CentOS - Jan 2021 - rare but repeating system crash in C7

On Jan 2, 2021, at 9:55 AM, Fred <fred.fredex at gmail.com>
wrote:
> 
> Plantronics USB headset/microphone?
> Yottamaster RAID-1 storage (USB3)?
> Behringer USB audio interface?
> Logitech wireless mouse?
> Leopold USB keyboard?
HID devices won?t go to sleep when the computer does, else they couldn?t wake it
back up.  (Keyboard & mouse, mainly.)

The two audio interfaces may or may not sleep.  Try checking their indicator
LEDs when the computer goes to sleep: I?d expect them to visibly show that
they?ve gone to sleep if they do.  If they do, then on wake, they *could* do
this sort of thing.

I?d go after the RAID enclosure first, particularly if it?s hardware RAID, since
that means it?s ?clever,? thus suspect.  Check that you?ve got the current
firmware:

    https://www.yottamaster.com/?route=common/driver

If it?s one of their JBOD models, requiring that you do some sort of software
RAID, I?d expect a much different report in the kernel log if the corresponding
software RAID component had a bug, which would mean it?s got some fundamental
USB compatibility problem if that?s the device causing the problem. Again, check
for firmware updates.

Warren, thanks for the additional info.

I assume that the yottamaster device runs Linux, just like 99% of other
such devices. as to whether it uses linux software raid or some cheap
(megaraid???) chipset, I don't know, nor know how to tell. but I'll
check
that URL you sent and see what happens.

Thanks again!

Fred

On Sat, Jan 2, 2021 at 12:28 PM Warren Young <warren at etr-usa.com>
wrote:
> On Jan 2, 2021, at 9:55 AM, Fred <fred.fredex at gmail.com> wrote:
> >
> > Plantronics USB headset/microphone?
> > Yottamaster RAID-1 storage (USB3)?
> > Behringer USB audio interface?
> > Logitech wireless mouse?
> > Leopold USB keyboard?
>
> HID devices won?t go to sleep when the computer does, else they couldn?t
> wake it back up.  (Keyboard & mouse, mainly.)
>
> The two audio interfaces may or may not sleep.  Try checking their
> indicator LEDs when the computer goes to sleep: I?d expect them to visibly
> show that they?ve gone to sleep if they do.  If they do, then on wake, they
> *could* do this sort of thing.
>
> I?d go after the RAID enclosure first, particularly if it?s hardware RAID,
> since that means it?s ?clever,? thus suspect.  Check that you?ve got the
> current firmware:
>
>     https://www.yottamaster.com/?route=common/driver
>
> If it?s one of their JBOD models, requiring that you do some sort of
> software RAID, I?d expect a much different report in the kernel log if the
> corresponding software RAID component had a bug, which would mean it?s got
> some fundamental USB compatibility problem if that?s the device causing the
> problem. Again, check for firmware updates.
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