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PCE-AC88 Wifi not working after updating Ubuntu

de flag

I just updated Ubuntu and now my wifi card doesn't show up and the driver will not load. It uses the brcmfmac driver which I have tried using modprobe brcmfmac with no success.

I have tried installing firmware-b43-installer as well as others with no success either. When I boot into a previous version, 5.15, I can load brcmfmac and it works, but in 5.19 it does not.

I have tracked the issue down to what I think is this, from dmesg | grep brcm:

brcmfmac 0000:0d:00.0: brcmf_pcie_init_ringbuffers: invalid> max_flowrings(264).

There is a bug report and possible fix from this post. I do not know how to apply the fix from that post though. I need to fix this in a few days as I need Ubuntu for school.

Solution Found

I manually updated the headers to 6.3 and the wifi card works on it fully updated. I can't find the original link I used but it was similar to this install latest kernel link.

chili555 avatar
cn flag
I recommend that you try a live session of Ubuntu 23.04 which uses kernel version 6.2.0-xx and see if it works. Welcome to Ask Ubuntu.
Manic Depression avatar
id flag
I have a same error, wifi stopped working after upgrade from 22 version. What a mess again, I am so tired of these problems on Ubuntu. Please share a solution here if you find any!
chili555 avatar
cn flag
@ManicDepression Please start your own new question.
GavinGD avatar
de flag
@ManicDepression found a solution, see my updated post.
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