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wifi issue after upgrading to 6.1.38. wlan firmware is missing #930
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What does ipmitool package? This does not install properly. Fix this issue first, please Update: To be on the safe side, I have activated the WLAN on a fresh installation of my Pi4. It works with the kernel 6.1.38+ as it should, but it takes a relatively long time, about 60s without having measured it, until the device is active. |
I have removed ipmitool and re-installed all packages that have been updated and I still have the same issue.
lsusb
sudo ifup wlan0
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another check during the startup, the new kernel cannot start wifi apparently: dmesg | grep brcm
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I did the following operation: apt-cache policy linux-image-bcm2836 and my wifi is back active, there is an issue on the 6.1.38 |
You have a second wifi adapter in the system. what is the purpose of this? Please show me the output of You are using a wpa_supplicant.conf instead of putting the wlan credentials directly into the /etc/network/interface, why ar you duing this A I have observed here that in my various kernel tests (I also frequently switch between 32 bit and 64 bit kernels) the wlan device has suddenly changed (wlan0 became wlan1, for example). This could possibly also be the case for you |
I have removed the extra wifi adapter, I used it to try to reconnect my pi4 without the need of cable. |
apt list --upgradable
this is the dmesg with 6.1.38 kernel: https://pastebin.com/e4aLQ177 |
I think I have found the cause, at least I could reproduce it: Older kernel packages also contained the wlan firmware for the onboard devices. This is no longer the case, as the firmware-brcm80211 package already contains all the latest firmware, see xbianonpi/xbian-package-kernel@74aaeae Solution to the problem: Unfortunately, this cannot be automated and must be done manually, preferably after updating the kernel package before rebooting. |
Good job, it's working now. I have renamed the ticket to help other users, thanks. |
I still have problem with wifi after kernel update. The last one where it was fine 6.1.28+ |
I don't have 5GHz WIFI here, but luckily my neighbour below me has a Fritzbox with 5GHz WIFI on channel 52 and so I can do some basic tests. Here is my result:
This leads to the conclusion that the current official firmware is somehow faulty or at least behaves differently. You can now try to get the firmware files from the 6.1.28 package and overwrite them, as you can see below:
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You're right. Your idea of replacing the firmware works. |
It's strange, there has been movement again for the last 2 years RPi-Distro/firmware-nonfree#17 |
After the upgrade process and the reboot, I loose the wifi connexion to my pi4. The upgrade finished like this:
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