Multiple USB Webcams on USB 3.0 Hub

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EssKayKay

New Member
ngholson said:
you would need to look up the specifications for your specific computer on the manufacturers webpage to answer that question.
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I don't even know how to do that. Dell does keep things a bit tight. I contacted their support page. That was a real joke - absolutely nonsense replies. BUT, that is what I expected.
 
.norman.

.norman.

Member
In the past Dell computers had an asset type tag / serial number on them that will give you the exact specifics about the computer, do they not do that anymore? you could just type that into their website and look the specs up quickly
 
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EssKayKay

New Member
ngholson said:
try this, locate the serial number / service tag on your Dell and type it into this, from there you should be able to learn all about your computers specs https://www.dell.com/support/home/en-us
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I do know how to use the Dell service tag. I located the specifications link. But I do not know exactly what I am looking for. Attached is a PDF of the specs page.

If interested to further review and comment that would be great but if not I don’t expect you to do much more here as I understand this is a bit more involved than usual.
 

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.norman.

.norman.

Member
EssKayKay said:
I do know how to use the Dell service tag. I located the specifications link. But I do not know exactly what I am looking for. Attached is a PDF of the specs page.

If interested to further review and comment that would be great but if not I don’t expect you to do much more here as I understand this is a bit more involved than usual.
Click to expand...
oh wow, i see what you mean.
 
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EssKayKay

New Member
Thanks again NGH. I think i'm going to contact Dell (and pay) for support. I believe there is no charge if they cannot resolve the issue. Oh well - that's on next week's agenda.
 
J

JohnPee

Member
Download a copy of USBTreeView and run it. It will show you how many USB Root hubs your computer/laptop has. Generally speaking each root hub will only support one USB camera.. Or any software identified earlier in this thread. It is a hardware limitation.
 
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EssKayKay

New Member
Good news – Bad news.
I don’t know if anyone is following this post any more but I sure hope so.

I believe this is a Windows 10 issue. I have two Dell XPS13 9350 machines configured very similarly. The only difference I am aware of is one is an i5 processor, the other an i7 (i.e., same video, hard drive, memory, OS version, etc.).

When I run the cameras on the i5 thru the 4-port hub all works perfectly. As a test, I “cloned” the i5 machine to an external USB drive. I then connected the external drive to the i7 and configure it to boot from the external drive – all cameras worked perfectly. So I know it’s not a hardware issue but presumably an OS issue.

I next performed a Windows reset on the i7 machine reinstalling Win10 but leaving all programs and files intact. The machine rebooted and the reinstall “appeared” to be OKAY. However, I could still only view one camera through the USB hub at a time. Apparently the “reset” didn’t work.

My question if you please – what Win10 setting could possibly be causing this? I really don’t want to do a complete Windows 10 reinstall if possible as you can imagine this would be very invasive. Any suggestions would be greatly appreciated.

Thanks,
Steve K.
 
T

tripletopper

Member
ngholson said:
it is a usb controller issue, you should never use an external hub with your cameras. your computer should have more than 1 usb controller installed. (for example a laptop with usb ports on both sides) make sure that your cameras are connected to different controllers. also worth checking to make sure that you are using usb3.0 or higher ports, the simple way to confirm is to look at the port on your computer, if the interior is blue or blueish-green then it is a usb3.0+ port, if it is black it is a usb2.0 port.
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If your computer has Thunderbolts you could have one USB 3.0 Port come out of each thunderbolt extension. I'm having problems running eight cameras actually for stereoscopic cameras through a single USB 3.1 but it also doubles the thunderbolt 3 so therefore if I get the thunderbolt to multi USB 3.0 hub then my camera should be better. I should be able to find out in a week or less.

If you got thunderbolt ports use them and convert them to USB 3.1
 
T

Tomasz Góral

Active Member
EssKayKay said:
Good news – Bad news.
I don’t know if anyone is following this post any more but I sure hope so.

I believe this is a Windows 10 issue. I have two Dell XPS13 9350 machines configured very similarly. The only difference I am aware of is one is an i5 processor, the other an i7 (i.e., same video, hard drive, memory, OS version, etc.).

When I run the cameras on the i5 thru the 4-port hub all works perfectly. As a test, I “cloned” the i5 machine to an external USB drive. I then connected the external drive to the i7 and configure it to boot from the external drive – all cameras worked perfectly. So I know it’s not a hardware issue but presumably an OS issue.

I next performed a Windows reset on the i7 machine reinstalling Win10 but leaving all programs and files intact. The machine rebooted and the reinstall “appeared” to be OKAY. However, I could still only view one camera through the USB hub at a time. Apparently the “reset” didn’t work.

My question if you please – what Win10 setting could possibly be causing this? I really don’t want to do a complete Windows 10 reinstall if possible as you can imagine this would be very invasive. Any suggestions would be greatly appreciated.

Thanks,
Steve K.
Click to expand...
Create new partition on I7, copy image from external drive and add boot from new partition.
Now you got (hidden partition, original partition, new partition with image from I5).
 
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EssKayKay

New Member
Thanks everyone for your suggestions. I cut to the chase and did a complete Win10 reinstall. What a pain but all is working fine now. So apparently it was some OS setting or possibly a driver that was causing the problem. Oh well, I'm back in business.

Thanks again,
Steve K.
 
Mad_Max

Mad_Max

New Member
Проблема одновременной работы более одного UVC устройства на одном корневом порту USB в windows связана с особенностью работы драйверов UVC. На некоторых версиях windows это работает но на большинстве нет. Мне удалось успешно снять ограничение на число камер путем модификации встроенного в камеры firmware, ограничив максимальную ширину канала которую запрашивает камера до приемлемых значений. Без модификации прошивки камер одновременно на одном порту они работать не будут. Мало того, на ноутбуках часто используется всего один корневой usb 2.0 контроллер и помимо внешних устройств которые вы туда подключаете на нем ещё подключена встроенная в ноутбук веб-камера.
 
Mad_Max

Mad_Max

New Member
Если кому то актуально решение проблемы я могу модифицировать прошивку камер за вознаграждение
 
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