{actor} created a new topic '...

Last night I set up with my AT6RC and ASI1600mm for the first time in a long time. I have an ASI174mm mini for a guide imager. Things seemed okay at first, and polar alignment went smoothly.

I'm running on an old laptop (Thinkpad T420s) running Ubuntu 20.04.

Then, I started getting various USB errors. I would lose my connection to the scope. I would lose my connection to the main camera. I would have to unplug everything and restart. Eventually I tailed syslog and saw a constant stream of usb reset messages. Once those started, everything would go downhill rapidly.

roland@astro-02:~$ lsusb
Bus 002 Device 004: ID 17ef:1003 Lenovo Integrated Smart Card Reader
Bus 002 Device 003: ID 8086:0187 Intel Corp. 
Bus 002 Device 046: ID 0403:6015 Future Technology Devices International, Ltd Bridge(I2C/SPI/UART/FIFO)
Bus 002 Device 042: ID 2109:2817 VIA Labs, Inc. 
Bus 002 Device 045: ID 03c3:1749  
Bus 002 Device 044: ID 03c3:1f01  
Bus 002 Device 043: ID 03c3:1604  
Bus 002 Device 041: ID 04b4:6572 Cypress Semiconductor Corp. Unprogrammed CY7C65642 hub
Bus 002 Device 040: ID 2109:2817 VIA Labs, Inc. 
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 0a5c:217f Broadcom Corp. BCM2045B (BDC-2.1)
Bus 001 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

device 45 is unnamed, so I had to dig a bit

Bus 002 Device 045: ID 03c3:1749  
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x03c3 
  idProduct          0x1749 
  bcdDevice            0.00
  iManufacturer           1 ZWO
  iProduct                2 ASI174MM Mini
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
  ...

Unfortunately, I didn't check the other times to verify it was only and always this device. I'll try some daytime connectivity testing to see if I can figure this out, or maybe try again tonight and leave that 174mm unplugged to see if it's only that. The 174m was plugged in at times to a USB hub, and at other times (when I captured the above) to my ASI1600mm.

The only thing close to this I've found was here: github.com/indilib/indi/issues/950 and that was two years ago and doesn't have a clear resolution (nor is it clear to me it's the same thing except for the general USB reset symptom).

Any suggestions besides trying again? I do have second laptop with the same set of software I can try, and I can swap out cables. I had already tried various USB ports on the laptop and swapped out the main USB cable but that was before I found the link to the 174mm; I'll try to reproduce this and then swap out those cables.

Read More...