I am pretty sure I'm having this problem on a Toshiba Chromebook 2 (CB35-B3340) running 16.04 fully updated as of this week. I get the ethernet up/down arrows, there is no ethernet on this laptop. I also get the state where it is disconnected and not showing any wifi networks. It seems to be related to suspend/wake, but doesn't always happen.
$ lspci |grep -i net 01:00.0 Network controller: Intel Corporation Wireless 7260 (rev bb) ii network-manager 1.2.0-0ubuntu0.16.04.3 amd64 ii network-manager-gnome 1.2.0-0ubuntu0.16.04.3 amd64 ii network-manager-pptp 1.1.93-1ubuntu1 amd64 ii network-manager-pptp-gnome 1.1.93-1ubuntu1 amd64 Running this got things back to normal: $ sudo service network-manager restart This looked noteworthy: # dmesg |grep iwl [ 10.658028] iwlwifi 0000:01:00.0: Direct firmware load for iwlwifi-7260-17.ucode failed with error -2 [ 11.064468] iwlwifi 0000:01:00.0: loaded firmware version 16.242414.0 op_mode iwlmvm [ 11.545992] iwlwifi 0000:01:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144 [ 11.546081] iwlwifi 0000:01:00.0: L1 Enabled - LTR Disabled [ 11.546326] iwlwifi 0000:01:00.0: L1 Enabled - LTR Disabled [ 11.771068] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs' [ 11.777060] iwlwifi 0000:01:00.0 wlp1s0: renamed from wlan0 [ 12.285642] iwlwifi 0000:01:00.0: L1 Enabled - LTR Disabled [ 12.285883] iwlwifi 0000:01:00.0: L1 Enabled - LTR Disabled [ 12.491349] iwlwifi 0000:01:00.0: L1 Enabled - LTR Disabled [ 12.491592] iwlwifi 0000:01:00.0: L1 Enabled - LTR Disabled [ 461.381354] iwlwifi 0000:01:00.0: L1 Enabled - LTR Disabled [ 461.381596] iwlwifi 0000:01:00.0: L1 Enabled - LTR Disabled -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1574347 Title: [SRU] Re-read the link type if the name changed Status in NetworkManager: Fix Released Status in OEM Priority Project: Fix Released Status in network-manager package in Ubuntu: Fix Released Status in network-manager source package in Xenial: Fix Released Bug description: [Impact] NM needs to re-read the DEVTYPE after the device name changed, an example is that WiFi network list disappears from network manager applet [Testcase] 1. Boot the system. It should include a wireless device. 2. In a terminal, run 'nmcli dev'. 3. In the correct case, the line for the wireless device should read "wifi" under the TYPE column. In a failure case, it will read "ethernet". After upgrading to the new version, the repeating the above steps should give expected behavior. [Regression Potential] Potential of causing regression is relatively small for a one line change to re-read a value to be known. --- Problems:- 1. The network manager applet does not show the list of WiFI APs it can find. 2. The network manager applet does not the name of the AP to which it is connected 3. The icon of the applet shows two vertical arrows in opposite direction - the wired connection symbol and NOT the wifi connected icon. Temporary Workaround:- Log out and again log back in. To manage notifications about this bug go to: https://bugs.launchpad.net/network-manager/+bug/1574347/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
