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Vivid Unit GPSRD++ and WIFI Troubles

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(@mark-hobson)
Posts: 5
Active Member Customer
Topic starter
 

Hi. I need some tech support. I received the Vivid Unit, Extender Board and VUE GPSDR today. I have it all put together , it boots fine. I have two issues. First, I think there's possibly a driver issue with the WIFI. It sees my network and I put in what I know to be the correct password and it keeps cycling back to the place to put the password. The other problem is that the GPSDR++ software starts up and shows the main screen then immediately crashes the system and it basically instantaneously shuts down. Please provide some trouble shooting advice and resources for these two problems. Thank you.

 
Posted : 07/11/2025 3:56 am
(@admin)
Posts: 666
Member Admin
 

Many users asked this question. We have updated the FAQ for it: https://www.uugear.com/product/vu-gpsdr/#faq

Because Vivid Unit Extender doesn't negotiate PD, a PD charger may not deliver enough current to it, even if that charger has rather high power rating. A "dumb" 5V power supply with 3A or higher output current is preferred.

 
Posted : 07/11/2025 8:34 am
(@mark-hobson)
Posts: 5
Active Member Customer
Topic starter
 

@admin Thank you.  I have ordered a 5v, 27w raspberry pi power supply.  Do you have any advice on the WIFI issue noted above?

 
Posted : 07/11/2025 4:41 pm
(@admin)
Posts: 666
Member Admin
 

@mark-hobson 

The WiFi issue is most probably due to the AP security incompatibility

The AP6212 WiFi module on Vivid Unit is rather old and it only supports WPA2.

Although most router supports both WPA3 and WPA2, modern versions of NetworkManager tend to prefer WPA3-SAE when connecting to an access point that supports both WPA2 and WPA3. If the WPA3 handshake fails, it should normally fall back to WPA2-PSK, but some older WiFi drivers don’t handle this fallback correctly. That results in the “password prompt keeps reappearing” behavior.

You may create a connection profile that forces WPA2 only. Let's say your WiFI router has SSID "CAT", you can use the commands below to create a WPA2 connection profile named "test-wpa2":

sudo nmcli connection add type wifi ifname wlan0 con-name test-wpa2 ssid "CAT"
sudo nmcli connection modify test-wpa2 wifi-sec.key-mgmt wpa-psk
sudo nmcli connection modify test-wpa2 wifi-sec.psk "your_password"
sudo nmcli connection up test-wpa2

 

 
Posted : 07/11/2025 4:50 pm
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