Laptops have shitty webcams, what sometimes helps is putting a white piece of paper behind the qr code device you are trying to scan. I assume you have already tried playing with the density/brightness?
Yup, played with brightness but Linux laptops must have even shittier web cams. 😂
That paper trick worked though! 🙏
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Paper trick works 95% of the time for me
60% if the time, it works every time