Re: iw dev wlp1s0 scan hangs

[Arend van Spriel <arend@broadcom.com>]

On 03/12/15 18:04, German wrote:
> On Thu, 12 Mar 2015 12:09:02 +0100
> Arend van Spriel<arend@broadcom.com>  wrote:
>
>> On 03/12/15 09:50, German wrote:
>>> On Thu, 12 Mar 2015 09:28:38 +0100
>>> Arend van Spriel<arend@broadcom.com>   wrote:
>>>
>>>> On 03/11/15 23:21, German wrote:
>>>>> On Wed, 11 Mar 2015 22:17:38 +0100
>>>>> Arend van Spriel<arend@broadcom.com>    wrote:
>>>>>
>>>>>> On 03/11/15 22:00, German wrote:
>>>>>>> On Wed, 11 Mar 2015 21:44:44 +0100
>>>>>>> Arend van Spriel<arend@broadcom.com>     wrote:
>>>>>>>
>>>>>>>> On 03/11/15 21:33, German wrote:
>>>>>>>>> On Wed, 11 Mar 2015 21:25:26 +0100
>>>>>>>>> Arend van Spriel<arend@broadcom.com>      wrote:
>>>>>>>>>
>>>>>>>>>> On 03/11/15 21:17, German wrote:
>>>>>>>>>>> Hi. When I try to run aformentioned command it hangs for about 20 secs and no output is returned. What's the problem might be? Thanks
>>>>>>>>>>
>>>>>>>>>> any more details you can share? What kernel version, what specific
>>>>>>>>>> device is wlp1s0, do you have any kernel logging.
>>>>>>>>>>
>>>>>>>>
>>>>>>>> When I wrote down the questions I was wondering how specifc I should be.
>>>>>>>>> Kernel 3.18.7-gentoo.
>>>>>>>>
>>>>>>>> ok
>>>>>>>>
>>>>>>>>> wlp1s0 is my network card.
>>>>>>>>
>>>>>>>> Sure. I meant what brand and model.
>>>>>>>>
>>>>>>>> Can you run following commands:
>>>>>>>> $ lspci
>>>>>>>> $ lsusb
>>>>>>>>
>>>>>>> realtek RTL8723BE PCIe Wireless Network Adapter
>>>>>>>
>>>>>>>>> As for kernel logging, I simply don't know if I have it. Thanks
>>>>>>>>
>>>>>>>> Ok. Can you run following command after aborting the hanging iw scan
>>>>>>>> command:
>>>>>>>>
>>>>>>>> $ dmesg
>>>>>>>
>>>>>>> Polling FW ready fail! Firmware is not ready to run.
>>>>>>>
>>>>>>> Ok, so I need some sort of firmware? That's what I thought. What is this and where can I find it in kernel when I compile it? Thanks
>>>>>>
>>>>>> Not familiar with Realtek equipment but it might be provided by the
>>>>>> linux-firmware package so:
>>>>>>
>>>>>> $ sudo emerge --ask linux-firmware
>>>>>>
>>>>>
>>>>> Thanks Arend. This did the trick. I can now scan networks and I found mine. But how I actually connect to my network? I guess it is encrypted, but I have wpa_supplicant installed.
>>>>
>>>> Gentoo does not seem to provide NetworkManager as a solution. I found
>>>> this page [1]. Maybe it helps.
>>>
>>> Thanks Arend for pointing me to this link. NetworkManager was proposed to me on gentoo mailing list as a way to control both wireless and wired interfaces. It pulled a bunch of dependencies, though I used -X flag in USE variable not to use X server. the compile took about an hour and after all this, my system became unstable. It doesn't at all feels right, it is clunky. For now I am building gentoo laptop in pure console mode, so from all my research, iw is the only CLI tool for wireless and I like the fact it doesn't need bunch of dependences. I already installed it and I like it, so would you be so kind to get me through a set up? Documentation seems confusing. Thanks
>>
>> Well. iw is really for testing/debugging. Especially with WPA/RSN
>> networks that do periodic rekeying you need wpa_supplicant. It will do
>> the scanning on its own and establish connection and such.
>>
>> You could also opt for using nmcli, but that might be what you tried
>> already.
>>
>> I am no gentoo expert, but let's try to get this working. I am following
>> the wpa_supplicant section of the link I send earlier.
>
> Are you advising not to use iw and go the wireless-tools package?

Nope. Those are only useful for unprotected networks or WEP (which is 
almost same as unprotected). The two options are wireless-tools or 
wpa_supplicant. See below.

>>
>> 1. modify /etc/conf.d/net
>>
>> Not sure if you only use wireless on the machine. Otherwise, you can
>> copy the attach conf.net file:
>>
>> $ sudo cp conf.net /etc/conf.d/net
>>
>> 2. install wpa_supplicant configuration
>>
>> Edit attached wpa_supplicant.conf with your ssid and psk and copy it:
>>
>> $ sudo cp wpa_supplicant.conf /etc/wpa_supplicant
>>
>> 3. restart networking
>>
>> $ sudo /etc/init.d/net restart
>>
>> Not sure if step 3. is entirely correct regarding the script name. I
>> don't use Gentoo.
>>
>> Regards,
>> Arend
>>>> Regards,
>>>> Arend
>>>>
>>>> [1]
>>>> http://wiki.gentoo.org/wiki/Handbook:Parts/Networking/Wireless#Wireless_tools
>>>>
>>>>>> Regards,
>>>>>> Arend
>>>>>>
>>>>>>>>
>>>>>>>> Regards,
>>>>>>>> Arend
>>>>>>>>
>>>>>>>>>> Regards,
>>>>>>>>>> Arend
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
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