Re: networkmanager can not enable wireless scanning

[Larry Finger <Larry Finger lwfinger net>]

On 09/25/2013 09:28 PM, LovelyLich wrote:
> Hi list,
> When I click 'enable wireless', nm will automaticly uncheck the button
> before 'enable wireless'.
> Even if I try to boot with  ubuntu 13.04 livecd , it still cannot
> enable wireless.
> here is my laptop info from fedora:
> lspci -v
> 03:00.0 Network controller: Qualcomm Atheros AR9485 Wireless Network
> Adapter (rev 01)
>          Subsystem: Lite-On Communications Inc Device 6627
>          Flags: bus master, fast devsel, latency 0, IRQ 18
>          Memory at f7900000 (64-bit, non-prefetchable) [size=512K]
>          Expansion ROM at f7980000 [disabled] [size=64K]
>          Capabilities: [40] Power Management version 2
>          Capabilities: [50] MSI: Enable- Count=1/4 Maskable+ 64bit+
>          Capabilities: [70] Express Endpoint, MSI 00
>          Capabilities: [100] Advanced Error Reporting
>          Capabilities: [140] Virtual Channel
>          Capabilities: [160] Device Serial Number 00-00-00-00-00-00-00-00
>          Kernel driver in use: ath9k
>
> ethtool -i :
> [root localhost]/home/codedancer# ethtool -i wlp3s0
> driver: ath9k
> version: 3.9.5-301.fc19.x86_64
> firmware-version: N/A
> bus-info: 0000:03:00.0
> supports-statistics: yes
> supports-test: no
> supports-eeprom-access: no
> supports-register-dump: no
> supports-priv-flags: no
> [root localhost]/home/codedancer#
>
> Please help me , thanks .
> if you need more info, just let me know.

Two things that suppress wireless come to mind.

Does iwconfig show a wireless device? If not, you may be missing the necessary 
firmware. Check the output of dmesg to see if there are any messages regarding 
missing firmware.

Does "rfkill list" show anything blocked?

Larry