Hi Geffers
actually it is at : brcmfmac: brcmf_sdio_hostmail: Unknown mailbox data content: 0x40012
sudo iw wlan0 set power_save off
here the long read
opened 12:29PM - 11 Mar 16 UTC
Bug
confirmed
Waiting for external input
Wifi Issue
I put the same sd card (running debian 8 jessie, kernel 4.1.19) from the raspber… ry pi 2 with usb wifi (EDIMAX EW-7811UN Wireless USB Adapter, 150 Mbit/s, IEEE802.11b/g/n) into the new raspberry pi 3 using integrated wlan. Since then the wlan freezes after while (several hours) of usage couldn't find out if it's due to havy wifi usage or not, because I haven't change the software I guess it has to do with the new hardware. When the wlan freezes the pi can't be reached any longer, neither ifdown + ifup nor restart networking service helps in this case, I have to reboot the system to get it back to work, syslog doesn't say much only this:
dhcpcd[522]: wlan0: fe80::8af7:c7ff:fece:5912: expired option 25,
I've tried to change these settings so far, but without improvement:
sudo nano /etc/network/interfaces
wireless-power off
sudo nano /etc/sysctl.conf
at the end of the file add the following line
vm.min_free_kbytes = 16384
sudo nano /boot/cmdline.txt
At the end of the line, add:
smsc95xx.turbo_mode=N
dwc_otg.dma_enable=1 dwc_otg.dma_burst_size=256
hopefully this helps
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