MSGID: <10h8vep$oq21$3@dont-email.me> 8b22ba69   
   REPLY: <6bm*d+FtA@news.chiark.greenend.org.uk> c06f328e   
   PID: PyGate 1.5.2   
   TID: PyGate/Linux 1.5.2   
   CHRS: ASCII 1   
   TZUTC: 0000   
   REPLYADDR tnp@invalid.invalid   
   REPLYTO 3:633/10 UUCP   
   On 09/12/2025 10:46, Theo wrote:   
   > bp@www.zefox.net wrote:   
   >> [apologies for the wide lines]   
   >>   
   >> Theo  wrote:   
   >>>   
   >>> Depending on what kind of device it appears as (serial, keyboard, mass   
   >>> storage, network, ...) see if you can work out what other app might have   
   >>> grabbed it.  ('sudo lsof' is handy here, if it appears as a device node   
   that   
   >>> you can grep for)   
   >>   
   >> Sudo lsof is loquatious, but not obviously informative. These tests were   
   >> on a Pi5 running up-to-date Bookworm, but the behavior is outwardly the   
   >> same as Trixie on Pi2.   
   >    
   > What I'm looking for is something having grabbed the USB device. This is   
   > hard to specify without knowing how the OWON does its USB, but for example   
   > if it was serial I'd 'lsof | grep /dev/tty' and look for things using the   
   > /dev/ttyUSB0 or /devttyACM0 device the OWON probably uses.   
   >    
   > Since the OWON app has failed to grab the USB you're looking for other apps   
   > that have grabbed it, ie not at the OWON app.   
   >    
   > Theo   
   OOI I discovered a weird thing   
   IF I have a raspberry PI PICO plugged into my desktop as a power supply    
   and running code , then my PC does not detect when the samsung mobile    
   phone is plugged in...unless I unplug the PI first...   
      
   My friend also reports weird shit with his (PI's) USB. I think it's not    
   as rock solid as we sometimes assume.   
      
      
      
      
   --    
   There is something fascinating about science. One gets such wholesale    
   returns of conjecture out of such a trifling investment of fact.   
      
   Mark Twain   
      
      
   --- PyGate Linux v1.5.2   
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