Anonymous
6/9/2025, 3:52:04 PM No.1529380
Anyone have a Raspberry Pi 4B that they can pot the lsmod for? My wireless isn't working and I don't know what modules I'm missing.
Thread 1529380 - /wsr/ [Archived: 1176 hours ago]
Anonymous
6/10/2025, 2:18:30 AM No.1529437
Don't have that hardware but here's my two cents:
https://linux-hardware.org/?view=computers&vendor=Raspberry+Pi+Foundation&model=Raspberry+Pi+4+Model+B+%28All%29
These probes indicate that brcmfmac is the only wireless driver being used by most of these devices, and your brcmfmac seems to not be loading. I would start from the assumption you need to resolve a problem with brcmfmac instead of loading other modules. I searched the errors from your image to find other cases, but the results varied. Two had to swap a firmware file, one had physically broken their chip, and one thread discussed swapping their power supply or enabling overvolting to ensure the wireless card is getting proper power.
I would start by connecting your Pi via Ethernet or phone tethering and running your package manager's updates. You didn't give a timeline of how long you've used the device or when the problem started, so a reasonable assumption is that it started after an update, or this is a new device that has never been updated. Going online should also trigger firmware updates in the background from fwupd. This step is easy to do, and going online rules out software issues in the network stack having any part in the blame. Disconnect your Ethernet/phone, restart, and see if it works.
Next, you should try booting into a live CD and see if you can get this wireless card to work on another installation. This rules out catastrophic hardware failure and also demonstrates that you can reinstall if you can't figure out this problem later.
The power supply issue is plausible. Mess around with this if you don't have the official power cable.
Good luck!
https://linux-hardware.org/?view=computers&vendor=Raspberry+Pi+Foundation&model=Raspberry+Pi+4+Model+B+%28All%29
These probes indicate that brcmfmac is the only wireless driver being used by most of these devices, and your brcmfmac seems to not be loading. I would start from the assumption you need to resolve a problem with brcmfmac instead of loading other modules. I searched the errors from your image to find other cases, but the results varied. Two had to swap a firmware file, one had physically broken their chip, and one thread discussed swapping their power supply or enabling overvolting to ensure the wireless card is getting proper power.
I would start by connecting your Pi via Ethernet or phone tethering and running your package manager's updates. You didn't give a timeline of how long you've used the device or when the problem started, so a reasonable assumption is that it started after an update, or this is a new device that has never been updated. Going online should also trigger firmware updates in the background from fwupd. This step is easy to do, and going online rules out software issues in the network stack having any part in the blame. Disconnect your Ethernet/phone, restart, and see if it works.
Next, you should try booting into a live CD and see if you can get this wireless card to work on another installation. This rules out catastrophic hardware failure and also demonstrates that you can reinstall if you can't figure out this problem later.
The power supply issue is plausible. Mess around with this if you don't have the official power cable.
Good luck!
Replies:
Anonymous
6/10/2025, 6:45:14 AM No.1529467
>>1529437
The power supply was fine. I replaced all the retarded boot files (start4.elf or whatever the fuck) and it started working.
Then it kept disconnecting, switching to wext instead of nl80211 fixed that.
I really hate the hardware, it's such fucking garbage. The only reason I'm using it is because the USB port can do isochronous transfers, while my Orin dev kit only does bulk transfers.
The power supply was fine. I replaced all the retarded boot files (start4.elf or whatever the fuck) and it started working.
Then it kept disconnecting, switching to wext instead of nl80211 fixed that.
I really hate the hardware, it's such fucking garbage. The only reason I'm using it is because the USB port can do isochronous transfers, while my Orin dev kit only does bulk transfers.
Replies:
Anonymous
6/10/2025, 7:37:37 AM No.1529480
Replies:
Anonymous
6/10/2025, 4:10:34 PM No.1529506
>>1529480
I'm trying to get my Raspberry Pi 4B to act like a webcam like in https://www.raspberrypi.com/tutorials/plug-and-play-raspberry-pi-usb-webcam/
I can get the UVC gadget set up (possibly incorrectly), but I don't know how to get it to write an image to /dev/video0 now. AI is trying to help me, but it's retarded and keeps going in circles. I'm not even sure if my shit's set up correctly, since it looks like it's not treating it as a video input? Or it is and I don't know what the fuck I'm looking at.
I really need to buy one of the same devices in the tutorial and get it set up so I can compare exactly what the original is doing.
I'm trying to get my Raspberry Pi 4B to act like a webcam like in https://www.raspberrypi.com/tutorials/plug-and-play-raspberry-pi-usb-webcam/
I can get the UVC gadget set up (possibly incorrectly), but I don't know how to get it to write an image to /dev/video0 now. AI is trying to help me, but it's retarded and keeps going in circles. I'm not even sure if my shit's set up correctly, since it looks like it's not treating it as a video input? Or it is and I don't know what the fuck I'm looking at.
I really need to buy one of the same devices in the tutorial and get it set up so I can compare exactly what the original is doing.