Joshua-Riek
Debugging the brcmfmac driver
Hello.
In order to investigate the cause of the Wi-Fi error on Ubuntu 24.04, I used the kernel config from linux-rockchip and enabled debugging to rebuild the brcmfmac and brcmutil modules, but a memory access error occurred, and I was unable to perform debugging.
The error log has been deleted, so I will upload it later. Could the build settings be different from those of the drivers originally in the kernel?
What board..?
Sorry for the late reply, I had trouble collecting the logs.
ubuntu.log
The board is the Orange Pi 5 Pro, and I am also performing this debugging on the 7ji side. I was able to debug successfully there, but I encountered errors and was unable to debug properly on ubuntu-rockchip.
Success-arch.log
Is the kernel for Ubuntu 24.04 based on linux-rockchip?
I would appreciate it if you could let me know.
Thank you.
@jamstec0, the kernel is based on linux-rockchip, noble branch. Native compilation is out of the box, but I had to make several changes for cross compilation (gcc-14.2.0) and to avoid every module (re)build causes a whole recompile and to support custom kernels with a tag e.g. 6.1.0-1025+debug-rockchip.
This bug seems to be caused by the current wpa_supplicant and is also occurring on raspberry pi devices and other devices.
As a solution, adding brcmfmac.feature_disable=0x82000 to the boot parameter will prevent this problem.
Hopefully others will not have to spend 4 months looking for the cause.
@Joshua-Riek Sorry for the inconvenience.