*Solved* Appliction to switch between running X Servers

ying · 2011-08-28 20:32:20

Hi all
I am looking for a command application, which allows me to switch between running X Servers. Similar to ctrl+alt+Fx. I do need this, because I need the source how this is done.

THX

Last edited by ying (2011-08-30 20:36:31)

cra · 2011-08-30 12:17:19

There is a virtual keyboard application called xdotool
For example,

xdotool key ctrl+alt+F1

Shark · 2011-08-30 12:20:40

You can use "chvt" commnd. For example, command:

chvt 4

will switch to console 4

karol · 2011-08-30 13:42:12

Shark wrote:

You can use "chvt" commnd. For example, command:
chvt 4
will switch to console 4

Not exactly, I get

[karol@black ~]$ chvt 4
chvt: VT_ACTIVATE: Operation not permitted

when running inside X. OP wants to switch between running X servers, not VTs.

Shark · 2011-08-30 14:12:36

karol wrote:

Shark wrote:
You can use "chvt" commnd. For example, command:
chvt 4
will switch to console 4
Not exactly, I get
[karol@black ~]$ chvt 4
chvt: VT_ACTIVATE: Operation not permitted
when running inside X. OP wants to switch between running X servers, not VTs.

If you are inside X, then you have to do:

sudo chvt 4

Running X servers can be switched via chvt. For me to change from display 0 to display 1 i just do "chvt 8" as root.

Last edited by Shark (2011-08-30 14:14:54)

karol · 2011-08-30 14:40:03

Shark wrote:

If you are inside X, then you have to do:
sudo chvt 4
Running X servers can be switched via chvt. For me to change from display 0 to display 1 i just do "chvt 8" as root.

D'oh. Thanks for this explanation.

lolilolicon · 2011-08-30 14:44:39

In X, when you press Ctrl+Alt+F1...F12, you are switching VTs. In the xorg-server source xorg-server-1.11.0/hw/xfree86/common/xf86Events.c, you can see the function called for switching VT is xf86VTActivate(), which is defined in the files xorg-server-1.11.0/hw/xfree86/os-support/*/*VTsw*. The actual code is something like:

ioctl(xf86Info.consoleFd, VT_ACTIVATE, vtno)

Compare this to the chvt code:

ioctl(fd,VT_ACTIVATE,num)

You see how it's done

ying · 2011-08-30 20:36:21

Hey thanks to all of you!

@lolilolicon: Perfect!

*Solved*

Edit: Is there also a way, to read out all running X servers and get the display and vt of it?

Last edited by ying (2011-08-30 20:37:28)

Arch Linux

#1 2011-08-28 20:32:20