Flickering connection to UPS (again, but now I'm sure it is Ok under Windows)

[Lev Serebryakov]

On 06.05.2021 19:16, Hans Petter Selasky wrote:

>> And one more UPS has rock-stable connection and flicker (connect/disconnect loop with period about 3 seconds) on FreeBSD.
>>
>> Yes, I've reported this problem already, but then it was decided, that UPS is defective.
>>
>> Now, I've checked with 3 different USB debugging tools on Windows 10 notebook, that it doesn't disconnect from Windows host.
>>
>> And it flicker on FreeBSD systems.
>>
>> Looks like, we need some quirk for this class of devices.
>>
>> I could collect logs on FreeBSD and Windows, but I don't know what to compare and where to look.
>>
> 
> Is this the same like:
> 
> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=237666
  I have this loop:

...
May  6 19:24:23 gateway kernel: ugen0.2: <PPC Offline UPS> at usbus0
May  6 19:24:37 gateway kernel: ugen0.2: <PPC Offline UPS> at usbus0 (disconnected)
May  6 19:24:41 gateway kernel: ugen0.2: <PPC Offline UPS> at usbus0
May  6 19:24:55 gateway kernel: ugen0.2: <PPC Offline UPS> at usbus0 (disconnected)
May  6 19:24:59 gateway kernel: ugen0.2: <PPC Offline UPS> at usbus0
May  6 19:25:13 gateway kernel: ugen0.2: <PPC Offline UPS> at usbus0 (disconnected)
...


> Could you try to install FreeBSD 11 and see if the issue goes away?

  I could boot from some live media of FreeBSD 11 on same Laptop as I have Windows 10 installed . I'll try it ASAP.

-- 
// Lev Serebryakov