# Error while running the jupiter notebook on Kria KV260 **URL:** \ **Category:** Support\ **Created:** [February 18, 2022, 8:37pm UTC](https://discuss.pynq.io/t/error-while-running-the-jupiter-notebook-on-kria-kv260/3713 "2022-02-18T20:37:15Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![Nilz](https://avatars.discourse-cdn.com/v4/letter/n/34f0e0/32.png) [@Nilz](https://discuss.pynq.io/u/Nilz)\ **Post date:** [February 18, 2022, 8:37pm UTC](https://discuss.pynq.io/t/error-while-running-the-jupiter-notebook-on-kria-kv260/3713/1 "2022-02-18T20:37:15Z")
Hi, While executing the display\_port\_introduction notebook provided under video sub-folder of KV260 folder provided in the Jupiter lab, I encountered an error. As soon as I executed the following ```auto isplayport = DisplayPort() displayport.configure(VideoMode(1280, 720, 24), PIXEL_RGB) ``` the screen went blank. Nothing worked and I had to restart the board. I have a Dell D2020H monitor attached to the HDMI port and a Logitech USB HD C270 webcam attached to the USB port provided on the Kria KV260 board. The second error I encountered while running the USB\_webcam notebook under the common folder which is provided with the PYNQ Jupiter lab. While acquiring the image the webcam seems not to be working because every time I run the script black images appear. Please help. Thanks in Advance. Nilanjan ---
**Author:** ![marioruiz](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/marioruiz/32/2177_2.png) [@marioruiz](https://discuss.pynq.io/u/marioruiz)\ **Post date:** [February 21, 2022, 8:26am UTC](https://discuss.pynq.io/t/error-while-running-the-jupiter-notebook-on-kria-kv260/3713/2 "2022-02-21T08:26:27Z")
Hi, With the USB camera connected, can you run this in a JupyterLab terminal and report the output? ```nohighlight lsusb -t ``` Mario ---
**Author:** ![Nilz](https://avatars.discourse-cdn.com/v4/letter/n/34f0e0/32.png) [@Nilz](https://discuss.pynq.io/u/Nilz)\ **Post date:** [February 21, 2022, 9:06am UTC](https://discuss.pynq.io/t/error-while-running-the-jupiter-notebook-on-kria-kv260/3713/3 "2022-02-21T09:06:17Z")
Hello, The output of the command `lsusb -t` with the camera connected to the USB is ```auto --------------------------------------------------------------------------- NameError Traceback (most recent call last) in ----> 1 lsusb -t NameError: name 'lsusb' is not defined ``` Thanks Nilanjan ---
**Author:** ![marioruiz](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/marioruiz/32/2177_2.png) [@marioruiz](https://discuss.pynq.io/u/marioruiz)\ **Post date:** [February 21, 2022, 9:13am UTC](https://discuss.pynq.io/t/error-while-running-the-jupiter-notebook-on-kria-kv260/3713/4 "2022-02-21T09:13:35Z")
You need to run the command on a terminal, if you are running the command on a Jupter notebook you need to pre-fix `!`, for instance ```python !lsusb -t ``` You can see how to open a terminal (shell) here [Terminals — JupyterLab 3.4.5 documentation](https://jupyterlab.readthedocs.io/en/stable/user/terminal.html) ---
**Author:** ![Nilz](https://avatars.discourse-cdn.com/v4/letter/n/34f0e0/32.png) [@Nilz](https://discuss.pynq.io/u/Nilz)\ **Post date:** [February 21, 2022, 9:32am UTC](https://discuss.pynq.io/t/error-while-running-the-jupiter-notebook-on-kria-kv260/3713/5 "2022-02-21T09:32:06Z")
The output ```auto /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/5p, 480M |__ Port 1: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M |__ Port 1: Dev 3, If 1, Class=Human Interface Device, Driver=usbhid, 12M |__ Port 2: Dev 4, If 0, Class=Vendor Specific Class, Driver=rtl88x2bu, 480M |__ Port 3: Dev 6, If 3, Class=Audio, Driver=snd-usb-audio, 480M |__ Port 3: Dev 6, If 1, Class=Video, Driver=uvcvideo, 480M |__ Port 3: Dev 6, If 2, Class=Audio, Driver=snd-usb-audio, 480M |__ Port 3: Dev 6, If 0, Class=Video, Driver=uvcvideo, 480M |__ Port 5: Dev 5, If 0, Class=Vendor Specific Class, Driver=, 480M ``` ---
**Author:** ![marioruiz](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/marioruiz/32/2177_2.png) [@marioruiz](https://discuss.pynq.io/u/marioruiz)\ **Post date:** [February 21, 2022, 9:53am UTC](https://discuss.pynq.io/t/error-while-running-the-jupiter-notebook-on-kria-kv260/3713/6 "2022-02-21T09:53:02Z")
Thank you can you also report `lsusb`? ---
**Author:** ![Nilz](https://avatars.discourse-cdn.com/v4/letter/n/34f0e0/32.png) [@Nilz](https://discuss.pynq.io/u/Nilz)\ **Post date:** [February 21, 2022, 10:09am UTC](https://discuss.pynq.io/t/error-while-running-the-jupiter-notebook-on-kria-kv260/3713/7 "2022-02-21T10:09:02Z")
The output for `lsusb` is ```auto Bus 002 Device 002: ID 0424:5744 Microchip Technology, Inc. (formerly SMSC) Hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 005: ID 0424:2740 Microchip Technology, Inc. (formerly SMSC) Bus 001 Device 006: ID 046d:0825 Logitech, Inc. Webcam C270 Bus 001 Device 004: ID 2357:0115 TP-Link Bus 001 Device 003: ID 046d:c534 Logitech, Inc. Unifying Receiver Bus 001 Device 002: ID 0424:2744 Microchip Technology, Inc. (formerly SMSC) Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub ``` Nilanjan ---
**Author:** ![marioruiz](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/marioruiz/32/2177_2.png) [@marioruiz](https://discuss.pynq.io/u/marioruiz)\ **Post date:** [February 21, 2022, 10:12am UTC](https://discuss.pynq.io/t/error-while-running-the-jupiter-notebook-on-kria-kv260/3713/8 "2022-02-21T10:12:01Z")
Everything looks OK so far, a few more reports before we move to OpenCV Please report the output of these. - `ls /dev/video*` - `ls /dev/media*` - `dmesg | grep usb` (this one should be long) Mario ---
**Author:** ![Nilz](https://avatars.discourse-cdn.com/v4/letter/n/34f0e0/32.png) [@Nilz](https://discuss.pynq.io/u/Nilz)\ **Post date:** [February 21, 2022, 10:38am UTC](https://discuss.pynq.io/t/error-while-running-the-jupiter-notebook-on-kria-kv260/3713/9 "2022-02-21T10:38:24Z")
The output for `ls /dev/video*` is ```auto /dev/video0 /dev/video1 ``` The output for `ls /dev/media*` is ```auto /dev/media0 ``` The output for `dmesg | grep usb` is ```auto [1.914330] usbcore: registered new interface driver usbfs [1.914354] usbcore: registered new interface driver hub [1.914375] usbcore: registered new device driver usb [2.821531] usbcore: registered new interface driver asix [2.821568] usbcore: registered new interface driver ax88179_178a [2.821587] usbcore: registered new interface driver cdc_ether [2.821605] usbcore: registered new interface driver net1080 [2.821624] usbcore: registered new interface driver cdc_subset [2.821644] usbcore: registered new interface driver zaurus [2.821673] usbcore: registered new interface driver cdc_ncm [2.822504] usbcore: registered new interface driver uas [2.822534] usbcore: registered new interface driver usb-storage [2.824443] usbcore: registered new interface driver uvcvideo [2.825245] usbcore: registered new interface driver bcm203x [2.825269] usbcore: registered new interface driver bpa10x [2.825293] usbcore: registered new interface driver bfusb [2.825315] usbcore: registered new interface driver btusb [2.825351] usbcore: registered new interface driver ath3k [2.849752] usbcore: registered new interface driver usbhid [2.849754] usbhid: USB HID core driver [2.852800] usbcore: registered new interface driver snd-usb-audio [3.557934] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /amba/usb0@ff9d0000/status [3.568200] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /amba/usb0@ff9d0000/pinctrl-names [3.579076] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /amba/usb0@ff9d0000/pinctrl-0 [3.589606] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /amba/usb0@ff9d0000/dwc3@fe200000/status [3.601090] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /amba/usb0@ff9d0000/dwc3@fe200000/dr_mode [3.612660] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /amba/usb0@ff9d0000/dwc3@fe200000/snps,usb3_lpm_capable [3.625445] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /amba/usb0@ff9d0000/dwc3@fe200000/phy-names [3.637189] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /amba/usb0@ff9d0000/dwc3@fe200000/phys [3.648499] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /amba/usb0@ff9d0000/dwc3@fe200000/maximum-speed [3.864987] OF: overlay: WARNING: memory leak will occur if overlay removed, property: / __symbols__ /usbhub [3.937009] OF: overlay: WARNING: memory leak will occur if overlay removed, property: / __symbols__ /pinctrl_usb0_default [4.043500] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.04 [4.043505] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [4.043509] usb usb1: Product: xHCI Host Controller [4.043513] usb usb1: Manufacturer: Linux 5.4.0-1017-xilinx-zynqmp xhci-hcd [4.043516] usb usb1: SerialNumber: xhci-hcd.1.auto [4.044192] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.04 [4.044196] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [4.044202] usb usb2: Product: xHCI Host Controller [4.044206] usb usb2: Manufacturer: Linux 5.4.0-1017-xilinx-zynqmp xhci-hcd [4.044209] usb usb2: SerialNumber: xhci-hcd.1.auto [9.467914] usb 1-1: new high-speed USB device number 2 using xhci-hcd [9.616420] usb 1-1: New USB device found, idVendor=0424, idProduct=2744, bcdDevice= 2.21 [9.616427] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [9.616431] usb 1-1: Product: USB2744 [9.616435] usb 1-1: Manufacturer: Microchip Tech [9.743943] usb 2-1: new SuperSpeed Gen 1 USB device number 2 using xhci-hcd [9.768270] usb 2-1: New USB device found, idVendor=0424, idProduct=5744, bcdDevice= 2.21 [9.768278] usb 2-1: New USB device strings: Mfr=2, Product=3, SerialNumber=0 [9.768282] usb 2-1: Product: USB5744 [9.768285] usb 2-1: Manufacturer: Microchip Tech [10.027945] usb 1-1.1: new full-speed USB device number 3 using xhci-hcd [10.130240] usb 1-1.1: New USB device found, idVendor=046d, idProduct=c534, bcdDevice=29.01 [10.130250] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [10.130253] usb 1-1.1: Product: USB Receiver [10.130257] usb 1-1.1: Manufacturer: Logitech [10.222346] input: Logitech USB Receiver as /devices/platform/amba/ff9d0000.usb0/fe200000.dwc3/xhci-hcd.1.auto/usb1/1-1/1-1.1/1-1.1:1.0/0003:046D:C534.0001/input/input0 [10.280463] hid-generic 0003:046D:C534.0001: input: USB HID v1.11 Keyboard [Logitech USB Receiver] on usb-xhci-hcd.1.auto-1.1/input0 [10.284121] input: Logitech USB Receiver Mouse as /devices/platform/amba/ff9d0000.usb0/fe200000.dwc3/xhci-hcd.1.auto/usb1/1-1/1-1.1/1-1.1:1.1/0003:046D:C534.0002/input/input1 [10.284400] input: Logitech USB Receiver Consumer Control as /devices/platform/amba/ff9d0000.usb0/fe200000.dwc3/xhci-hcd.1.auto/usb1/1-1/1-1.1/1-1.1:1.1/0003:046D:C534.0002/input/input2 [10.344227] input: Logitech USB Receiver System Control as /devices/platform/amba/ff9d0000.usb0/fe200000.dwc3/xhci-hcd.1.auto/usb1/1-1/1-1.1/1-1.1:1.1/0003:046D:C534.0002/input/input3 [10.344344] hid-generic 0003:046D:C534.0002: input: USB HID v1.11 Mouse [Logitech USB Receiver] on usb-xhci-hcd.1.auto-1.1/input1 [10.423953] usb 1-1.2: new high-speed USB device number 4 using xhci-hcd [10.524625] usb 1-1.2: New USB device found, idVendor=2357, idProduct=0115, bcdDevice= 2.10 [10.524639] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [10.524654] usb 1-1.2: Product: 802.11ac NIC [10.524658] usb 1-1.2: Manufacturer: Realtek [10.524661] usb 1-1.2: SerialNumber: 123456 [10.651931] usb 1-1.5: new high-speed USB device number 5 using xhci-hcd [10.752765] usb 1-1.5: New USB device found, idVendor=0424, idProduct=2740, bcdDevice= 2.00 [10.752782] usb 1-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [10.752790] usb 1-1.5: Product: Hub Controller [10.752794] usb 1-1.5: Manufacturer: Microchip Tech [13.083907] usbcore: registered new interface driver rtl88x2bu [694.706061] usb 1-1.3: new high-speed USB device number 6 using xhci-hcd [695.023412] usb 1-1.3: New USB device found, idVendor=046d, idProduct=0825, bcdDevice= 6.04 [695.023423] usb 1-1.3: New USB device strings: Mfr=0, Product=2, SerialNumber=1 [695.023427] usb 1-1.3: Product: C270 HD WEBCAM [695.023430] usb 1-1.3: SerialNumber: BB259C60 [695.282397] input: C270 HD WEBCAM as /devices/platform/amba/ff9d0000.usb0/fe200000.dwc3/xhci-hcd.1.auto/usb1/1-1/1-1.3/1-1.3:1.0/input/input6 [695.470039] usb 1-1.3: set resolution quirk: cval->res = 384 [1263.256693] usb 1-1.3: reset high-speed USB device number 6 using xhci-hcd ``` Nilanjan ---
**Author:** ![marioruiz](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/marioruiz/32/2177_2.png) [@marioruiz](https://discuss.pynq.io/u/marioruiz)\ **Post date:** [February 22, 2022, 9:57am UTC](https://discuss.pynq.io/t/error-while-running-the-jupiter-notebook-on-kria-kv260/3713/10 "2022-02-22T09:57:22Z")
Hi, Everything looks normal in the logs… Regarding the DisplayPort, do you see the Ubuntu login screen in your monitor? Can you run this in a Jupyter Notebook? and report results ```python from pynq.lib.video import * displayport = DisplayPort() displayport.modes ``` Regarding the webcam, please try this on a notebook as well ```python import cv2 import PIL.Image capture = cv2.VideoCapture(0) print(f"Is webcam open: {capture.isOpened()}") ret, frame = capture.read() print(f"Frame read successfully?: {ret}") PIL.Image.fromarray(frame[:,:,[2,1,0]]) capture.release() ``` If everything works you should see the captured frame. If not, try to change the integer in `VideoCapture`, this number is directly related to to the `/dev/video*` Mario ---
**Author:** ![Nilz](https://avatars.discourse-cdn.com/v4/letter/n/34f0e0/32.png) [@Nilz](https://discuss.pynq.io/u/Nilz)\ **Post date:** [February 22, 2022, 5:45pm UTC](https://discuss.pynq.io/t/error-while-running-the-jupiter-notebook-on-kria-kv260/3713/11 "2022-02-22T17:45:54Z")
Hello, I am able to see the Ubuntu login screen in my monitor The output for ```auto from pynq.lib.video import * displayport = DisplayPort() displayport.modes ``` is ```auto [VideoMode: width=1600 height=900 bpp=24 fps=60, VideoMode: width=1280 height=800 bpp=24 fps=60, VideoMode: width=1152 height=864 bpp=24 fps=75, VideoMode: width=1280 height=720 bpp=24 fps=60, VideoMode: width=1280 height=720 bpp=24 fps=60, VideoMode: width=1280 height=720 bpp=24 fps=50, VideoMode: width=1024 height=768 bpp=24 fps=75, VideoMode: width=1024 height=768 bpp=24 fps=60, VideoMode: width=800 height=600 bpp=24 fps=75, VideoMode: width=800 height=600 bpp=24 fps=60, VideoMode: width=720 height=576 bpp=24 fps=50, VideoMode: width=720 height=480 bpp=24 fps=60, VideoMode: width=720 height=480 bpp=24 fps=60, VideoMode: width=640 height=480 bpp=24 fps=75, VideoMode: width=640 height=480 bpp=24 fps=60, VideoMode: width=640 height=480 bpp=24 fps=60, VideoMode: width=720 height=400 bpp=24 fps=70] ``` and the output for ```auto import cv2 import PIL.Image capture = cv2.VideoCapture(0) print(f"Is webcam open: {capture.isOpened()}") ret, frame = capture.read() print(f"Frame read successfully?: {ret}") PIL.Image.fromarray(frame[:,:,[2,1,0]]) capture.release() ``` is ```auto Is webcam open: True Frame read successfully?: True ``` **but no image appear** When I changed the the integer in `VideoCapture` , the output is ```auto Is webcam open: False Frame read successfully?: False --------------------------------------------------------------------------- TypeError Traceback (most recent call last) in 8 9 print(f"Frame read successfully?: {ret}") ---> 10 PIL.Image.fromarray(frame[:,:,[2,1,0]]) 11 capture.release() TypeError: 'NoneType' object is not subscriptable ``` ---
**Author:** ![marioruiz](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/marioruiz/32/2177_2.png) [@marioruiz](https://discuss.pynq.io/u/marioruiz)\ **Post date:** [February 22, 2022, 6:23pm UTC](https://discuss.pynq.io/t/error-while-running-the-jupiter-notebook-on-kria-kv260/3713/12 "2022-02-22T18:23:00Z")
Apologies, can you try again with this code: ```python import cv2 import PIL.Image capture = cv2.VideoCapture(0) print(f"Is webcam open: {capture.isOpened()}") ret, frame = capture.read() print(f"Frame read successfully?: {ret}") img = PIL.Image.fromarray(frame[:,:,[2,1,0]]) capture.release() img ``` The image may have not shown because the `.release()` was last executed on the cell. > When I changed the the integer in `VideoCapture` , the output is > This indicates that the right value is 0. Regarding the displayPort can you try the notebook `common/display_port_introduction.ipynb`? This one does not use a webcam, so if this works we can rule out a problem with DisplayPort. Mario ---
**Author:** ![Nilz](https://avatars.discourse-cdn.com/v4/letter/n/34f0e0/32.png) [@Nilz](https://discuss.pynq.io/u/Nilz)\ **Post date:** [February 22, 2022, 9:34pm UTC](https://discuss.pynq.io/t/error-while-running-the-jupiter-notebook-on-kria-kv260/3713/13 "2022-02-22T21:34:32Z")
The output for the code is ```auto Is webcam open: True Frame read successfully?: True ``` along with a total black image > When I changed the the integer in `VideoCapture` , the output is > This indicates that the right value is 0. **Yes**. > Regarding the displayPort can you try the notebook `common/display_port_introduction.ipynb` ? This one does not use a webcam, so if this works we can rule out a problem with DisplayPort. > The same initial problem occurs… > As soon as I executed the following ```auto isplayport = DisplayPort() displayport.configure(VideoMode(1280, 720, 24), PIXEL_RGB) ``` the screen went blank. Nothing worked and I had to restart the board. ---
**Author:** ![marioruiz](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/marioruiz/32/2177_2.png) [@marioruiz](https://discuss.pynq.io/u/marioruiz)\ **Post date:** [February 23, 2022, 10:30am UTC](https://discuss.pynq.io/t/error-while-running-the-jupiter-notebook-on-kria-kv260/3713/14 "2022-02-23T10:30:28Z")
Hi, That’s intriguing, did you verify the webcam in other machine? Regarding the DisplayPort, can you try different modes (from the ones supported)? Mario ---
**Author:** ![Nilz](https://avatars.discourse-cdn.com/v4/letter/n/34f0e0/32.png) [@Nilz](https://discuss.pynq.io/u/Nilz)\ **Post date:** [March 11, 2022, 6:40am UTC](https://discuss.pynq.io/t/error-while-running-the-jupiter-notebook-on-kria-kv260/3713/15 "2022-03-11T06:40:52Z")
Hi, The webcam is working fine in windows as well as Ubuntu that I have in my laptop. Also regarding the monitor I ran the whole program (`common/display_port_introduction.ipynb`) ,and not one cell at a time, and it worked. The **webcam** also showed the output. But neither the script that you send earlier nor the script in Jupiter lab `common/usb_webcam.ipynb` is working. I apologize for a delayed reply. Nilanjan