# Fedora Veloview5.1 Cannot Read Data From sensor VLP-16
**URL:** https://discourse.paraview.org/t/fedora-veloview5-1-cannot-read-data-from-sensor-vlp-16/11507
**Category:** LidarView, Lidar, and SLAM
**Created:** [February 26, 2023, 6:32pm UTC](https://discourse.paraview.org/t/fedora-veloview5-1-cannot-read-data-from-sensor-vlp-16/11507 "2023-02-26T18:32:46Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@CJCY](https://discourse.paraview.org/u/CJCY)
#### Post date: [February 26, 2023, 6:32pm UTC](https://discourse.paraview.org/t/fedora-veloview5-1-cannot-read-data-from-sensor-vlp-16/11507/1 "2023-02-26T18:32:46Z")
The application stats up fine, but is not able to get any data from the sensor (its a VLP16 aka Puck). I am having no issues when passing the ethernet into a Windows VM and reading it with Veloview 3.5 (newer versions require hardware acceleration for QT)
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### Author:  [@Gatien\_Ferret](https://discourse.paraview.org/u/Gatien_Ferret)
#### Post date: [March 1, 2023, 4:12pm UTC](https://discourse.paraview.org/t/fedora-veloview5-1-cannot-read-data-from-sensor-vlp-16/11507/2 "2023-03-01T16:12:14Z")
Hello @CJCY , as far as I know, we have not tested Veloview on Fedora, so I cannot guarantee there is no issue specifically there, but that looks like a network configuration issue.
Are you able to see the data being streamed on the network ( using wireshark tool for instance ) ? And if so, are you able to share a pcap file you would have captured way ?
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### Author:  [@CJCY](https://discourse.paraview.org/u/CJCY)
#### Post date: [March 3, 2023, 8:16pm UTC](https://discourse.paraview.org/t/fedora-veloview5-1-cannot-read-data-from-sensor-vlp-16/11507/3 "2023-03-03T20:16:58Z")
I just tested and I am able to get the data from Wireshark just fine. Here is the file: [Send](https://send.vis.ee/download/4ec65c664f953d01/#qfXPU9PUuIwp5zetRJ-aKA)
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### Author:  [@CJCY](https://discourse.paraview.org/u/CJCY)
#### Post date: [March 3, 2023, 8:25pm UTC](https://discourse.paraview.org/t/fedora-veloview5-1-cannot-read-data-from-sensor-vlp-16/11507/4 "2023-03-03T20:25:21Z")
Maybe is it because I am on a laptop and am using a dongle to get the data? and maybe I need to select the adapter as a source
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### Author:  [@Gatien\_Ferret](https://discourse.paraview.org/u/Gatien_Ferret)
#### Post date: [March 8, 2023, 5:59pm UTC](https://discourse.paraview.org/t/fedora-veloview5-1-cannot-read-data-from-sensor-vlp-16/11507/5 "2023-03-08T17:59:36Z")
Hi @CJCY , sorry we had not downloaded the file in time and it now unavailable, could you please send it again ?
Thanks.
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### Author:  [@CJCY](https://discourse.paraview.org/u/CJCY)
#### Post date: [March 8, 2023, 6:04pm UTC](https://discourse.paraview.org/t/fedora-veloview5-1-cannot-read-data-from-sensor-vlp-16/11507/6 "2023-03-08T18:04:23Z")
here is a google drive link: [wiresharkdump.pcap - Google Drive](https://drive.google.com/file/d/1PFD8b4WU7u9iRKm2yu7NBHjKILGOoxb1/view?usp=share_link)
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### Author:  [@Gatien\_Ferret](https://discourse.paraview.org/u/Gatien_Ferret)
#### Post date: [March 9, 2023, 12:46pm UTC](https://discourse.paraview.org/t/fedora-veloview5-1-cannot-read-data-from-sensor-vlp-16/11507/7 "2023-03-09T12:46:42Z")
The pcap file seems just fine and opens without any issue in LidarView / Veloview.
One check you could also do is to simulate a stream from your pcap file.
To do so :
- use PacketFileSender utilitary that you should find in install / bin folder to stream data from the pcap on a certain UDP port. From bin folder : ./PacketFileSender path/to/pcap --lidarPort=XXX ( default is 2368, but any valid udp port should be fine ) --loop ( you can access extra options with --help )
- Open a stream on that same port ( chosen through the calibration window)
You should see your file being streamed over your local network and read in Veloview.