On Sun, Nov 19, 2017 at 02:57:21PM +0100, Lambdadroid wrote: > Hi, > > I just upgraded from 4.9.61 to 4.9.63 and noticed that there are no > longer any WiFi networks found after upgrading. > > After looking through the patches, it seems to be this brcmfmac commit > from 4.9.62. Reverting it fixes the WiFi network scan. > be5125d4fa9e: brcmfmac: setup wiphy bands after registering it first > > However, looking further at the patch, it seems like it was submitted > together with another patch that wasn't applied to 4.9: > 9ea0c307609f: brcmfmac: don't preset all channels as disabled > > Applying this patch additionally instead of reverting the broken patch > seems to fix the issue as well. > > Either way works. I'm not sure why only one of the patches were > applied to stable. They were submitted together on linux-wireless: > http://www.spinics.net/lists/linux-wireless/msg157813.html > > For reference, I tested with a BCM43362 on Android and Arch Linux. > Both didn't show any WiFi networks anymore after the update to > 4.9.62+. Thanks for letting us know about this, I've now queued up the extra patch to the 4.9-stable tree. thanks, greg k-h