networking - WLAN does not work after hibernate in HP Envy - Ask Ubuntu

resume after hibernate works fine except wlan not recover. wlan works fine after cold boot.

ifconfig shows before hibernate wlan works fine: wlo1: flags=4163<up,broadcast,running,multicast> etc. no wlan after hibernate. (ethernet there before , after hibernate.)

i tried lshw before , after hibernate. here before hibernate (excerpt):

    *-pci:2          description: pci bridge          product: wildcat point-lp pci express root port #3          vendor: intel corporation          physical id: 1c.2          bus info: pci@0000:00:1c.2          version: e3          width: 32 bits          clock: 33mhz          capabilities: pci pciexpress msi pm normal_decode bus_master cap_list          configuration: driver=pcieport          resources: irq:44 memory:c6100000-c61fffff        *-network             description: wireless interface             product: bcm43142 802.11b/g/n             vendor: broadcom limited             physical id: 0             bus info: pci@0000:08:00.0             logical name: wlo1             version: 01             serial: [removed]             width: 64 bits             clock: 33mhz             capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless             configuration: broadcast=yes driver=wl0 driverversion=6.30.223.248 (r487574) ip=[removed] latency=0 multicast=yes wireless=ieee 802.11             resources: irq:18 memory:c6100000-c6107fff 

but after hibernate wlan seems disabled:

    *-pci:2          description: pci bridge          product: wildcat point-lp pci express root port #3          vendor: intel corporation          physical id: 1c.2          bus info: pci@0000:00:1c.2          version: e3          width: 32 bits          clock: 33mhz          capabilities: pci pciexpress msi pm normal_decode bus_master cap_list          configuration: driver=pcieport          resources: irq:44 memory:c6100000-c61fffff        *-network disabled             description: wireless interface             product: bcm43142 802.11b/g/n             vendor: broadcom limited             physical id: 0             bus info: pci@0000:08:00.0             logical name: wlo1             version: 01             serial: [removed]             width: 64 bits             clock: 33mhz             capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless             configuration: broadcast=yes driver=wl0 driverversion=6.30.223.248 (r487574) latency=0 multicast=yes wireless=ieee 802.11             resources: irq:18 memory:c6100000-c6107fff 

the network manager seems dead , wifi connections not respond. tried restart network manager using command line without success.

the problem has persisted 1.5 years , have had ubuntu versions 15.04 through 16.10. reinstalled 16.04. no luck. me out? thank you!