CODEWITHSUNDEEP
javascriptgoogle-chromewebusb
Patrick
Patrick

Reputation: 5

WebUSB Access denied because of cdc_acm

I have accessed a scale with WebUSB and received my demanded output (aka the weight). It perfectly runs on Windows but I want to deploy it on an ASUS ChromeBox. I have set up an udev- rule and unbinded the device from the cdc_acm driver. The problem is that the cdc_acm claims the interface again every time I reconnect the device.

What can/should I do?

Upvotes: 0

Views: 798

Answers (1)

Gerrit
Gerrit

Reputation: 852

WebUSB doesn't currently support detaching kernel drivers on Linux, but it is being considered: https://bugs.chromium.org/p/chromium/issues/detail?id=1099521

You could add cdc_acm to the kernel module blacklist in /etc/modprobe.d/blacklist.conf to prevent it from loading. Alternatively you could consider using the Web Serial API to interact with the CDC ACM driver instead of WebUSB.

Upvotes: 1

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