Kernel bisection led to following output:

692763f31fc2b9d12350fb7f4daacb2f35664d3e is the first bad commit
commit 692763f31fc2b9d12350fb7f4daacb2f35664d3e
Author: Alan Stern <st...@rowland.harvard.edu>
Date:   Mon Oct 28 10:52:35 2019 -0400

    USB: Skip endpoints with 0 maxpacket length

--

The output of lsusb in comment #7 shows that an endpoint with address
0x82 shows up twice. First with 'wMaxPacketSize 0x0000 1x 0 bytes',
second 'wMaxPacketSize 0x13fc 3x 1020 bytes'.

Probably that endpoint is dropped when encountering wMaxPacketSize = 0
and no streaming interface is created.

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1861344

Title:
  uvcvideo: IPEVO Ziggi-HD document camera stops working on kernel
  4.4.0-171

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861344/+subscriptions

-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to