Linked Questions

50
votes
2answers
12k views

How does Linux's display work?

The Linux's display system uses multiple technology, protocols, extensions, applications, servers (daemon), drivers and concepts to achieve the windowing system for instance: Xorg, Wayland, X11, ...
6
votes
2answers
8k views

What is the difference between getty and agetty?

When I looked in the manual for agetty all I saw was alternative getty
6
votes
1answer
7k 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 ...
2
votes
1answer
3k 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 ...
3
votes
2answers
242 views

Is a virtual console running as a process and implemented based on pseudoterminal?

Linux has 7 virtual consoles, which correspond to 7 device files /dev/tty[n]. Is a virtual console running as a process, just like a terminal emulator? (I am not sure. It seems a virtual console is ...
0
votes
1answer
545 views

Why is the X server process not a daemon?

root 717 2.0 3.2 1038344 263604 tty7 Rsl+ /usr/lib/xorg/Xorg -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch Is it correct that the X server process is running ...
1
vote
2answers
530 views

What controls the mapping between Ctrl+Alt+F keys, TTYs and X sessions?

On my CentOS system, Ctrl+Alt+F1 shows the X Windows session known as :0, but on other systems Ctrl+Alt+F7 may do the same thing. What determines how Fn keys are mapped to X sessions and TTYs? ...
2
votes
2answers
121 views

Why are there TTYs only on one GPU?

I recently installed Centos 7 on a Dell PowerEdge R740 with a Nvidia GPU added to it. After installation I was surprised to see that the iDRAC remote console capabilities was not working. Not even ...
1
vote
1answer
191 views

Linux console: All keyboard input is preceded by “^[”

After coming back from laptop hibernation, my Fedora 27 has gone into a weird state whereby: On the graphical console, no input is accepted, even mouse activity is disregarded On the text console, ...
1
vote
2answers
50 views

What application manages the consoles

With Alt + Fn you can switch between virtual consoles in most Linux distributions. What application handles the switching of consoles and how? I suppose it has to read the keyboard input before all ...
2
votes
1answer
67 views

Any character I type on the non-GUI console gets prepended ^[

I just find this behavior interesting (I can fix it by rebooting). What can cause it and is there any way to switch it off within the session? Or am I free to conclude it's only a bug? This may help: ...