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

Thu Mar 16 05:10:38 EDT 2023

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
> 