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   REPLYADDR not@telling.you.invalid   
   REPLYTO 3:770/3.0 UUCP   
   MSGID: <659cbf94@news.ausics.net> 430b8da4   
   REPLY:  f8ee2883   
   PID: SoupGate-Win32 v1.05   
   bob prohaska  wrote:   
   > crashes when a USB device is plugged into it.   
   > The Pi4 boots from a usb3 mechanical disk.   
   >   
   > Usually the culprit   
   > is a storage device, but an FT232-based usb-serial adapter did it   
   > also. The first symptom is an unresponsive menu bar and report about   
   > I/O error on the command line. The palsy grows over a few minutes   
   > as the mouse stops tracking. By that time there's nothing to do   
   > but cycle power.   
   [snip]   
   > This behavior is relatively new, sometime in the last six months   
   > or so. I don't remember it in the distant past. If I plug in a   
   > camera it's recognized without difficulty.   
   >   
   > Anybody else seen this sort of behavior or have a hint what to do?   
      
   I've found that my RPi Zeros tend to reboot when a USB device is   
   plugged in. I presume it's a power issue to do with the wimpy 600mA   
   USB plugpacks that I power them from, but as I mainly just have a   
   wireless keyboard/mouse receiver pluged in all the time it doesn't   
   worry me much. It could also be that the tracks on the PCB are too   
   narrow and dropping too much voltage due to resistance during the   
   surge when a device is connected, in which case you might want a   
   PSU that outputs nearer to the maximum safe input voltage for the   
   Pi (5.25V? 5.5V? I'm not sure if they've specified this).   
      
   The camera likely is powered by its own battery and only uses USB   
   for I/O, so with that working every time it definately suggests a   
   power issue.   
      
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