ImportError: libQtGui.so.4 & LibEGL warning: DRI2: failed to authenticate

[angelperezleon]

Hi there,

Get the following errors while attempting following command on Raspberry Pi 3 B+

`sudo python3 main.py

ImportError: libQtGui.so.4: cannot open shared object file: No such file or directory

LibEGL warning: DRI2: failed to authenticate
QStandardPaths: XGD_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
`

[angelperezleon]

https://ibb.co/DrHtd5b here bunch of other error I encountered, hoping you can help on this.
Using a usb logitech c310 HD Webcam 720p

root@rpi2-speech:/# vcgencmd get_camera
root@rpi2-speech:/# supported=1 detected=0

[stepacool]

Hello, glad to see you took interest in my project. I can tell you that your problem is fully related to the way you've installed your OpenCV library. Please install it some other way, or just re-install it if you did it normally.

…

On Sat, Dec 7, 2019 at 10:58 PM angelperezleon ***@***.***> wrote: https://ibb.co/DrHtd5b here bunch of other error I encountered, hoping you can help on this. Using a usb logitech c310 HD Webcam 720p ***@***.***:/# vcgencmd get_camera ***@***.***:/# supported=1 detected=0 — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#11?email_source=notifications&email_token=AEJLLCWY3CIPARIWNT67O7TQXP55DA5CNFSM4JXRJVN2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEGGOG5Q#issuecomment-562881398>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AEJLLCSWCE6Y5FZF73MHCLDQXP55DANCNFSM4JXRJVNQ> .

[angelperezleon]

Thanks for the advise, @stepacool
Finally got OpenCV installed/working on my Raspberry Pi 3 B+ with the Logitech C310 webcam, after several attempts installing it and also setting the crucial symlinks to point to correct LibEGL & LibEGL.v2 libary files, when I have time I will post here which steps/guide and troubleshooting/solution I did to get eye tracking working.

Thanks for making this code publicly available for us all to try and evolve into our own home grown project.

My aim is to use eye tracking for a user to select letters & numbers from a superimpossed stencil on the TV screen for those with difficulty speaking.