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

Tue Oct 18 14:22:18 EDT 2022

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 at gmail.com> 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 at gmail.com> wrote:
>
>> On Wed, Oct 12, 2022 at 11:21 AM Malatesh <malatesh10 at gmail.com> 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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