Re: battery tester

[Dan Ritter <dsr@randomstring.org>]

Roy J. Tellason, Sr. wrote: 
> On Wednesday 23 October 2024 09:38:04 pm Max Nikulin wrote:
> > On 23/10/2024 21:25, Roy J. Tellason, Sr. wrote:
> > > Connecting the device with a USB cable I see it wake up,  at which point
> > > there's a menu on its screen.
> > 
> > Start "journalctl -f" as root before connecting the device. Logs may 
> > contain some hints how to communicate with it. Perhaps "udevadm monitor" 
> > with some options may provide more low level info.
> 
> I did find some info in one of the log files:
> 
> Oct 24 15:14:28 Workstation1 kernel: [1915052.140032] usb 7-1.4.4: new full-speed USB device number 13 using ehci-pci
> Oct 24 15:14:28 Workstation1 kernel: [1915052.249009] usb 7-1.4.4: New USB device found, idVendor=1a86, idProduct=7523
> Oct 24 15:14:28 Workstation1 kernel: [1915052.249012] usb 7-1.4.4: New USB device strings: Mfr=0, Product=2, SerialNumber=0
> Oct 24 15:14:28 Workstation1 kernel: [1915052.249014] usb 7-1.4.4: Product: USB Serial
> Oct 24 15:14:28 Workstation1 kernel: [1915052.249308] ch341 7-1.4.4:1.0: ch341-uart converter detected
> Oct 24 15:14:28 Workstation1 kernel: [1915052.251232] usb 7-1.4.4: ch341-uart converter now attached to ttyUSB0
> Oct 24 15:14:28 Workstation1 mtp-probe: checking bus 7, device 13: "/sys/devices/pci0000:00/0000:00:1a.7/usb7/7-1/7-1.4/7-1.4.4"
> Oct 24 15:14:28 Workstation1 mtp-probe: bus: 7, device: 13 was not an MTP device
> Oct 24 15:14:29 Workstation1 org.xfce.FileManager[1332]: thunar-volman: Unsupported USB device type "usb".
> Oct 24 15:14:29 Workstation1 org.xfce.FileManager[1332]: thunar-volman: Unsupported USB device type "ch341".
> 
> I don't recognize that mtp stuff,  and don't know how thunar-volman gets into the picture...

mtp is media transfer protocol, an alternative to USB Mass
Storage. Hence thunar volume manager.

Overall it looks like the mtp-probe is deluded and trying to
mount the unmountable.

-dsr-