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Bug#1107361: linux-image-6.1.0-37-amd64: Owon VDS1022I usb oscilloscope stops working with this kernel version

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Hi Salvatore,

     That is correct. We can close this bug-report. There isn't much 
that can be done at the kernel level which can be used as an OS default. 
Hopefully these bug reports would redirect other users of this device to 
the workaround that they can apply themselves.

     Normally the VID is meant to be unique to a manufacturer (Owon for 
e.g.) and the PID should be unique to a product. In this case Owon was 
using the same PID for multiple products causing compatibility issues.

regards,

Amit

On 07/06/25 12:48, Salvatore Bonaccorso wrote:
> Control: tags -1 + moreinfo
>
> Hi,
>
> On Fri, Jun 06, 2025 at 05:35:26PM +0530, amith wrote:
>> Package: src:linux
>> Version: 6.1.140-1
>> Severity: important
>> Tags: upstream
>> X-Debbugs-Cc: lestoppe@gmail.com
>>
>> Dear Maintainer,
>>
>>          My Owon VDS1022I USB oscilloscope stopped working with it's user
>> software after upgrading the Debian linux kernel from 6.1.0.34-amd64 to
>> 6.1.0.37-amd64.
>>
>>          On debug, it was found that this is because upstream had added the VID
>> and PID for this device to the usb_serial_simple.c device driver. The intent
>> was to support a different Owon device HDS200 which had the same VID and PID.
>>
>>          Currently my USB oscilloscope is unusable unless I force unload or
>> blacklist usb_serial_simple. It would be better if this work around is not
>> needed because new users of this device may not be aware of this and assume by
>> default that the device is unusable on Linux. I only debugged it because it
>> worked without issues in the older kernels.
>>
>>          I have filed the kernel bugzilla report :
>> https://bugzilla.kernel.org/show_bug.cgi?id=220193 and also emailed the
>> maintainers for advice.
>>
>>          There is also a Debian forums posts on this topic :
>> https://forums.debian.net/viewtopic.php?t=162942
> My understanding of Greg's reply in
> https://lore.kernel.org/all/2025060620-twister-starved-3fb8@gregkh/ is
> htat this is not a kernel issue but the devices vendors did not follow
> the rules on assigning the ids?
>
> If this interpretation is correct then I do not see something on our
> end which needs to be changed.
>
> Can you confirm?
>
> Regards,
> Salvatore

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Bug#1107361: linux-image-6.1.0-37-amd64: Owon VDS1022I usb oscilloscope stops working with this kernel version amith <lestoppe@gmail.com> - 2025-06-06 14:10 +0200
  Bug#1107361: linux-image-6.1.0-37-amd64: Owon VDS1022I usb oscilloscope stops working with this kernel version Salvatore Bonaccorso <carnil@debian.org> - 2025-06-07 09:30 +0200
    Bug#1107361: linux-image-6.1.0-37-amd64: Owon VDS1022I usb oscilloscope stops working with this kernel version Amit <lestoppe@gmail.com> - 2025-06-07 10:30 +0200
  Processed: Re: Bug#1107361: linux-image-6.1.0-37-amd64: Owon  VDS1022I usb oscilloscope stops working with this kernel version "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-06-07 09:30 +0200

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