Questions tagged [framebuffer]

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Linux Frame buffer boot logo disappeared and terminal is zoomed in

the terminal is really zoomed in on boot and there is no tux in the top left of the screen like in knoppix (i am using gentoo linux which enables this by default) how can i fix this? i am using an AMD ...
ibreakstuff's user avatar
1 vote
1 answer
319 views

Remotely viewing the screen provided by /dev/fb0

I am writing a Forth for RISC V (don't ask!) - and want to add framebuffer access, but I am struggling. The RISC V box is running Linux and is in another room and is not plugged into a monitor and I ...
adrianmcmenamin's user avatar
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316 views

How to run x11vnc with rawframebuffer coming from /dev/fb0 and capturing mouse events from /dev/input/event3?

I have tried running x11vnc reading a raw framebuffer from /dev/fb0 in my linux embedded system. I am using weston fbdev backend so it writes to the framebuffer /dev/fb0. It works, but when I connect ...
Samuel's user avatar
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NVIDIA framebuffer single resolution on linux unable to change

Disclaimer: Any (and likely) all terms I'm using are wrong or inapropriate to the intended function. Under /sys/class/graphics/fb0/modes the only resolution available is U:640x480p-73 I have a dumb ...
Dr. Coomer's user avatar
5 votes
1 answer
946 views

How do I speed up my text console on Ubuntu 18.04?

I just installed 18.04 on a Dell T310 server, and I'm noticing that the text console is unusably slow when scrolling text. To add some numbers to this, invoking dmesg immediately after boot over an ...
Karu's user avatar
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1 answer
170 views

Difference between b"0" and what comes out of /dev/zero

In my research into a way to make my Linux framebuffer go completely black, I stumbled upon the following which I'm looking to get an explanation for: command line: dd if=/dev/zero of=/dev/fb0results ...
Bart Van Loon's user avatar
0 votes
1 answer
2k views

Ubuntu 18.04 with no monitor attached - no framebuffer device

I have an Intel Compute Stick with integrated Intel HD Graphics 515 video running Ubuntu 18.04 server (kernel 4.15.0-29-generic) without X windows. For remote access to this system I use TeamViewer, ...
Oren's user avatar
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1 vote
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How to discover which device is the display frame buffer device of an embedded Linux hardware

I want to install the tslib in an embedded Linux hardware. But I don't know which device is the "frame buffer" needed to set TSLIB_FBDEVICE. /dev folder: /dev $ ls -la drwxr-xr-x 10 root root ...
Matheus Rossi Saciotto's user avatar
0 votes
1 answer
2k views

Gstreamer to save a video in patches

Do anyone know a gstreamer command to save webcam video in patches based on MB size. I need to record a webcam video and save it as a separate file when it reaches 100mb size. Thanks in advance.
Thoht's user avatar
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Need to access tty console while running kiosk mode with fbcon (Raspberry Pi 3B+)

I am Running my application on Raspberry Pi 3B+ in kiosk mode. I successfully put my splash logo while it boots and display the boot messages by adding fbcon=map:2 in the file /boot/cmdline.txt. I ...
Adnanh's user avatar
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1 answer
143 views

Navit in FB causes SDL init -1

I'm trying to compile Navit for Rpi3 with Buildroot image (WPE Framework included). There is only WPE Framework running on startup (no x server) therefore I would like to display Navit using ...
user976928's user avatar
4 votes
0 answers
2k views

How to enable full RGB range on linux framebuffer?

I have an AMD 2400G APU and I have connected a monitor using HDMI. I am using the amdgpu kernel driver to get a framebuffer. When the driver loads, black becomes dark grey on my screen. The reason is ...
Elrond's user avatar
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1 vote
1 answer
3k views

Is there a tool for broadcasting a video from the Linux framebuffer? [closed]

I'd like to show a Linux installation process in real-time, by broadcasting a video (a livestream like the ones you can see on twitch.tv and other similar sites). I know it's possible to take ...
ohmree's user avatar
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3 votes
0 answers
204 views

VLC Wait for Frame

I have a HD video that I would like to play without it being choppy with a grey frame (eg. when it is not being decoded fast enough) I could manually turn the playback speed down until it works, but ...
rFXfAH9aMq's user avatar
4 votes
1 answer
2k views

Framebuffer device /dev/fb0 missing after installing Nvidia graphics drivers

I am running Ubuntu 16.04 LTS on a thin client desktop with NVIDIA ION GPU. Using the commands below, I installed NVIDIA graphic drivers while logged into the TTY1 console. After install, I rebooted. ...
Zythyr's user avatar
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1 answer
391 views

Unable to use make when building fbida (fbi) from source

I am trying to install fbida (Fbi), framebuffer image viewer, on Ubuntu 16.04. I am trying to build from source fbida v2.13 (www.kraxel.org/releases/fbida/) since when I do install using sudo apt-get ...
Zythyr's user avatar
  • 271
2 votes
1 answer
3k views

Overscan under Armbian on a single-board computer (H3-based)

I'm running Armbian on an Allwinner H3-based SBC (NanoPi M1): As you can see, it has a CVBS out, and fair enough, after a bit of tinkering with the bootloader's script.bin (which compiles in and out ...
Camilo Martin's user avatar
2 votes
1 answer
2k views

Missing Modeline when using passive 2-ports VGA switch

I am trying to use a cheap 2-ports VGA Switch (search for: Round Press Button Two Way VGA Switch Splitter Black). It only takes two VGA in and one VGA out (no power input). However when I boot my ...
malat's user avatar
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How do I force MPlayer to leave cruft behind in the framebuffer?

I use Arch Linux, and so far have successfully used mplayer to play video using fbdev2 output. However, mplayer sometimes leaves cruft behind in the framebuffer (by cruft, I mean the last rendered ...
AstroSnail's user avatar
5 votes
1 answer
2k views

SDL without X (dosbox on console of old notebook)

I am trying to run dosbox on low memory (512MB - 32MB video RAM) notebook without x windows for fun. It's not working out of the box and I am getting "can't init SDL no available video device" error. ...
andrej's user avatar
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1 vote
0 answers
377 views

Raspberry Pi overscan not stretching image

I have a composite car monitor like this one, but I can't seem to get overscan right on raspbian. By default overscan leaves borders and seems to display 4:3 stretched to 16:9. To be able to operate ...
Peter Nerlich's user avatar
1 vote
1 answer
2k views

fbterm expected behavior at launch?

I'm working in an embedded linux environment. I have a display setup with the linux framebuffer. I can use the fbgrab to capture the contents of the framebuffer and store it in an image: fbgrab ...
dtmland's user avatar
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3 votes
2 answers
6k views

fbcon - Use Android/MSM framebuffer device for boot console

I am trying to use a rooted Nexus 5 (msm 8974 chipset) device with Debian running with an X server and linux framebuffer boot console. I have recompiled the default Android hammerhead kernel (with ...
Javacow's user avatar
  • 31
1 vote
1 answer
623 views

Does the Windows 98 OS/shell use the CPU to write to the framebuffer/display?

I mean does it use the CPU to access MMIO to put pixels on the display without having other hardware (e.g. GPU, etc.) follow-up after it. When Windows 98 boots, it loads an image by whatever program ...
user avatar
3 votes
2 answers
2k views

How to make the linux framebuffer console narrower?

I've just a installed a Debian Wheezy box (Debian 7.0rc1). By default, the console is displayed using the frame buffer, and due to a certain hardware setup I won't go into, this comes out too wide on ...
einpoklum's user avatar
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0 votes
2 answers
4k views

Image format the same as /dev/fb0

Is there an image format that is the same as /dev/fb0? So that dd if=the_image of=/dev/fb0 would display the image?
BenjiWiebe's user avatar
  • 9,005
21 votes
6 answers
55k views

can I display a JPG or PNG to the framebuffer (/dev/fb*)?

I know I can capture the framebuffer in linux using something like cp /dev/fb0 ~/myimage and re-display that by coping back to the device like so cp ~/myimage /dev/fb0. What format is the framebuffer ...
ndmweb's user avatar
  • 391
3 votes
2 answers
6k views

Linux boot - stop the kernel switching to a new framebuffer mode clearing output

I'm working on an embedded system (based onUbuntu 12.04 LTS) and I'm customizing its kernel. I'm having some problem with upstart, mountall and plymouth. Nothing unsolvable I suppose, but the real ...
Avio's user avatar
  • 917
1 vote
1 answer
892 views

Understanding how LabView buffers work

I am using LabView for an imaging project. In the code I have two separate while loops running (for the most part) independently. The small dependence -if this is a dependence at all- comes from the ...
JamesMarshall's user avatar
2 votes
2 answers
4k views

Disable double buffering entirely or render cursor without double buffering in OS X?

Currently, in OS X, the entire system is drawn using double buffering through Quartz. The purpose of this is, as far as I know, to eliminate screen tearing. The reason I would like double buffering ...
Kale Muscarella's user avatar
1 vote
0 answers
2k views

Screen shows only vertical colored stripes (red, green or blue) on black background

First let me point out that this has never occurred when booting Windows. So I don't think it's damage on the hardware. So, I'm booting my Inspiron 1501 laptop running Debian, and the XDM (X Display ...
Håvard Geithus's user avatar
1 vote
2 answers
975 views

Arch Linux frame buffer changes?

I have an old computer running on P4 processor and ATI Radeon RV100 QY [Radeon 7000/VE] graphics card. Whenever I quit any window manager, the screen goes blank, but it still accepts input i.e. I can ...
Ram's user avatar
  • 181
5 votes
2 answers
1k views

Why can video streaming sites not leverage my 100 MBit LAN-speed?

I am a bit confused about what is slowing down my network and I hope it is correct to ask here and not at "webapps.sx.com", because my issue is not only one with YouTube, but basically many video ...
grunwald2.0's user avatar
1 vote
1 answer
2k views

KVM/QEMU SDL output to framebuffer

I want a KVM guest with SDL graphics on a host that does not run X. From what I've read, SDL supports output to the framebuffer, but I can't find much on the topic.
Mike's user avatar
  • 111
2 votes
0 answers
876 views

How to display a framebuffer and some stdout text

So I have this program that writes to the framebuffer in Ubuntu. It works beautifully: I enter the system terminal using ⇧+CTRL+F1, then start the program, and it starts writing to the framebuffer and ...
bastibe's user avatar
  • 3,872
0 votes
1 answer
1k views

How to improve performance of mplayer with libcaca?

I'm using mplayer and libcaca on Gentoo. My framebuffer (uvesafb) is running at 1920x1200 (I don't know how many characters that is) and mplayer has problems filling up the screen, so video and audio ...
AndrejaKo's user avatar
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1 vote
2 answers
2k views

Use high resolution (same as desktop) in Linux virtual consoles

I want to use 1920x1080 in the virtual consoles, with: Debian Squeeze; proprierary ATI drivers. Switching back to the open source drivers, it works automatically, but I got no clue with these ones. ...
cYrus's user avatar
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1 vote
1 answer
763 views

How do I instruct the kernel to use a USB keyboard and FB device as it's boot console?

I'm guessing the answer to my question is in manipulating the kernel command line. But with what arguments? (and does the kernel have it's own fonts to be used on a FB device?) The host is a ARM9 ...
Jamie's user avatar
  • 211
43 votes
8 answers
85k views

Change Linux console screen blanking behavior

How do I change the screen blanking behavior on Linux virtual terminals? For example, if I switch to a VT from X, login, and leave the system alone for 5 minutes or so, the screen will blank like a ...
quack quixote's user avatar
4 votes
2 answers
18k views

framebuffer not available. How to install the device /dev/fb/0 on Ubuntu?

I am trying to run an application that uses framebuffer on 2.6.31-14-generic #48-Ubuntu. All I need to do is to install a framebuffer device to get rid of the following error: /dev/fb/0: No such ...
Aleyna's user avatar
  • 141
5 votes
1 answer
23k views

Problem setting command-line console resolution. vbeinfo in grub2 does not report all resolutions

I have a Asus EEE PC 1005P which I installed a Command-line system on using the Alternate Installer CD of Ubuntu Lucid Lynx. Altough I think this is a general linux and grub2 question. I do not have (...
Deleted's user avatar
  • 5,078
0 votes
1 answer
2k views

Xvfb with 32 bit color

For some machines this works, for some it doesn't. Xvfb :99 -screen 0 1280x1024x32 However, on most machines this works: Xvfb :99 -screen 0 1280x1024x24 What is the secret ingredient to getting ...
Conley Owens's user avatar
24 votes
3 answers
16k views

Change Linux Console's Default Monitor

Is there any way to specify which monitor the console is displayed on in Linux? Details: I have a 3 monitor setup with 2 video cards. When I boot the computer, the BIOS displays on the PCI graphics ...
Tim's user avatar
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