+ linux-wireless On 4/17/2018 12:02 AM, Carl-Erik Kopseng wrote:
I have a BCM4350 on my Ubuntu 18.04 system. Until today, I could never suspend my computer, as the driver brcmfmac would crash on resume (looking in dmesg) and only a reboot would make the device reappear. Today, I found a workaround by making the pm-* commands remove and add the module before any power management action: echo 'SUSPEND_MODULES="brcmfmac"' | sudo tee -a /etc/pm/config.d/config This worked fine, but it took me quite a lot of digging, including trying out the `wl` driver, the `b43` package, and lots of tweaking. But even after going full circle and finding a fix, this still doesn't address the actual underlying problem: that brcmfmac doesn't survive hibernation and standby. Is there any data I can supply to remedy the situation? I attached the dump from wifi debugging utility to pinpoint my configuration, but it doesn't contain any dmesg output from the kernel crashes. You would probably want a more detailed output than what is supplied by dmesg anyway ...
Well. dmesg is always a start so let's have it. If you can compile the driver you could build it with CONFIG_BRCMDBG enabled and load the driver with parameter 'debug=0x80000'.
Regards, Arend
