#Raspberry pi not connecting to wifi

94 messages · Page 1 of 1 (latest)

carmine dirge
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Hey guys
So my Raspberry pi 4 B won't connect to the internet. I'm using the correct wifi password etc and have tried ethernet. Still doesn't work though. Any ideas how to get it to work?

strong axle
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Are you sure your Pi is booted up? Do you have a HDMI output now?

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Also you should fix your tags before mete sees it: #readme message

carmine dirge
carmine dirge
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and i wasnt getting any hdmi output

strong axle
carmine dirge
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im using mainsailos

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but ok

strong axle
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MainsailOS is a linux distribution. Your Pi isn't connecting to wifi so this is more like a linux problem than MainsailOS but I can understand your confusion there

carmine dirge
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ok

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ok so

strong axle
carmine dirge
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yeah

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the wifi is 2.4ghz

strong axle
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You shouldn't share your password online, just as a quick tip

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You are from Canada?

carmine dirge
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yeah

strong axle
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I am currently reading up the LED light, as the LED should stay red and not green

carmine dirge
strong axle
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The green LED shouldn't stay on the whole time.

carmine dirge
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pis been on for almost 10 mins and still hasnt connect to wifi

carmine dirge
strong axle
carmine dirge
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Model 4 (B) green LED blinks regular when the PI doesn't detect the SD-card, and irregular when it boots, if the LED stays inactive (with power on) perhaps you need to repair the BOOT EEPROM code (note ONLY the RPI4 has a boot EEPROM, so don try to update the EEPROM on any other model than the RPI4).

strong axle
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If your green LED isn't blinking, then try to remove the power cable, then remove the SD card and then power your pi on without a sdcard and let me know what happens

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There is nothing with the staying on, if I didn't overread something. So I got to the LED warning flash codes in the fourth post under the table.

carmine dirge
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ok

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its doing 8 flahesh

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Long flashes Short flashes Status
0 3 Generic failure to boot
0 4 start*.elf not found
0 7 Kernel image not found
0 8 SDRAM (synchronous dynamic random-access memory) failure
0 9 Insufficient SDRAM
0 10 In HALT state
2 1 Partition not FAT
2 2 Failed to read from partition
2 3 Extended partition not FAT
2 4 File signature/hash mismatch - Pi 4
4 4 Unsupported board type
4 5 Fatal firmware error
4 6 Power failure type A
4 7 Power failure type B

strong axle
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Its very-very unlikely the EEPROM content is corrupted, (all RPI's are tested in the factory) but to check if this the case, unplug everything from the Raspberry Pi 4, including the SD card, and then turn the power back on.
If the green LED blinks with a repeating four blink pattern then the bootloader is running correctly, and indicating that start.elf has not been found.
carmine dirge
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i have a 4b

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the last post

strong axle
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Yes I understood that. Your Pi is blinking 8 times instead of 4, if there is nothing connected. So if I understand it correctly, it seem like an EEPROM corruption. Did your Pi work previously?

carmine dirge
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yeah

strong axle
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No native speaker, so can be that I am misunderstanding it.

carmine dirge
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it was working previously

strong axle
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Can you try to flash something else and see if it is booting? For example a raspbian with desktop environment.

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but seems like an EEPROM corruption somehow

carmine dirge
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if i do another os, it works

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like it holds the green light

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and like connects

strong axle
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and only MainsailOS is failing?

carmine dirge
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yeah

strong axle
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Now I understand your MainsailOS tag.

carmine dirge
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yeah

strong axle
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What exact version are you flashing with the pi imager?

carmine dirge
strong axle
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It should be directly on your SD Card.

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First I would try to get a HDMI output to be sure the Pi is really booting up. Also you can read the WiFi-README.txt to try to manually setup the wifi.

strong axle
carmine dirge
carmine dirge
strong axle
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Can you try to flash another OS on this one and see if it is working? Maybe it's just a bad SD card then

carmine dirge
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sure i'll do that

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i just gotta make a backup of it cause it has some other configs and another os which isn't on the imager

strong axle
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Try that one with another OS first and if it isn't working, try the one that was working with another OS

carmine dirge
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yeah

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im gonna do that

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config.txt

carmine dirge
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@strong axle im getting no output from the rpi

white ember
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Ok, here a few hints

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If you flashed the sdcard new and put it in that pi there are tasks to be done, before anything else is working

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its doing at least 3 Reboots on its own

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Especcially wenn you renamed your user to something different it will take around 15 Mins ( depending on SDCArd Size) to show up

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an output on HDMI should be givven if there is no output and your screen stays blank it is mostlikely coruppted hardware

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Either the SDCard has an Error or the pi itself

strong axle
carmine dirge
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and switches over

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but i get no output

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if i try to update EEPROM, i get 8 blinks

strong axle
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Do you get a HDMI output?

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The HDMI output should be green according to the docs

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But if updating the EEPROM doesn't work too and you get an 8 blinking pattern. My guess would be SDRAM failure. That is nothing you can fix yourself.
Maybe @white ember got another idea.

strong axle
carmine dirge
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i noticed that the chip next to the usb port gets very hot

white ember
lapis bolt
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If you need your finger to measure it than it works like, if you can have the finger on it than it is ok if you need to pull it away immediately than the component is fried. Better would be to use a ir thermometer or an ir camera

carmine dirge
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ok

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so

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ist somehow working

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ig bday luck

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like its in raspbian

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i got mailsail