For some reason, nm-applet cannot scan for wireless networks with this version of wpa_supplicant. Scanning does work when using iwlist. Stepping back to 2.5-r2 fixes the issue. Not sure what I can add as logs. When using 2.6, with the problem, my journal reads: ... Oct 06 22:43:35 tanagra wpa_supplicant[1272]: wlp0s29f7u4: Failed to assign random MAC address for a scan Oct 06 22:43:35 tanagra wpa_supplicant[1272]: wlp0s29f7u4: Failed to set random MAC address Oct 06 22:43:32 tanagra kernel: IPv6: ADDRCONF(NETDEV_UP): wlp0s29f7u4: link is not ready Oct 06 22:43:32 tanagra wpa_supplicant[1272]: wlp0s29f7u4: CTRL-EVENT-SCAN-FAILED ret=-1 Oct 06 22:43:32 tanagra wpa_supplicant[1272]: wlp0s29f7u4: Failed to assign random MAC address for a scan Oct 06 22:43:32 tanagra wpa_supplicant[1272]: wlp0s29f7u4: Failed to set random MAC address ... When using older versions: no problem and no such log messages.
Are you using LibreSSL or OpenSSL?
openssl-1.0.2j
Doesn't this issue concern external drivers? NetworkManager WiFi has stopped working for me with external 8192cu driver but works well with rtl8xxxu driver which is in the kernel tree.
Also breaks it for me: paź 12 20:41:10 liwardyna kernel: cfg80211: World regulatory domain updated: paź 12 20:41:10 liwardyna kernel: cfg80211: DFS Master region: unset paź 12 20:41:10 liwardyna kernel: cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time) paź 12 20:41:10 liwardyna kernel: cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A) paź 12 20:41:10 liwardyna kernel: cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz, 92000 KHz AUTO), (N/A, 2000 mBm), (N/A) paź 12 20:41:10 liwardyna kernel: cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A) paź 12 20:41:10 liwardyna kernel: cfg80211: (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A) paź 12 20:41:10 liwardyna kernel: cfg80211: (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s) paź 12 20:41:10 liwardyna kernel: cfg80211: (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s) paź 12 20:41:10 liwardyna kernel: cfg80211: (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A) paź 12 20:41:10 liwardyna kernel: cfg80211: (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A) paź 12 20:41:10 liwardyna NetworkManager[11689]: <warn> [1476297670.8260] device (wlan0): set-hw-addr: new MAC address BE:2A:DE:50:FB:D1 not successfully set (scanning) paź 12 20:41:10 liwardyna NetworkManager[11689]: <info> [1476297670.8263] device (wlan0): supplicant interface state: inactive -> disabled paź 12 20:41:10 liwardyna NetworkManager[11689]: <info> [1476297670.8403] device (wlan0): supplicant interface state: disabled -> inactive paź 12 20:41:10 liwardyna wpa_supplicant[11703]: nl80211: Failed to open /proc/sys/net/ipv4/conf/wlan0/drop_unicast_in_l2_multicast: No such file or directory paź 12 20:41:10 liwardyna wpa_supplicant[11703]: nl80211: Failed to set IPv4 unicast in multicast filter (similar when running outside of NetworkManager as well) With either openssl or gnutls. Using external rtl8812au driver.
Looks like I'm using a kernel staging driver: /lib/modules/4.8.0-gentoo/kernel/drivers/staging/rtl8712/r8712u.ko
I experienced the same with the same kernel module (r8712u) until today. As wpa_supplicant-2.5 was removed from the tree, I decided to do some search to have it working with wpa_supplicant 2.6 and found two lines that did the trick. Just put the following in /etc/NetworkManager/NetworkManager.conf (which didn't exist on my system) : [device] wifi.scan-rand-mac-address=no Restart NetworkManager or your computer and it should start working again (with wpa_supplicant 2.6).
network manager scans with random mac addresses by default for privacy. please report broken drivers to upstream. feel free to use the workaround in comment 6 which appears valid
