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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17 views

How to install drivers for integrated intel graphics?

I am building a minimal Debian system. I installed Debian Wheezy with the netinstall iso, and selected to install only basic system utilities, no desktop environment. The computer that is running this ...
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1answer
33 views

How to paint on linux graphical console?

I need to display QR codes on graphical console on Linux. I am using qemu. Can you give me a sample code of painting something on graphical console or a hint how to do that?
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51 views

mplayer failed to play video on framebuffer device

I tried to play a video on Linux framebuffer device with mplayer like this mplayer -vo fbdev video.mp4 but it failed, mplayer saying Error opening/initializing the selected video_out (-vo) device. ...
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2answers
63 views

dual monitor with uvesafb / Intel 945GME?

I'm using uvesafb to get a simple framebuffer on a Intel 945GME embedded graphics controller. That works fine. The PC has a single combined DVI+VGA output connector and both outputs currently show ...
2
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0answers
179 views

Setting the EFI Framebuffer's Resolution during boot

I've got a MSI WD-60 laptop running Gentoo. It has one of those 3840x2160 screens so I've had to setup Gnome/Firefox/IntellJ to double their DPI for anything to be readable. It all works fine except ...
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0answers
56 views

Specify Virtual Size using DRM with Frambuffer Emulation

I am attempting make use of double buffering on an AM335x processor. We have an example running on a demo image that was not created by us. I am working on putting together our own image using ...
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1answer
254 views

Which systemd service starts text console on the framebuffer device?

I'm working with an embedded platform and need to have /dev/fb0 clear for my own use (the device accessible over serial console while the screen is used to display information, without X.). I've ...
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0answers
41 views

Does all applications which show graphics without an X server has to use the frame buffer device on linux?

I am using limelight embedded on my raspberry pi 2. The application streams games from your Windows PC. It is not an X application because no X server is running. So does this application has to ...
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0answers
96 views

Tegra Mesa GLES without X

I am trying to setup a Tegra 3 (Toradex Apalis T30) based system that will have an OpenGL ES based user interface on a touch screen. Unfortunately the standard Linux4Tegra kernel is seriously outdated ...
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0answers
101 views

Why reading from and writing to framebuffer shows no effect ?

I read a very short description of how to make a Screenshot by making use of the file which represents the framebuffer /dev/fb0. in order to write the screen content: cat /dev/fb0 > file in ...
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1answer
177 views

Is it possible to access to the framebuffer in order to put a pixel on the screen from the command line?

I am not sure if it is the only possible way, but I read that in order to put a single pixel onto the screen at a location of your choice one has to write something into a place called framebuffer. So ...
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1answer
63 views

What is the kernel frame buffer?

I was reading the "mplayer" man pages trying to play video using just the console, (I don't have or don't want to install X11). It mentions that I can use the kernel frame buffer device which is ...
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0answers
52 views

How do I set a framebuffer node to direct the graphics rendering to it?

I have currently two framebuffer nodes /dev/fb0 and /dev/fb1./dev/fb1 in my case is used for overlay. I want to have graphical rendering on this /dev/fb1. How can I select this device node for the ...
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0answers
402 views

How to rotate the LCD screen/framebuffer to 180 degree?

I have a custom board with a Freecale i.MX6Q SoC. I am using Linux kernel 3.03.35 and LCD is 3.5 inch RGB type display. I want to rotate my LCD screen to 180 degree. I tried a lot to pass parameters ...
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0answers
250 views

DirectFB does not write to /dev/fb0, embedded device

I am developing a Linux based port for a custom board based off the Atmel at91sam9261-ek demo board. Processor core is arm926ej-s LCD (board customization) is VGA, 640x480, 24 bit packed true color. ...
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1answer
218 views

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. ...
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1answer
42 views

Make own graphical server [closed]

I had experience to work with framebuffer and found it pretty well to make own graphical applications. But the problem is that framebuffer is too slow. My goal: 1) Make a new tty which will work for ...
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1answer
199 views

Best practice for hiding virtual console while rendering video to framebuffer

I'm currently rendering video in Linux directly to the framebuffer using GStreamer. I was wondering how I would go about hiding the virtual console while rendering. I can stop the cursor from ...
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2answers
64 views

Use/Grab the only keyboard with no user logged locally

I have a raspberry pi running some software (I have the source) that needs user interaction and has a special (USB) keyboard with only 3 keys. The program runs on framebuffer (SDL) and is launched ...
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0answers
91 views

Black console mouse cursor on NetBSD 6.1.5

I am using NetBSD 6.1.5 with VMWare workstation 10. I am booting from this entry in boot.cfg: menu=Boot NetBSD:vesa 1280x800;boot netbsd When using wsmoused in console mode, the cursor on the ...
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0answers
120 views

Setting the video output for the framebuffer device

I'm working with Broadcom's 97356 device, which contains an HDMI and an analog video output device. I'd like to be able to draw stuff to one of those two devices (or both at the same time!) using a ...
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0answers
448 views

How to create the framebuffer file node?

I'm working with a limited embedded device - Linux environment - that uses a custom DirectFB implementation to draw a user interface in its video output. I would like to exchange this method by a raw ...
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1answer
212 views

tslib tools don't draw anything on the screen

Trying to calibrate touchscreen for Qt apps with tslib on ARM-device. When running ts_calibrate or ts_test, they both work (i.e. return info about touches) and ts_calibrate successfully calibrates ...
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0answers
302 views

Setting fbcon to use a specfic frame buffer device

I am trying to display the output from and SDL based application on to a framebuffer device /dev/fb1. Fb1 is associated with a SM750 based card. When I run my application, the output always appears ...
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0answers
164 views

redirecting output of /dev/fb0 to /dev/fb2

I am using IMX6 Saberauto board on Linux OS. I have 2 displays primary is HDMI and secondary is LVDS. I want to run 2 applications. One QT on primary display, which I am able to do. Second ...
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0answers
312 views

add monitor to linux tty framebuffer

Whenever I use my laptop at my desk, I usually connect it to an external display on DP-1. To switch the window manager output to this display, I can just use xrandr --output DP-1 ... However, ...
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1answer
296 views

How can I move framebuffer or X screen relative position?

A long time ago in a galaxy far, far away I had fixed boot screen using this nice solution. Since that time I have been looking for the way to move framebuffer in virtual console slightly to the right ...
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1answer
194 views

Can I enable framebuffer support in xterm [closed]

Can I enable framebuffer support in xterm? If yes, how can I do it? If no, what terminal emulator have a framebuffer support?
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0answers
2k views

How can I enable framebuffer in Debian

How can I enable framebuffer in Debian console? This is what I've already tried: Add the following lines to the "/etc/default/grub" file: GRUB_GFXMODE=1024x768 GRUB_GFXPAYLOAD_LINUX=1024x768 ...
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0answers
64 views

re-initialize the framebuffer when program crashes

I'm using SDL to display images on a monitor, without X installed. When my program ends successfully, the monitor goes back to the login prompt (as expected). But when my program crashes, the last ...
2
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1answer
2k views

How can I add an additional framebuffer device in Linux?

I'm running a Ubuntu 12.04 LTS as a home NAS server, without X. Recently I got into tuning it to serve as a video playing media device too. It might've been easier at this point to install X, but I ...
5
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1answer
99 views

Where would I start looking for documentation on the graphical mode of the Linux console?

I'm writing my own display server as an educational exercise. Where in the Linux kernel tree would I look for documentation on the console's graphical mode? Basically, as I understand it, Xorg takes ...
2
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1answer
920 views

What is the easiest way to draw graphics on Linux framebuffer?

I have some embedded Linux ARM chip with LCD display on frame-buffer. I connect to chip with serial console. I can access frame-buffer directly with low-level commands. However I need to draw some ...
3
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1answer
729 views

What happened to `vga=ask` in newer kernels?

I used to activate framebuffer mode in the "older" kernels with vga=ask, and later setting it to a value, once I've figured out which one works best for me. Now, this option seems to be gone, the ...
4
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1answer
468 views

How to enable VESA framebuffer as default in NetBSD 6.1

When booting NetBSD, the old Tecra 720CDT that I have, works quite nicely in 1024x768x15 mode with vesa fb. I always have to activate VESA when booting the system: > vesa on > vesa 0x116 > ...
3
votes
1answer
4k views

open /dev/fb0: No such device

I installed fbi framebuffer to view images on TTY terminals (outside X). When I do: fbi image.jpg it outputs the following error: open /dev/fb0 no such device Yet when I run ls /dev/fb*, I ...
4
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1answer
3k views

Rotate console on startup (Debian)

I want to rotate my console (not X Server) by 90 degrees (clockwise). The following seems to work for me: echo 1 > /sys/class/graphics/fbcon/rotate; however, I'd prefer to use a kernel option in ...
2
votes
1answer
778 views

How do I start a gui framebuffer (no X) application on startup instead of console login prompt?

I have a python application that uses pygame to access the framebuffer directly without using X. I want to start this application on startup instead of showing the console login prompt. I haven't ...
2
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1answer
1k views

Writes to FrameBuffer /dev/fb0 do not seem to change graphics screen

In attempting to write directly to the graphics frame buffer /dev/fb0 , (Ubuntu 12.04) , the graphics screen does not change. Has Ubuntu 12.04 invalidated the use of /dev/fb0 , or does it need to be ...
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0answers
282 views

Problems when using the framebuffer device directly

I am writing a program using the framebuffer device directly and I have three problems there. 1) The only way I can set the screen resolution correct is by passing the kernel option during boot: ...
2
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0answers
467 views

How to redirect and use the framebuffer?

I need to work on the framebuffer to record what is being rendered. Now, I figure out how to convert the framebuffer in an image, I'm currently unable to obtain a constant stream of data from the fb ...
5
votes
1answer
243 views

Specify Monitor For Linux Console

Does the kernel, framebuffer, or a framebuffer driver (uvesafb) have an option to specify the video-card output to use? The kernel only outputs to one monitor: Kernel message buffer (before and ...
4
votes
0answers
410 views

Setting Framebuffer splash resolution when exiting X

I installed a copy of BackTrack 5 R2 (Ubuntu 10.04) to my HDD and dual-booted with Windows 7. After a bit of tweaking I set about updating the native Intel drivers because it was only allowing me to ...
4
votes
1answer
840 views

Pivot in text mode (no X) (Pivot = rotated 90 degrees)

How to get rotated video in text mode (no X), even during booting sequence ? OS: Linux Graphics card: mostly ATI, but curious about NVida and Intel solutions.
2
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0answers
574 views

modetest.c from libdrm tests lists no framebuffers

I wanted to play with KMS since it seems to be the preferred low-level graphics library on Linux. However, after compiling the appropriate modetest.c version (2.4.32, since that's the version of ...
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2answers
852 views

How to increase the speed of a text console (kernel mode setting)?

On a Fedora 17 system (i915 hardware) KMS works out of the box - and using the console (i.e. Ctrl+Alt+F2 etc.) is very framebuffer-like. To the point that scrolling through a man page or cat log-files ...
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1answer
1k views

What is a framebuffer device and is it required to obtain a higher resolution?

I am running a gentoo guest OS on qemu-kvm. I can only get resolution of 800x600 in it. I want to be able to get a higher screen resolution. xrandr gives the following output : xrandr: Failed too ...
3
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0answers
307 views

When would I use FBDEV vs DRM vs DSS?

I'm new to Linux graphics, and I'm interested in developing a graphics driver. I see that Linux supports three methods for writing graphics to the display device FBDEV DRM DSS2 When would I use ...
13
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4answers
26k views

No framebuffer device: how to enable it?

I'm trying to make a PCMCIA tuner card work in my headless home server, running Debian Squeeze. Now, as I have very big troubles finding the correct command line to capture, transcode end stream the ...
10
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2answers
11k views

Can GRUB font size be customised?

I would like to reduce the size of the font of GRUB boot loader. Is it possible and so how?