Wireless Fail in Ubuntu

Asked by Israel Lage on 2017-10-12

My Intel AC 3160 Dual-band wifi card works correctly but after 10 minutes the wifi card fails almost immediately. A reboot sometimes helps, but the card always fails, with "failed to wake NIC for hcmd" errors.

dmesg output:
iwlwifi 0000:02:00.0: Scan failed! ret -5
iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
iwlwifi 0000:02:00.0: Error sending SCAN_OFFLOAD_REQUEST_CMD: enqueue_hcmd failed: -5

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What is the output of:

sudo lshw -C network ; lsb_release -a ; uname -a


Jeremy (wa113y3s) said : #2

If you have 16.04 or newer, in terminal enter

sudo sed -i 's/wifi.powersave = 3/wifi.powersave = 2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf


Jeremy (wa113y3s) said : #3

That command is one line starting with sudo and ending with .conf

Israel Lage (israeljl17) said : #4

sudo lshw -C network ; lsb_release -a ; uname -a


       description: Wireless interface
       product: Wireless 3160
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:08:00.0
       logical name: wlo1
       version: 83
       serial: a0:88:69:ce:c1:3d
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.10.0-32-generic firmware=17.459231.0 ip= latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:45 memory:b5500000-b5501fff
       description: Ethernet interface
       product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:09:00.0
       logical name: eno1
       version: 08
       serial: 58:20:b1:0d:93:64
       size: 10Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-2_0.0.1 04/23/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:42 ioport:4000(size=256) memory:b5404000-b5404fff memory:b5400000-b5403fff
No LSB modules are available.
Distributor ID: elementary
Description: elementary OS 0.4.1 Loki
Release: 0.4.1
Codename: loki
Linux israeljl-linux 4.10.0-32-generic #36~16.04.1-Ubuntu SMP Wed Aug 9 09:19:02 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

Elementary OS is not supported by the Ubuntu community in any way. It's support and community are entirely separate from Ubuntu's

I suggest you post on the Elementary OS forum here:

None of the "Ubuntu based" distributions are supported here.

Israel Lage (israeljl17) said : #6

Thanks Jeremy, that solved my question.

Israel Lage (israeljl17) said : #7

OHH ocurred again : ( but after 1 hour this time

Have you rebooted your router?

Israel Lage (israeljl17) said : #9

The router? No..

Launchpad Janitor (janitor) said : #11

This question was expired because it remained in the 'Open' state without activity for the last 15 days.