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by deralbert
Wed Dec 04, 2019 11:22 pm
Forum: Troubleshooting
Topic: Pi 4 4GB- Wifi not working when resolution is set too high
Replies: 77
Views: 20075

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

None of this actions helped me, I can not connect to the 5ghz network. Suggest: 1) Do you have anything connected to USB3? 2) Try REALLY low resolution - easiest way is put following line in config.txt: hdmi_safe=1 1) Yes, I use Raspberry Pi keyboard + mouse. 2) Done, it didn't help me. The problem...
by deralbert
Wed Dec 04, 2019 10:19 pm
Forum: Troubleshooting
Topic: Pi 4 4GB- Wifi not working when resolution is set too high
Replies: 77
Views: 20075

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

Hi. I also have this problem with Wi-Fi. I have Raspberry Pi model B with 4GB RAM. What have I already done: 1. sudo apt update 2. sudo apt full-upgrade 3. HDMI through interface 01 4. sudo rpi-update None of this actions helped me, I can not connect to the 5ghz network. I also tried to make the scr...
by deralbert
Tue Nov 19, 2019 1:48 pm
Forum: Beginners
Topic: RasPi 4 model B - No video when connected through CP2102
Replies: 5
Views: 393

Re: RasPi 4 model B - No video when connected through CP2102

Are you trying to power the Pi4 from the CP2102? :shock: That will not work. The 5V output from the those USB-TTL adapters is typically rated for 500mA (just a pass-through from the host USB 2.0 port). You can run a Pi0 from that, but a Pi4 will need a much higher wattage 5V power supply (the offic...
by deralbert
Mon Nov 18, 2019 5:36 pm
Forum: Beginners
Topic: RasPi 4 model B - No video when connected through CP2102
Replies: 5
Views: 393

RasPi 4 model B - No video when connected through CP2102

Hello everyone, I bought CP2102 and connected my Raspberry Pi 4 model B to the power through this device. I know that cp2102 is normally used for other purposes, but what interests me: why is there no video output through HDMI interface, if Raspberry gets power through the corresponding pins (actual...
by deralbert
Wed Nov 06, 2019 7:20 pm
Forum: Beginners
Topic: Are there BCM2711 ARM Peripherals?
Replies: 5
Views: 1355

Re: Are there BCM2711 ARM Peripherals?

The existing peripheral document seems to be correct for the GPIO with one known exception - the pull-ups and pull-downs are controlled differently and may be read as well as written. The bare metal forum people will know the correct bare metal address. So I can then use the addresses from BCM2835?...
by deralbert
Wed Nov 06, 2019 4:47 pm
Forum: Beginners
Topic: Are there BCM2711 ARM Peripherals?
Replies: 5
Views: 1355

Are there BCM2711 ARM Peripherals?

Hello everyone, my question is the following: Where can I find the specifications for Raspberry Pi 4 model B (BCM2711 ARM Peripherals)? A specification that is as informative as the one for BCM2835? I am particularly interested in the information about the GPIO on the Raspberry Pie 4 model B. I woul...

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