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rated 0 times [  4] [ 0]  / answers: 1 / hits: 3711  / 1 Year ago, tue, february 14, 2023, 1:10:42

I installed 11.0`4 via wubi on my new Acer Aspire 7551G-7606. When I boot it up it cannot detect wifi. As a matter of fact, the "Enable Wifi" checkbox in the dropdown is disabled and when I enable it I cannot see any wifi networks even though they are there (I'm on one right now)

When I run through the System Testing app the first time "Detecting your network controller(s)" worked fine but "testing your connection to the internet" resulted in an error. Stepping back and then forward again and even restarting my system and re-running the system testing app results in "detecting your network controller" coming up empty.

I've installed via wubi several times including to a very similar Acer Aspire 7740-5691 and never had any problems whatsoever. Everything works great in windows, according to windows devices I have an atheros ar5b97.

As per the comment I ran lspci which reports
Network controller: Atheros Communications INc. AR9287 Wireless Network Adapter (PCI-Express) (rev 01)

sudo lshw -class network recognizes it as

 *-network DISABLED
description: Wireless interface
product: AR9287 Wireless Network Adapter (PCI-Express)
vendor: Atheros Communications INc.
physical id: 0
bus info: pci@0000:06:00.0
logical name: wlan0
version: 01
serial: the-number
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list enternet physical wireless
configureation: broadcast=yes driver=ath9k driverversion=2.6.38-8-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq: 17 memory:d0200000-d020ffff

rfkill list

0: acer-wireless: Wireless LAN
Soft blocked: yes
Hard blocked: no
1: phy0: Wirless LAN
Soft blocked: no
Hard blocked: no

What would my next step be in trying to fix this issue?

More From » wireless


Try blacklisting the acer-wmi kernel module:

sudo nano /etc/modprobe.d/blacklist.conf

add blacklist acer_wmi as a new line at the bottom of this file.

then reboot.


The acer-wmi kernel module enables you to control the following:

  • the wireless LAN card radio

  • inbuilt Bluetooth adapter

  • inbuilt 3G card

  • mail LED of your laptop

  • brightness of the LCD panel

With regards to wireless, all acer-wmi does is enable the radio on the card. It
is not responsible for the wireless LED - once the radio is enabled, this is
down to the wireless driver for your card.

However for some acer laptop models - there is a conflict between the Acer firmware and the kernel implementation. This is why you need to blacklist.


[#43832] Wednesday, February 15, 2023, 1 Year  [reply] [flag answer]
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