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by EnricoF
Sun Oct 20, 2019 8:34 am
Forum: Troubleshooting
Topic: Solved : Pi 4 wlan0 not associating with any APs after upgrade. External wifi works fine.
Replies: 11
Views: 870

Re: Pi 4 wlan0 not associating with any APs after upgrade. External wifi works fine.

I have the same problem.
Solved changing the screen resolution to a different one. I know sound crazy. See:
https://www.raspberrypi.org/forums/view ... 8&t=254640

Is it the same problem?
by EnricoF
Fri Oct 18, 2019 9:59 am
Forum: Troubleshooting
Topic: Pi 4 4GB- Wifi not working when resolution is set too high
Replies: 75
Views: 7310

Re: Pi 4 4GB- Wifi not working when resolution is set too high

Can not find any error, nor one related to mmc or SDIO in dmesg. Adding the two line: core_freq=500 core_freq_min=500 in config.txt doesn't fix the problem In my config.txt I have the line: hdmi_force_hotplug=1 hdmi_ignore_edid=0xa5000080 config_hdmi_boost=4 hdmi_group=2 disable_overscan=1 because I...
by EnricoF
Fri Oct 18, 2019 9:12 am
Forum: Troubleshooting
Topic: Pi 4 4GB- Wifi not working when resolution is set too high
Replies: 75
Views: 7310

Re: Pi 4 4GB- Wifi not working when resolution is set too high

Thanks for yours replay. Test made with only keyboard and mouse into usb2 ports. The external usb wifi dongle, connected to usb3, that always work have an external antenna and it's very close to the pi too. The wpa_supplicant error shown in wpa_cli is wrong authentication error. Don't you have the s...
by EnricoF
Fri Oct 18, 2019 8:23 am
Forum: Troubleshooting
Topic: Pi 4 4GB- Wifi not working when resolution is set too high
Replies: 75
Views: 7310

Re: Pi 4 4GB- Wifi not working when resolution is set too high

The HDMI cable is the official one supplied by the online shop.
An external usb wifi dongle works perfectly to any resolution.
I discover the problem after updating my pi today. ( apt-get dist-upgrade) Not sure was there before.
The pi is the 4GB one.
by EnricoF
Fri Oct 18, 2019 7:32 am
Forum: Troubleshooting
Topic: Pi 4 4GB- Wifi not working when resolution is set too high
Replies: 75
Views: 7310

Re: Pi 4 4GB- Wifi not working when resolution is set too high

Hi to all, Luckily I found this post, I was becoming crazy. I have the same problem can not connect to the wifi. So I made same test at different resolution. I connected to the access point at a lower resolution and then try to load fast.com at different screen resolutions. Here the results (yes = w...
by EnricoF
Sat Aug 11, 2018 6:57 pm
Forum: Troubleshooting
Topic: The Pi WiFi on a zero W.
Replies: 2
Views: 241

The Pi WiFi on a zero W.

Ciao, I'm using e pi Zero W . I successfully installed the access point but when I’m going to the site ansa.it with my phone, not with the PC, the access point stop working, and I have to restart the hostapd to be able to use it again. If I use a VPN on the phone and visit the site the AP doen't hav...
by EnricoF
Sat Dec 10, 2016 12:36 pm
Forum: Java
Topic: PI2GO Lite robot and the CamJam EduKit #3 with Java
Replies: 0
Views: 903

PI2GO Lite robot and the CamJam EduKit #3 with Java

Ciao to everybody, I just want to put some evidence on this Java library that I have made https://github.com/fustinoni-net/PiRobotPlatform It's a Java API to control: Pi2Go-Lite Robot Kit ( http://pi2go.co.uk/ ) CamJam EduKit 3 – Robotics ( http://camjam.me/?page_id=1035 ) generic robots based on th...

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