MSGID: <10h9qcn$1114o$1@dont-email.me> 833d5df1   
   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: 1100   
   REPLYADDR bp@www.zefox.net   
   REPLYTO 3:633/10 UUCP   
   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.   
      
   A chance  dmesg output reported that owon was associated with tty1. The   
   obvious    
   candidate for conflict was gtkterm, which occupied tty0. Alas, killing gtkterm    
   and removing the ft232 usb-serial adapter didn't fix/change anything.   
      
   As an aside, I also tried connecting with the Owon tty using gtkterm.   
   Can't get a rise out of it by tinkering with the speed or sending break.   
   That probably isn't relevant, but it did surprise me a little. I thought   
   at least some garbage would appear if I sent a carriage return.   
      
   Thanks for reading,   
      
   bob prohaska   
      
       
      
   --- PyGate Linux v1.5.2   
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)   
   SEEN-BY: 105/81 106/201 128/187 129/14 305 153/7715 154/110 218/700   
   SEEN-BY: 226/30 227/114 229/110 112 134 200 206 275 300 317 400 426   
   SEEN-BY: 229/428 470 616 664 700 705 266/512 291/111 292/854 320/219   
   SEEN-BY: 322/757 342/200 396/45 460/58 633/10 280 414 418 420 422   
   SEEN-BY: 633/509 2744 712/848 770/1 902/26 2320/105 5020/400 5075/35   
   PATH: 633/10 280 229/426