All Questions
Tagged with framebuffer display
7
questions
0
votes
1
answer
302
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 ...
10
votes
2
answers
1k
views
How can I get the number bytes to write per row for FrameBuffer?
Goal: I'm writing a very simple image viewer for framebuffer /dev/fb0 (something like fbi).
Current state:
My software takes the pixel resolution from /sys/class/graphics/fb0/virtual_size (such as ...
- 552
8
votes
0
answers
2k
views
hwinfo --framebuffer shows nothing, can't change grub resolution
I am using a Lenovo Yoga C940 15" with Fedora 34. It has a 4K screen with an nvidia gtx1650 mobile card and integrated intel graphics. I wanted to change the resolution of the GRUB menu because ...
- 233
1
vote
0
answers
107
views
Display blacking out on boot (Macbook Linux)
(Please note that I am breaking this out as a separate question from this one I asked earlier: How exactly do the Linux display device files work?)
I have a Linux From Scratch system that I've built (...
- 2,405
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
0
answers
73
views
The window would like the X- represents at the same time in two frame buffers
I'm using the two frame buffer.
/dev/fb0: 1024x768 (LCD)
/dev/fb1: 1920x1080 (HDMI)
I want to be the same content simultaneously on two frame buffer output.
Is there any way ?
- 569