ODROID XU4 kernel 4.9.51-1 removes /dev/fb0

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ODROID XU4 kernel 4.9.51-1 removes /dev/fb0

Postby aroberts » Mon Sep 25, 2017 4:05 am

The latest kernels for the ODROID XU3 removes the /dev/fb0 device needed for console hardware opengl.
/dev/mali0 is still there but you need /dev/fb0 to query screen sizes etc

Is it me or has pretty much every update since July bricked some feature or other on RPI and ODROID?
aroberts
 
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Re: ODROID XU4 kernel 4.9.51-1 removes /dev/fb0

Postby aroberts » Mon Oct 16, 2017 4:22 am

This came back in the next kernel update, but now seems to have vanished again with the latest kernel:
4.9.56-1-ARCH

So once again hardware opengl without X11 is broken.
aroberts
 
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Re: ODROID XU4 kernel 4.9.51-1 removes /dev/fb0

Postby aroberts » Mon Oct 16, 2017 4:53 am

Ok I've figured out what is happening here.
On ODROID XU4 you only get /dev/fb0 if the HDMI is connected and the monitor is on.
This is different from the Raspberry pi's, and ODROID-C2 where you get /dev/fb0 regardless.

There are plenty of use cases for having /dev/fb0 without a physical display being attached.
aroberts
 
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