vc4.ko causes another misterious error

[Stefan Wahren]

Hi Ryutaroh,

Am 21.03.21 um 01:06 schrieb Ryutaroh Matsumoto:
> Hi Stefan, thank you for the comment.
>
> ...
> But 5GHz WiFi remains unsable with vc4.ko loaded.
> I do not have much inconvenience as blacklisting vc4.ko makes WiFi usable.
> dmesg output with the latest Debian packages is attached
> (with vc4.ko loaded).

sorry, this error description isn't helpful. Wifi especially 802.11ac
has a little bit more than a simple on/off switch.

Which wifi channel do you use?
Can you provide the output of "iw reg get", "iw list" and "ifconfig
wlan0" in case the issue occurs?
Is it still correct that the wifi connection is established, but higher
communication like IP doesn't work?
Can you please provide the content of
"/lib/firmware/brcm/brcmfmac43455-sdio.raspberrypi,4-model-b.txt"

Best regards

>
> Best regards, Ryutaroh