Can confirm this on two Lenovo x250 computers as well. Dropout occurs often, disabling/enabling network (with keyboard/hardware switch) works most often. Sometimes reboot is required. Occurs on hidden and non-hidden wireless networks.
wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.19.0-30-generic firmware=25.17.12.0 ip=192.168.0.11 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn resources: irq:45 memory:f1000000-f1001fff *-network DISABLED description: Ethernet interface physical id: 1 logical name: wwan0 serial: 86:77:7a:57:df:7e capabilities: ethernet physical configuration: broadcast=yes driver=cdc_mbim driverversion=22-Aug-2005 firmware=CDC MBIM link=no multicast=yes No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 15.04 Release: 15.04 Codename: vivid Linux boll 3.19.0-30-generic #33-Ubuntu SMP Mon Sep 21 20:58:04 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
Can confirm this on two Lenovo x250 computers as well. Dropout occurs often, disabling/enabling network (with keyboard/hardware switch) works most often. Sometimes reboot is required. Occurs on hidden and non-hidden wireless networks.
wireless
configuration: broadcast=yes driver=iwlwifi driverversion= 3.19.0- 30-generic firmware=25.17.12.0 ip=192.168.0.11 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn f1000000- f1001fff
capabilities: ethernet physical
configuration: broadcast=yes driver=cdc_mbim driverversion= 22-Aug- 2005 firmware=CDC MBIM link=no multicast=yes
resources: irq:45 memory:
*-network DISABLED
description: Ethernet interface
physical id: 1
logical name: wwan0
serial: 86:77:7a:57:df:7e
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 15.04
Release: 15.04
Codename: vivid
Linux boll 3.19.0-30-generic #33-Ubuntu SMP Mon Sep 21 20:58:04 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux