I do not understand your comment, perhaps because I do not understand snap.
/etc/udev/rules.d for this device configure it to be 666, and it works fine under other browsers, so you are not talking about actual device access, you are talking about the mapping of this real device onto some virtual "raw-usb" device of the snap's sandbox ? I did what you suggested, tried from the command line before and after launching chromium. I had previously also turned off apparmor for chromium altogether (comment #4). None of these affected the outcome. So, please explain how I "ensure that said interface is connected" for the purposes of the snap sandbox. I can use chromium successfully for accessing the device under RedHat, so this is specifically a Ubuntu/Chromium bug/misfeature. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to chromium-browser in Ubuntu. https://bugs.launchpad.net/bugs/1890365 Title: [snap] Web Serial fails to access local device Status in chromium-browser package in Ubuntu: New Bug description: A javascript-based web page works fine when accessed through Chrome, fails to recognize that any devices exist when accessed from Chromium on the same Unubtu 20.04 platform. The code includes the following snippet: const requestOptions = { filters: [{ usbVendorId: 0x1881 }] }; port = await navigator.serial.requestPort(requestOptions); await port.open({ baudrate: 9600 }); writer = port.writable.getWriter(); reader = port.readable.getReader(); Under Chrome 84.0.4147.105 (Official Build) (64-bit), ttyACM0 device is listed in the pop-up, is selectable, and can communicate. Under Chromium 84.0.4147.105 (Official Build) snap (64-bit), the pop-up contains only "No compatible devices found" message. Experimental Web Features flag is enabled in both browsers. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1890365/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
