Re: work one webcam out of two webcam connect to xhci controller for 2 usb3.0 ports

jim.cromie@xxxxxxxxx · Tue, 18 Oct 2022 12:22:18 -0600

Let's keep this on the list.
I'm sure I don't have Silver Bullet answers.

On Tue, Oct 18, 2022, 11:15 AM Malatesh <malatesh10@xxxxxxxxx> wrote:
Hi.Thank you for the interest you have shown.

- both cameras work one at a time ?
[A]: No. I am using one by one and not at one time both cameras
- does order of plugin affect which one blanks ?
[A]: First plugged camera will give blank and second plugged will work

This certainly suggests two cameras are on or plugged in at the same time.
 that contradicts your first answer

- are they both the same camera model ?
[A]: No one is logitech and another is microsoft
- can you borrow a 3rd camera ?
[A]: Third camera works

I think you need to retest and permute all combinations or at least some of them.

I suspect your application doesn't know what to do with two cameras why don't you try another app and see if it works. Cheese is the one on my desktop

Actual Error:
When I click camera preview with two camera connected, one is giving error some time with "xhci_configure_reset_endpoint:4543 Error to set dequeue ptr for endpoint 3, 81, err 18, 0".
This is because "ep status is 0 and Endpoint is disabled".

Full Log:
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011861> set halted 1
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011890> real interrupt (status=0x00000008)
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011897> event[77] = 32 (0x0000000000000000 0x0c000000 0x02038000)
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011901> trb 0x0 status c
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011904> slot=2 epno=3 stream=0 remainder=0 status=12, td_event 0x0
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011907> stream_id=0
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011910>
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011940> trb halted 1, running 0
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011943>
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011944> Ep(129) No:129
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011946> Ep ID(129to3):3
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011949> dev 2, ep address 81
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011952> xfer 0xfffffe003198f148, 0
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011954> ep 81 is not started yet
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011957> ------> epno:3, Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011861> set halted 1
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011890> real interrupt (status=0x00000008)
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011897> event[77] = 32 (0x0000000000000000 0x0c000000 0x02038000)
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011901> trb 0x0 status c
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011904> slot=2 epno=3 stream=0 remainder=0 status=12, td_event 0x0
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011907> stream_id=0
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011910>
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011940> trb halted 1, running 0
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011943>
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011944> Ep(129) No:129
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011946> Ep ID(129to3):3
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011949> dev 2, ep address 81
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011952> xfer 0xfffffe003198f148, 0
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011954> ep 81 is not started yet
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011957> ------> epno:3, epstatus:0 device:2, ep_address 81
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011960> ----> Endpoint is disabled
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011962>
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011965> command[5] = 16 (0x0000000009891001, 0x00000000, 0x02034000)
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012003> real interrupt (status=0x00000008)
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012010> event[78] = 33 (0x0000000100fffdd0 0x13000000 0x02008400)
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012013> Received command event
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012042> trb 13000000, 2008400
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012046> src 16, (0x0000000009891001, 0x00000000, 0x02034000)
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012051> -----> Set dequeue ptr for EP No:3, EP Addr:81, EP Status:0, EP Error:18
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012057> [ERROR] - xhci_configure_reset_endpoint:4543 Error to set dequeue ptr for endpoint 3, 81, err 18, 0
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012061> ---> kick_ep 1 called:
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012064> endpoint is not running 3, 81, 18 device:2, ep_address 81
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011960> ----> Endpoint is disabled
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011962>
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.011965> command[5] = 16 (0x0000000009891001, 0x00000000, 0x02034000)
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012003> real interrupt (status=0x00000008)
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012010> event[78] = 33 (0x0000000100fffdd0 0x13000000 0x02008400)
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012013> Received command event
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012042> trb 13000000, 2008400
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012046> src 16, (0x0000000009891001, 0x00000000, 0x02034000)
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012051> -----> Set dequeue ptr for EP No:3, EP Addr:81, EP Status:0, EP Error:18
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012057> [ERROR] - xhci_configure_reset_endpoint:4543 Error to set dequeue ptr for endpoint 3, 81, err 18, 0
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012061> ---> kick_ep 1 called:
Oct 18 16:35:42 WT544810D076E1 kernel: <3645.012064> endpoint is not running 3, 81, 18

Regards,Malatesh

On Thu, Oct 13, 2022 at 8:45 PM <jim.cromie@xxxxxxxxx> wrote:
On Wed, Oct 12, 2022 at 11:21 AM Malatesh <malatesh10@xxxxxxxxx> wrote:

>

> Hi Team,

>

> Good Morning/Afternoon/Evening.

>

> I connect two usb webcameras and one mouse, one keyboard to  xhci controller, which has 4 usb v3.x ports.

> Here, keyboard and mouse works fine without any issue.

> But out of two cameras, only one camera works( I mean when I click preview only one camera show and one camera show blank )

>

lemme ask some obvious questions:

- both cameras work one at a time ?

- does order of plugin affect which one blanks ?

- are they both the same camera model ?

- can you borrow a 3rd camera ?

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