Opened bug https://bugzilla.kernel.org/show_bug.cgi?id=213771 in
bugzilla.kernel.org to track the issue.
Thank you.
** Bug watch added: Linux Kernel Bug Tracker #213771
https://bugzilla.kernel.org/show_bug.cgi?id=213771
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Hello Luzemário
Thanks for the test and quick response.
Since we don't have this device, we will need your help to report this
issue to the upstream: https://bugzilla.kernel.org/
Once the fix has landed we can backport it to Ubuntu kernel.
Thank you.
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This issue appears to be in the kernel driver itself. I guess it is some
type of regression.
There was no difference using the mainline kernel or the default kernel
inside another host with Alpine Linux distro (Linux alpine 5.10.16-0-lts
#1-Alpine SMP Wed, 17 Feb 2021 08:17:06 UTC i586 Linux).
In response to #4:
Attached apport logs. Please wait while I make a test with mainline
kernel. Thanks for the clue.
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https://bugs.launchpad.net/bugs/1919051
Title:
ch341 USB-Serial
apport information
** Tags added: apport-collected
** Description changed:
This device works flawlessly on Windows XP with native driver, both as a
physical machine or inside a VM. It appears on XP's device management as
"USB 2.0" name.
On Ubuntu, Shorting pins 2 and 3 of DB9
Hi,
as the ch431 driver in Ubuntu Focal is a bit different from the latest mainline
kernel from upstream, can you give the latest mainline kernel a try to see if
this can solve your problem?
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.12-rc3/
https://wiki.ubuntu.com/Kernel/MainlineBuilds
linux-modules-5.4.0-66-generic
** Package changed: ubuntu => linux (Ubuntu)
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https://bugs.launchpad.net/bugs/1919051
Title:
ch341 USB-Serial converter only receives, does not send
To
Thank you for taking the time to report this bug and helping to make
Ubuntu better. It seems that your bug report is not filed about a
specific source package though, rather it is just filed against Ubuntu
in general. It is important that bug reports be filed about source
packages so that people
