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The serial port select popup on linux seem not really useful.

See original GitHub issue

This is how it looks on Ubuntu 22.04.1 (Chrome Version 107.0.5304.121).

Image:

Is this the actual expected behaviour?

The list extends from ttyS0 to ttyS31. This list seem not really useful from a user standpoint.

Update: I was expecting something more readable as shown here: https://developer.chrome.com/articles/serial/#:~:text=User prompt for selecting a BBC micro%3Abit

Issue Analytics

State:
Created 10 months ago
Comments:8

Top GitHub Comments

1reaction

reillyeoncommented, Nov 30, 2022

It would be nice to figure out why some systems are enumerating so many ports. I would be very surprised if your system had so many UARTs. x86 systems typically have 4 and you’ll see a chunk of kernel messages like this on boot as the driver loads:

Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A
00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A
00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A

Do you see similar messages but counting all the way up to ttyS31?

hmm so there we seem to have a feature parity issue.

I wish the OS gave us enough information to do better here. The Web Serial API supports them because some users may have a device connected to one of them, but most of the time with modern devices you are using USB and so the filtering can hide them.

1reaction

reillyeoncommented, Nov 30, 2022

Since this API is not yet stabilised, I thought I could give some feedback.

As a note, this API is stable but feedback is always welcome and can influence future additions to the API.

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