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I am running Bullseye on an RPi 3. In attempting to run a GNURadio application I get the subject error.

During my investigation I have found several references to this issue on this and other forums.

One of the discussions led me to an FAQ on github stating the following:

"The chances are this is because ‘something’ (such as gedit) has installed mesa which added its own versions of libEGL and libGLESv2. If you run:

$ sudo find / -name libEGL*
$ sudo find / -name libGLESv2*

on the Raspberry Pi you should just get /opt/vc/lib/libEGL.so and /opt/vc/lib/libGLESv2.so if other ones turn up i.e. /usr/lib/arm-linux-gnueabihf/libEGL.so.1 you could try creating symbolic links for them all like this:

$ sudo ln -fs /opt/vc/lib/libEGL.so /usr/lib/arm-linux-gnueabihf/libEGL.so
$ sudo ln -fs /opt/vc/lib/libEGL.so /usr/lib/arm-linux-gnueabihf/libEGL.so.1
$ sudo ln -fs /opt/vc/lib/libGLESv2.so /usr/lib/arm-linux-gnueabihf/libGLESv2.so
$ sudo ln -fs /opt/vc/lib/libGLESv2.so /usr/lib/arm-linux-gnueabihf/libGLESv2.so.2

The chances are this is because ‘something’ (such as gedit) has installed mesa which added its own versions of libEGL and libGLESv2. If you run:

$ sudo find / -name libEGL*
$ sudo find / -name libGLESv2*
on the Raspberry Pi you should just get /opt/vc/lib/libEGL.so and /opt/vc/lib/libGLESv2.so if other ones turn up i.e. /usr/lib/arm-linux-gnueabihf/libEGL.so.1 you could try creating symbolic links for them all like this:

$ sudo ln -fs /opt/vc/lib/libEGL.so /usr/lib/arm-linux-gnueabihf/libEGL.so
$ sudo ln -fs /opt/vc/lib/libEGL.so /usr/lib/arm-linux-gnueabihf/libEGL.so.1
$ sudo ln -fs /opt/vc/lib/libGLESv2.so /usr/lib/arm-linux-gnueabihf/libGLESv2.so
$ sudo ln -fs /opt/vc/lib/libGLESv2.so /usr/lib/arm-linux-gnueabihf/libGLESv2.so.2"

[END OF GITHUB TEXT]

When I perform the find operation I get the following:
pi@raspberrypi:~ $ sudo find / -name libGLESv2*
find: ‘/run/user/1000/doc’: Permission denied
/usr/lib/chromium-browser/swiftshader/libGLESv2.so
/usr/lib/arm-linux-gnueabihf/libGLESv2.so.2.1.0
/usr/lib/arm-linux-gnueabihf/libGLESv2.so.2
/opt/minecraft-pi/lib/brcm/libGLESv2.so
/opt/minecraft-pi/lib/mesa/libGLESv2.so
pi@raspberrypi:~ $ sudo find / -name libEGL*
find: ‘/run/user/1000/doc’: Permission denied
/usr/lib/chromium-browser/swiftshader/libEGL.so
/usr/lib/arm-linux-gnueabihf/libEGL.so.1
/usr/lib/arm-linux-gnueabihf/libEGL_mesa.so.0
/usr/lib/arm-linux-gnueabihf/libEGL.so.1.1.0
/usr/lib/arm-linux-gnueabihf/libEGL_mesa.so.0.0.0
/opt/minecraft-pi/lib/brcm/libEGL.so
/opt/minecraft-pi/lib/mesa/libEGL.so

As you can see I don't show the /opt/vc that the FAQ says I should see. My question is then what do I use to perform the symbolic link? Do I use minecraft-pi: either brcm or mesa? Do I use chromium-browser?

Please help as I now am completely blocked from using my GNURadio application which BTW worked well on Jessie.

Milliways
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Jim
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1 Answers1

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Sounds like you had not enabled the GL driver and tried to do this manually. I am not sure how your modifications might affect this, but on a clean install, the GPU drivers can easily be enabled using

raspi-config

Then navigate to Advanced Options -> GL Driver -> GL (Full KMS) OpenGL desktop driver with full KMS.

After that reboot and it should work.

If you need/want you can allocate more of the system memory (RAM) to the GPU (VRAM). To do that start raspi-config again. Then navigate to Performance Options -> GPU Memory and specify the amount of GPU allocated memory. Do keep in mind that this will be consumed from the system memory, even when not in use.

sleort
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