[arm-allstar] usb 1-1-port2: over-current change --was: Linux log

Sandy w9sbe at comcast.net
Thu Mar 16 08:30:30 EDT 2023 

David,

Excellent info! I will check the Pi4 and see if it indeed has that 
problem.
Thanks for the research. I'll let u know what was found.

I never had a problem with the Pi 2's or 3's, tho.

73,



Sandy - w9sbe




------ Original Message ------
From: "David McGough via ARM-allstar" <arm-allstar at hamvoip.org>
To: "David McGough via ARM-allstar" <arm-allstar at hamvoip.org>
Cc: "David McGough" <kb4fxc at inttek.net>
Sent: 3/16/2023 4:10:38 AM
Subject: Re: [arm-allstar] usb 1-1-port2: over-current change --was: 
Linux log

>
>Hi Sandy,
>
>More info....
>
>I found some threads describing your exact USB problem.  The suggested
>cause is component failure (polymer electrolytic capacitor directly behind
>the USB3 ports) on the RPi4B board, related to the power limiting for the
>USB ports.  This same type failure mode has also been reported on RPi2 and
>RPi3 boards.  Some have found a solution by simply removing the faulty
>capacitor.  Others say replacing the capacitor fixed the issue.
>
>If the capacitor has failed, it will probably be HOT (short circuited)!
>So, this is a possible test method.
>
>https://forums.raspberrypi.com/viewtopic.php?t=270626
>
>https://forums.raspberrypi.com/viewtopic.php?t=97858
>
>https://forums.raspberrypi.com/viewtopic.php?t=162103
>
>
>
>73, David K4FXC
>
>
>On Tue, 14 Mar 2023, David McGough via ARM-allstar wrote:
>
>>
>>  Hi Sandy,
>>
>>  Your situation is unusual, particularly since you've had USB port failures
>>  on 2 different RPi4B boards---with no peripherals attached!
>>
>>  Was the same power supply in use both times?
>>
>>  Also, is there any transmitting antenna nearby?
>>
>>  Do you run high power on HF?
>>
>>  If you go to a bash shell prompt (admin menu #9) and run: "dmesg"
>>  do you see any warnings (like under-voltage) listed?  For example:
>>
>>
>>  [890066.130525] Under-voltage detected! (0x00050005)
>>  [890274.141376] Voltage normalised (0x00000000)
>>
>>  I've only had USB port failures on 2 occasions. First was due to running
>>  high power on HF.  The second time was a direct lightning strike.  I've
>>  never had any other failures, with dozens of RPi4B boards continuously in
>>  use.
>>
>>
>>  73, David K4FXC
>>
>>
>>  On Mon, 13 Mar 2023, Sandy via ARM-allstar wrote:
>>
>>  > David,
>>  >
>>  > I am using the 3amp wall wart. Same as supplied with the Shari kits.
>>  > I replaced the RPi4 with another RPi 4. In fact just swapped the sd card
>>  > into the
>>  > replacement and it booted up just fine.
>>  > A check of the log reveals nothing about overloaded usb-ports.
>>  > This is the second RPi4 that I have had problems with the usb-ports.
>>  > The first one was an 8gb Pi4. The usb-ports quit working altogether.
>>  > I had a keyboard and mouse pugged in.
>>  >
>>  > 73,
>>  >
>>  >
>>  >
>>  > Sandy - w9sbe
>>  >
>>  >
>>  >
>>  >
>>  > ------ Original Message ------
>>  > From: "David McGough via ARM-allstar" <arm-allstar at hamvoip.org>
>>  > To: "David McGough via ARM-allstar" <arm-allstar at hamvoip.org>
>>  > Cc: "David McGough" <kb4fxc at inttek.net>
>>  > Sent: 3/12/2023 9:41:57 PM
>>  > Subject: Re: [arm-allstar] Linux log
>>  >
>>  > >
>>  > >Hi Sandy,
>>  > >
>>  > >I just saw this message and forwarded it to the arm-allstar list.  The
>>  > >original posting To: address was wrong (see original message, below).
>>  > >
>>  > >With nothing connected to any USB ports on your RPi4B, those are
>>  > >definitely strange messages!
>>  > >
>>  > >How are you powering the RPi4B (what type power supply, how is it
>>  > >attached to the RPi)?    Have you tried a different power supply?
>>  > >
>>  > >
>>  > >73, David K4FXC
>>  > >
>>  > >
>>  > >
>>  > >
>>  > >On Sun, 12 Mar 2023, David McGough via ARM-allstar wrote:
>>  > >
>>  > >>
>>  > >>
>>  > >>  -------------------------------------------------------------------------------------
>>  > >>  Date: Sat, 11 Mar 2023 17:13:53 +0000
>>  > >>  From: Sandy <w9sbe at comcast.net>
>>  > >>  To: ARM-allstar <arm-allstar-bounces at hamvoip.org>
>>  > >>  Subject: Linux log
>>  > >>
>>  > >>
>>  > >>  Hi,
>>  > >>  I am having a problem with my Hamvoip Hub.
>>  > >>  It randomly disconnects all connections.
>>  > >>  It doesn't reboot. It just looses connection it seems.
>>  > >>  The Linux log shows that I have an over-current on usb ports?
>>  > >>
>>  > >>  Mar 11 11:00:06 43628 kernel: usb 1-1-port1: over-current change #1334522
>>  > >>  Mar 11 11:00:06 43628 kernel: usb usb2-port2: over-current change #1334258
>>  > >>  Mar 11 11:00:06 43628 kernel: usb 1-1-port2: over-current change #1332808
>>  > >>  Mar 11 11:00:07 43628 kernel: usb usb2-port3: over-current change #1334258
>>  > >>  Mar 11 11:00:07 43628 kernel: usb 1-1-port3: over-current change #1333286
>>  > >>  Mar 11 11:00:07 43628 kernel: usb usb2-port4: over-current change #1334258
>>  > >>  Mar 11 11:00:07 43628 kernel: usb 1-1-port4: over-current change #1335670
>>  > >>  Mar 11 11:00:07 43628 kernel: usb usb2-port4: over-current condition
>>  > >>  Mar 11 11:00:07 43628 kernel: usb usb2-port1: over-current change #1334259
>>  > >>  Mar 11 11:00:07 43628 kernel: usb 1-1-port1: over-current change #1334523
>>  > >>  Mar 11 11:00:07 43628 kernel: usb usb2-port2: over-current change #1334259
>>  > >>  Mar 11 11:00:07 43628 kernel: usb 1-1-port2: over-current change #1332809
>>  > >>  Mar 11 11:00:08 43628 kernel: usb usb2-port3: over-current change #1334259
>>  > >>  Mar 11 11:00:08 43628 kernel: usb 1-1-port3: over-current change #1333287
>>  > >>  Mar 11 11:00:08 43628 kernel: usb usb2-port4: over-current change #1334259
>>  > >>  Mar 11 11:00:08 43628 kernel: usb 1-1-port4: over-current change #1335671
>>  > >>  Mar 11 11:00:08 43628 kernel: usb usb2-port4: over-current condition
>>  > >>  Mar 11 11:00:08 43628 kernel: usb usb2-port1: over-current change #1334260
>>  > >>  Mar 11 11:00:08 43628 kernel: usb 1-1-port1: over-current change #1334524
>>  > >>
>>  > >>
>>  > >>  I do not have anything connected to any usb ports (using as a hub)
>>  > >>  The RPI is a Pi4.
>>  > >>
>>  > >>  Thanks,
>>  > >>
>>  > >>  73,
>>  > >>
>>  > >>
>>  > >>
>>  > >>  Sandy - w9sbe
>>  > >>
>>  > >>
>>  > >>
>>  > >>  _______________________________________________
>>  > >>
>>  > >>  ARM-allstar mailing list
>>  > >>ARM-allstar at hamvoip.org
>>  > >>http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>  > >>
>>  > >>  Visit the BBB and RPi2/3/4 web page - http://hamvoip.org
>>  > >>
>>  > >
>>  > >_______________________________________________
>>  > >
>>  > >ARM-allstar mailing list
>>  > >ARM-allstar at hamvoip.org
>>  > >http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>  > >
>>  > >Visit the BBB and RPi2/3/4 web page - http://hamvoip.org
>>  >
>>  >
>>  >
>>
>>  _______________________________________________
>>
>>  ARM-allstar mailing list
>>ARM-allstar at hamvoip.org
>>http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>
>>  Visit the BBB and RPi2/3/4 web page - http://hamvoip.org
>>
>
>_______________________________________________
>
>ARM-allstar mailing list
>ARM-allstar at hamvoip.org
>http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>
>Visit the BBB and RPi2/3/4 web page - http://hamvoip.org


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