Subj : Re: Javascript restriction in Trixie To : All From : bp Date : Wed Dec 10 2025 10:00:02 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) .