[Pkg-utopia-maintainers] Bug#839794: network-manager: wifi networks not re-scanned after disabling and enabling device

[Mark Hedges]

Package: network-manager
Version: 1.4.0-4
Severity: important

Hi.  I just upgraded stretch and got the new 4.7 kernel.

I have a Thinkpad X1 Carbon.  Fn-F8 is the wifi hardware killswitch.

When I first boot the machine, I see wifi networks in the Network
Manager applet.

If I disable wifi with Fn-F8, and re-enable wifi with Fn-F8, I see no networks.

Before the upgrade, when I re-enabled wifi it would scan available
networks and display them.

Now it displays nothing.  I cannot connect to anything.  I can't
choose any of my saved network connections, either.

It is going to be inconvenient to reboot every time I need to use
wifi.  I prefer to turn the device off when I am not using it.

Maybe the log below is relevant.  I tried disabling and re-enabling
again.  A pending scan from the previous time got stuck?

Is this related to the other bugs about randomly generating the MAC?
How do I turn that off?  I don't need that.  Wouldn't it make me seem
like I am a hostile node, to always be faking my MAC?  The whole
purpose of a MAC address is to have unique identifiers for each
hardware device on a network, so that it isn't likely for two devices
to try to use the same MAC and collide.  Randomly changing the MAC as
a default policy increases the possibility of MAC collisions.

Thanks.
Mark

Oct  4 16:51:22 walnut wpa_supplicant[2659]: rfkill: WLAN soft blocked
Oct  4 16:51:22 walnut wpa_supplicant[2659]: rfkill: WLAN soft blocked
Oct  4 16:51:22 walnut NetworkManager[3952]: <info>  [1475625082.1684]
manager: WiFi now disabled by radio killswitch
Oct  4 16:51:22 walnut wpa_supplicant[2659]: nl80211: deinit
ifname=p2p-dev-wlp4s0 disabled_11b_rates=0
Oct  4 16:51:22 walnut NetworkManager[3952]: <info>  [1475625082.1685]
device (wlp4s0): state change: disconnected -> unavailable (reason
'none') [30 20 0]
Oct  4 16:51:22 walnut systemd[1]: Starting Load/Save RF Kill Switch Status...
Oct  4 16:51:22 walnut systemd[1]: Started Load/Save RF Kill Switch Status.
Oct  4 16:51:22 walnut wpa_supplicant[2659]: nl80211: deinit
ifname=wlp4s0 disabled_11b_rates=0
Oct  4 16:51:31 walnut NetworkManager[3952]: <info>  [1475625091.5192]
manager: WiFi now enabled by radio killswitch
Oct  4 16:51:31 walnut kernel: [ 1102.716085] iwlwifi 0000:04:00.0: L1
Enabled - LTR Enabled
Oct  4 16:51:31 walnut kernel: [ 1102.717372] iwlwifi 0000:04:00.0: L1
Enabled - LTR Enabled
Oct  4 16:51:31 walnut systemd[1]: Starting Load/Save RF Kill Switch Status...
Oct  4 16:51:31 walnut systemd[1]: Started Load/Save RF Kill Switch Status.
Oct  4 16:51:31 walnut kernel: [ 1102.849546] iwlwifi 0000:04:00.0: L1
Enabled - LTR Enabled
Oct  4 16:51:31 walnut kernel: [ 1102.850070] iwlwifi 0000:04:00.0: L1
Enabled - LTR Enabled
Oct  4 16:51:31 walnut kernel: [ 1102.931906] IPv6:
ADDRCONF(NETDEV_UP): wlp4s0: link is not ready
Oct  4 16:51:31 walnut NetworkManager[3952]: <info>  [1475625091.7941]
sup-iface[0x123b6e0,wlp4s0]: supports 5 scan SSIDs
Oct  4 16:51:31 walnut NetworkManager[3952]: <info>  [1475625091.7952]
device (wlp4s0): supplicant interface state: starting -> ready
Oct  4 16:51:31 walnut NetworkManager[3952]: <info>  [1475625091.7953]
device (wlp4s0): state change: unavailable -> disconnected (reason
'supplicant-available') [20 30 42]
Oct  4 16:51:31 walnut kernel: [ 1102.989589] IPv6:
ADDRCONF(NETDEV_UP): wlp4s0: link is not ready
Oct  4 16:51:34 walnut NetworkManager[3952]: <info>  [1475625094.8022]
device (wlp4s0): supplicant interface state: ready -> inactive
Oct  4 16:51:57 walnut NetworkManager[3952]: <info>  [1475625117.8568]
device (wlp4s0): set-hw-addr: set MAC address to EE:B3:9D:D5:69:D6
(scanning)
Oct  4 16:51:57 walnut kernel: [ 1129.063086] IPv6:
ADDRCONF(NETDEV_UP): wlp4s0: link is not ready
Oct  4 16:51:57 walnut NetworkManager[3952]: <info>  [1475625117.8685]
device (wlp4s0): supplicant interface state: inactive -> disabled
Oct  4 16:51:57 walnut NetworkManager[3952]: <info>  [1475625117.8981]
device (wlp4s0): supplicant interface state: disabled -> inactive
Oct  4 16:51:57 walnut wpa_supplicant[2659]: wlp4s0: Reject scan
trigger since one is already pending
ct  4 16:53:34 walnut NetworkManager[3952]: <info>  [1475625214.7814]
device (wlp4s0): supplicant interface state: inactive -> scanning





-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.7.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages network-manager depends on:
ii  adduser                3.115
ii  dbus                   1.10.10-1
ii  init-system-helpers    1.45
ii  libaudit1              1:2.6.7-1
ii  libbluetooth3          5.36-1+b2
ii  libc6                  2.24-3
ii  libglib2.0-0           2.50.0-1
ii  libgnutls30            3.5.4-2
ii  libgudev-1.0-0         230-3
ii  libmm-glib0            1.6.2-1
ii  libndp0                1.6-1
ii  libnewt0.52            0.52.18-3
ii  libnl-3-200            3.2.27-1
ii  libnm0                 1.4.0-4
ii  libpam-systemd         231-4
ii  libpolkit-agent-1-0    0.105-16
ii  libpolkit-gobject-1-0  0.105-16
ii  libreadline6           6.3-8+b4
ii  libselinux1            2.5-3
ii  libsoup2.4-1           2.56.0-1
ii  libsystemd0            231-4
ii  libteamdctl0           1.26-1
ii  libuuid1               2.28.2-1
ii  lsb-base               9.20160629
ii  policykit-1            0.105-16
ii  udev                   231-4
ii  wpasupplicant          2.5-2+v2.4-3

Versions of packages network-manager recommends:
ii  crda             3.13-1+b1
ii  dnsmasq-base     2.76-4
ii  iptables         1.6.0-3
ii  iputils-arping   3:20150815-2
ii  isc-dhcp-client  4.3.5~b1-1
ii  modemmanager     1.6.2-1
ii  ppp              2.4.7-1+3

Versions of packages network-manager suggests:
pn  libteam-utils  <none>

-- no debconf information