Further, from syslog when it did not work:

2025-04-27T11:30:19.832185-04:00 pineapple mtp-probe: checking bus 1, device 11: "/sys/devices/pci0000:00/0000:00:08.1/0000:04:00.3/usb1/1-2/1-2.1/1-2.1.3"
2025-04-27T11:30:19.832814-04:00 pineapple mtp-probe: bus: 1, device: 11 was not an MTP device

2025-04-27T11:30:19.890693-04:00 pineapple mtp-probe: checking bus 1, device 11: "/sys/devices/pci0000:00/0000:00:08.1/0000:04:00.3/usb1/1-2/1-2.1/1-2.1.3"
2025-04-27T11:30:19.890870-04:00 pineapple mtp-probe: bus: 1, device: 11 was not an MTP device

Roger

On 27/04/2025 11:38, Roger Hill wrote:

Hi Hans.

I have gone over the checks again.

I can connect with putty just fine when USB ports is set to 1.

With ports set to 2, putty brings up the terminal screen if I connect to either of ttyACM0 or ttyACM1, but pressing Enter does nothing, no response from the QMX+.

I don't think I am missing anything.

73

Roger

8P6RX

dmesg:

[86189.609046] usb 1-2.1.3: USB disconnect, device number 9
[86192.131831] usb 1-2.1.3: new full-speed USB device number 10 using xhci_hcd
[86192.247357] usb 1-2.1.3: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00
[86192.247375] usb 1-2.1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[86192.247384] usb 1-2.1.3: Product: QMX Transceiver
[86192.247392] usb 1-2.1.3: Manufacturer: QRP Labs
[86192.303007] cdc_acm 1-2.1.3:1.0: ttyACM0: USB ACM device??? This works

Set ports to 2, power QMX+ off/on

[86268.713111] usb 1-2.1.3: USB disconnect, device number 10
[86271.110082] usb 1-2.1.3: new full-speed USB device number 11 using xhci_hcd
[86271.227391] usb 1-2.1.3: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00
[86271.227411] usb 1-2.1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[86271.227422] usb 1-2.1.3: Product: QMX Transceiver
[86271.227430] usb 1-2.1.3: Manufacturer: QRP Labs
[86271.310514] cdc_acm 1-2.1.3:1.0: ttyACM0: USB ACM device?? These do not work
[86271.454483] cdc_acm 1-2.1.3:1.5: ttyACM1: USB ACM device