No screens available - Embedded Linux - Qt Software Stack for Intel NUC

beckseba · 12 Nov 2020, 07:51

Hi all,

I am using the Qt software stack for device creation - in my case for intel NUC. Everything worked fine until I tried to deploy my application on the device. I get the error:

XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
Cannot create window: no windows available

Has anyone an idea?

Thank you.

beckseba · wrote on 8 Jan 2021, 08:14

The solution is setting the environment variable QT_GPA_PLATFORM = linuxfb:fb=/dev/fb0.

jsulm · wrote on 11 Dec 2020, 07:55

@beckseba What graphics stack do you have running on your device? X11? Framebufer? ...?

beckseba · 11 Dec 2020, 08:06

@jsulm I have used the pre-built image provided by Qt, so I cannot say which graphic stack is running. Sorry, I am not very experienced with embedded linux.

jsulm · wrote on 11 Dec 2020, 08:06

@beckseba Qt for device creation is commercial as far as I know, so you can ask Qt Company for support.

beckseba · wrote on 11 Dec 2020, 08:14

@jsulm Thank you, I will ask Qt and let the community know what the solution is.

beckseba · wrote on 8 Jan 2021, 08:14

The solution is setting the environment variable QT_GPA_PLATFORM = linuxfb:fb=/dev/fb0.