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Date:   Mon, 11 Oct 2021 10:51:52 +0200
From:   Johan Hovold <johan@kernel.org>
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Subject: Re: [Bug 213771] ch341 USB-Serial converter receives but does not
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On Sat, Oct 09, 2021 at 08:07:00PM +0000, bugzilla-daemon@bugzilla.kernel.org wrote:

> --- Comment #5 from Denis Bondar (bondar.den@gmail.com) ---
> Hi,
> This version probably has the same or similar problem:
> 
> Linux home 5.11.0-37-generic #41~20.04.2-Ubuntu

That's also not a mainline kernel. Unless you can reproduce this with a
mainline (or stable) kernel, you need to report this to Ubuntu.

Providing answers to the questions I asked the original reporter might
help too.

Johan