Problem with connecting webcam (A4 TECH USB2.0 PC Camera J)

Submitted by svkov on #1

Hi,
I installed VirtualHere on Windows 7 and love it. Thank you for making it.
But when you connect the web camera (A4 TECH USB2.0 PC Camera J), there are problems.
Could not tell what the matter is.

2017-04-26 18:03:12 INFO :>>> Starting VirtualHere USB Server v3.2.9 (Built: Apr 7 2017, 13:25:35)<<<
2017-04-26 18:03:12 INFO :Using configuration config.ini
2017-04-26 18:03:12 INFO :Server licensed to=unlicensed max_devices=1
2017-04-26 18:03:12 INFO :TCPServer starting...
2017-04-26 18:03:12 INFO :Listening on all network interfaces at port 7575 (IPv6 dual-stack)
2017-04-26 18:03:12 INFO :Registration called
2017-04-26 18:03:12 INFO :Found Full speed device [0e0f:0003] "VMware, VMware Virtual USB Mouse" at address 1
2017-04-26 18:03:29 INFO :fe80::f85c:2820:3e30:5f57 connected
2017-04-26 18:04:57 INFO :Found High speed device [0ac8:c40a] "A4 TECH, A4 TECH USB2.0 PC Camera J" at address 2
2017-04-26 18:14:44 INFO :Device 2 [0ac8:c40a] BOUND to connection 1
2017-04-26 18:14:55 INFO :Device 2 [0ac8:c40a] UNBOUND from connection 1
2017-04-26 18:15:09 INFO :Device 2 [0ac8:c40a] BOUND to connection 1
2017-04-26 18:21:29 WARNING :Failed to release claimed device USB\ROOT_HUB20\5&218E8397&0,USB\VID_0AC8&PID_C40A\6&1C8F9ED2&0&1,1 while uncapturing, Ono?ienoai ia iiiciaao eiiaiao. (0x00000016)
2017-04-26 18:21:30 WARNING :Failed to locate root devnode when rescanning, 13
2017-04-26 18:21:30 INFO :Device 2 [0ac8:c40a] SURPRISE UNBOUND from connection 1
2017-04-26 18:21:30 INFO :Unmanaging device 2 [0ac8:c40a]
2017-04-26 18:21:31 INFO :Found High speed device [0ac8:c40a] "A4 TECH, A4 TECH USB2.0 PC Camera J" at address 2
2017-04-26 20:19:19 INFO :Device 2 [0ac8:c40a] BOUND to connection 1
2017-04-26 20:19:28 INFO :Device 2 [0ac8:c40a] UNBOUND from connection 1
2017-04-26 20:31:14 INFO :Device 2 [0ac8:c40a] BOUND to connection 1
2017-04-26 20:45:47 INFO :Device 2 [0ac8:c40a] UNBOUND from connection 1
2017-04-26 22:18:47 INFO :Device 2 [0ac8:c40a] BOUND to connection 1
2017-04-27 08:52:38 INFO :Device 2 [0ac8:c40a] UNBOUND from connection 1
2017-04-27 08:52:44 INFO :Unmanaging device 2 [0ac8:c40a]

Submitted by svkov on Thu, 2017/04/27 - 18:24

#2

on the other windows OS that does not change

2017-04-27 11:04:11 INFO :>>> Starting VirtualHere USB Server v3.2.9 (Built: Apr 7 2017, 13:25:35)<<<
2017-04-27 11:04:11 INFO :Using configuration config.ini
2017-04-27 11:04:11 INFO :Server licensed to=unlicensed max_devices=1
2017-04-27 11:04:11 INFO :TCPServer starting...
2017-04-27 11:04:11 INFO :Listening on all network interfaces at port 7575 (IPv6 dual-stack)
2017-04-27 11:04:11 INFO :Registration called
2017-04-27 11:04:11 INFO :Found Full speed device [0e0f:0003] "VMware, VMware Virtual USB Mouse" at address 1
2017-04-27 11:04:11 INFO :Found High speed device [0ac8:c40a] "A4 TECH, A4 TECH USB2.0 PC Camera J" at address 2
2017-04-27 11:04:40 INFO :fe80::f85c:2820:3e30:5f57 connected
2017-04-27 11:05:47 INFO :Device 2 [0ac8:c40a] BOUND to connection 1
2017-04-27 11:08:48 WARNING :Failed to release claimed device USB\ROOT_HUB20\5&218E8397&0,USB\VID_0AC8&PID_C40A\6&1C8F9ED2&0&1,1 while uncapturing, Ono?ienoai ia iiiciaao eiiaiao. (0x00000016)
2017-04-27 11:08:49 WARNING :Failed to locate root devnode when rescanning, 13
2017-04-27 11:08:49 INFO :Device 2 [0ac8:c40a] SURPRISE UNBOUND from connection 1
2017-04-27 11:08:49 INFO :Unmanaging device 2 [0ac8:c40a]
2017-04-27 11:09:24 INFO :Found High speed device [0ac8:c40a] "A4 TECH, A4 TECH USB2.0 PC Camera J" at address 2
2017-04-27 11:09:41 INFO :Device 2 [0ac8:c40a] BOUND to connection 1

Submitted by Michael on Thu, 2017/04/27 - 18:36

#3

OK that device looks like it disconnects itself automatically just before its captured so i dont think it will be compatible with the virtualhere windows server. You need to use the virtualhere linux server which better handles unusual devices like this one. I think this webcam needs to have its "USB_RESET" command skipped and the virtualhere windows server doesnt support this whereas the linux server does.

Submitted by svkov on Thu, 2017/04/27 - 20:49

#4

VirtualHere USB Server for Linux (MIPSEL) on OpenWRT is also not working (not found where the log). When connecting directly to the Windows 7 - video is, but through VirtualHere USB Server for Linux the camera is visible connected but video not working

Submitted by Michael on Thu, 2017/04/27 - 21:26

#5

put the resolution of the video way down to e.g 160x120 and see if it works then

Submitted by svkov on Thu, 2017/04/27 - 23:04

#6

The camera has a minimum resolution of 640x480 Found it. Does not help. Direct connection - the video is, and on the network. Windows sees the camera, but no video. (But the camera led lights up the beginning of the video transmission)

Submitted by Michael on Fri, 2017/04/28 - 10:54

#7

ok can you try to use the camera via virtualhere and then ssh to your openwrt box and type logread and send all of the log output to mail [at] virtualhere.com (mail[at]virtualhere[dot]com)