On 7/14/20 4:54 PM, Walter Cazzola wrote:
> I've just bought an Ipevo VZ-X document camera and I've some hard times to
> have it running with my Linux Box (a dell precision m6800 running Fedora
> 31).
We've been using older USB-only Ipevo document cameras for several years
with no problems.
> When it is recognized dmesg says:
>
> [25080.302042] Code: Bad RIP value.
> [25082.706544] usb 3-2: 9:2: cannot get min/max values for control 2
> (id 9)
> [25082.707231] usb 3-2: USB disconnect, device number 113
> [25082.950597] usb 3-2: new high-speed USB device number 114 using
> xhci_hcd
> [25083.079064] usb 3-2: New USB device found, idVendor=1778,
> idProduct=d120, bcdDevice=20.09
> [25083.079070] usb 3-2: New USB device strings: Mfr=1, Product=2,
> SerialNumber=0
> [25083.079073] usb 3-2: Product: IPEVO VZ-X
> [25083.079077] usb 3-2: Manufacturer: IPEVO Inc.
> [25083.081157] uvcvideo: Found UVC 1.00 device IPEVO VZ-X (1778:d120)
Do an "ls -l /dev/video*" before plugging it in and then again after
it's recognized to see if any devices are getting created.
What is the output of "lsusb -v" when it's recognized.
Also use journalctl instead of raw dmesg to get more info and to see if
any services are picking it up.
> In the remaining cases, I get from dmesg:
>
> [32124.861677] Code: Bad RIP value.
> [32127.116392] usb 3-1: new full-speed USB device number 122 using
> xhci_hcd
> [32127.230305] usb 3-1: device descriptor read/64, error -71
Have you tried other USB ports? Do you have a USB hub you could try?
Maybe a different USB cable as well.
> When connected via wifi, I can access it through its web configurator and I
> can test its functionality but only on the browser (chrome) still it
> doesn't
> show up in any other application.
Unfortunately you can't access an IP camera through the usual video
interfaces. But you should be able to get vlc or mplayer to show it.
> Ipevo provides a version of its visualization software for linux (ubuntu)
>
> https://ipevo-api-cms.s3-us-west-1.amazonaws.com/software/visualizer/download/Linux/Visualizer_linux_1.0.5.33.zip
That's a last resort. :-) And won't work anyway if the device isn't
even connecting.
If the Visualizer software works in a Live Ubuntu USB system that may provide some insights into
module versions and options. It is possible that the Visualizer package provides some firmware blob.
There are hdmi to USB dongles -- it is quite possible that the camera uses the same chip as some dongle
which might direct you to a module that will allow you to use the camera.
It might be useful to describe how you plan to use the camera. If you plan to use video meeting tools (skype,
zoom) there are forums specific to those products where you may be able to get more effective help.