i.MX ProcessorsのトピックDisable display manager on hdmi output

Disable display manager on hdmi output

rans — Thu, 14 Dec 2017 13:16:43 GMT

Hello,

I am trying to disable X11.

I need to use the hdmi output for other purpose.

I first disabled desktop environment with:

systemctl set-default multi-user.target

Then I stopped having the gnome , but I get xterm terminal in hdmi.

trying to kill the process did not help, because it is always creates a new xterm process.

I also changed bootargs and removed the console=115200,ttymxc0 , yet I still get the terminal and I keep getting the process

root@imx6qsabresd:/etc# ps aux | grep xter
root 395 0.0 0.0 2200 1404 ttymxc0 Ss+ 13:41 0:00 /sbin/agetty -8 -L ttymxc0 115200 xterm

Not sure which service is responsible for that.

Is there a way to disable xterm ?

I even created fb distro, but even then xterm is still showing in hdmi output !!! Is there a way to get rid of it ?

Thank you

Ran

Re: Disable display manager on hdmi output

gusarambula — Tue, 19 Dec 2017 15:21:03 GMT

Hello Ran,

The console is being shown on the display as it’s the default output and there is no other information being sent to the HDMI. I would recommend sending either a splash screen or your application to the HDMI framebuffer just to take over the default behavior.

I would recommend that over trying to disable xterm as I haven’t tried it but it is most likely a persistent process so there is always access to the console in case it’s needed.

Regards,

Re: Disable display manager on hdmi output

rans — Tue, 19 Dec 2017 15:47:10 GMT

Hi,

Are they competing with each other ?

I mean is it that xterm always write to framebuffer, while other user of x11 is also writing to framebuffer ? Or is it that there is some priority ?

I see that when I stop the gstreamer pipeline, automatically xterm pop in.

Does it mean that xterm keep writing periofically ?

I also see that when using gstreamer pipeline , if I click the keyboard, then for a split of a second, I see the keys that I clicked on screen.

So, does it mean it keep writing periodically or only when there is event of keyboard ?

Thank you,

Ran