e]PXYYYYYY"-style escapes
writing to /sys/module/vt/parameters/default{red,grn,blu}
the PIO_CMAP ioctl
At this ...
- 147
5
votes
1
answer
3k
views
How to display an X11 screen from a remote machine? (Alternative to ssh -X)
I am locally on a machine without root rights. X forwarding is disabled.
Remotely I am running a process on a machine without a screen, using the Xvfb virtual framebuffer which simulates an X server ...
- 8,924
0
votes
0
answers
254
views
Modify start up routine of LXDE using startx command
I have built lxde and fbtft driver for Raspberry Pi using Yocto. In order to correctly start X11 session and dbus, I need to stop the existing one and execute something like:
FRAMEBUFFER=/dev/fb1 ...
- 301
1
vote
0
answers
460
views
Embedded linux - USB framebuffer device mounting
I have a embedded system which consists of a usb framebuffer display, and a customized embedded linux (3.10.59) box running Busybox (1.21.1).
There is software running a application which utilizes ...
- 155
5
votes
3
answers
14k
views
How to send commands to fbi over SSH?
I'm using fbi to display some images. fbi has some keyboard controls, like +, -, Page Up, Page Down, etc. to control the images.
Instead of using keyboard, I want to send these control commands over ...
- 316
6
votes
0
answers
3k
views
How can I run (start) a framebuffer application via SSH?
I am currently fiddling around with a RaspberryPi and a TFT hat. It is connected to the RPi GPIO pins. The TFT screen itself is working and I see the normal Linux console on it. I fetched a quick ...
- 222
2
votes
1
answer
16k
views
How can I get my framebuffer console working?
I have an Apple MacBook that is running a Linux From Scratch system that I have built. It is a minimal system, just booting into a bash prompt, with no X Window System installed. The graphics chip is ...
- 2,405
1
vote
1
answer
648
views
Do I need a framebuffer driver for a minimal CLI system without X?
I've recently built a Linux From Scratch system on my Apple Macbook laptop; however, I've been struggling to understand the graphics hardware and what kernel driver options I need to enable.
The LFS ...
- 2,405
9
votes
2
answers
7k
views
Is there a way to add margin, border, offset or padding to the Linux frame buffer text console to compensate for HDMI overscan?
I have a newly bought cheap 8 inch TFT LCD display that is "cutting the edges off" on all sides (i.e., not showing all the pixels). I've come to understand that this is due to "overscan" which seems ...
- 211
4
votes
1
answer
3k
views
How do i set framebuffer console font > 32x16?
I need a to set a font larger than 32x16 for my framebuffer console. As far as i know 32 is the maximum you can do.
Is there a workaround? I'm fine with starting an alternate framebuffer terminal (...
- 288
1
vote
1
answer
635
views
Linux framebuffer not reverting to text console when netsurf crashes
On an older computer running Linux (using vesafb, musl libc, busybox), Netsurf will occasionally segfault in low memory situations. When it does so, the last image stays visible on the display, and ...
- 101
3
votes
0
answers
190
views
Detecting intervals of inactivity in the tty? (to simulate setterm --blank in fbterm)
setterm --blank n allows me to configure the virtual terminal to automatically shut the display off after n minutes of inactivity. Unfortunately, I spend all my time in fbterm, where setterm does not ...
- 1,076