All wlans except my own found

Kernels & Hardware, configuring network, installing services

All wlans except my own found

Postby Onsemeliot » 2017-08-05 12:16

I have an Asus EeePC 1015px which originally ran Ubuntu 16.04, but since hardware performance is limited and the wireless was never really reliable I decided to go for something newer and with a possibly lighter footprint.

At the moment I have Debian with XFCE installed. So far the system seems to work fine. I only have odd issues with my wireless. On at least 4 different systems (2 Debian, 1 Ubuntu 17.04 and 1 Windows 10) the same wlan access point gets recognized like all others and can be used reliably.

I don't understand what the issue could be. I attach some diagnostic outputs. Maybe the output triggers ideas for solving the problem in your heads:

Code: Select all
Linux 1015px 4.9.0-3-686 #1 SMP Debian 4.9.30-2+deb9u2 (2017-06-26) i686 GNU/Linux
01:00.0 Ethernet controller [0200]: Qualcomm Atheros AR8152 v2.0 Fast Ethernet [1969:2062] (rev c1)
   Subsystem: ASUSTeK Computer Inc. AR8152 v2.0 Fast Ethernet [1043:8468]
   Kernel driver in use: atl1c
   Kernel modules: atl1c
02:00.0 Network controller [0280]: Broadcom Limited BCM4313 802.11bgn Wireless Network Adapter [14e4:4727] (rev 01)
   Subsystem: AzureWave BCM4313 802.11bgn Wireless Network Adapter [1a3b:2047]
   Kernel driver in use: wl
   Kernel modules: bcma, wl
Bus 004 Device 002: ID 13d3:5702 IMC Networks UVC VGA Webcam
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback
127.0.0.1   localhost
127.0.1.1   1015px.vegan.net   1015px

# The following lines are desirable for IPv6 capable hosts
::1     localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
wlp2s0    IEEE 802.11  ESSID:off/any 
          Mode:Managed  Access Point: Not-Associated   Tx-Power=200 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
         
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
[main]
plugins=ifupdown,keyfile

wlp2s0    32 channels in total; available frequencies :
          Channel 01 : 2.412 GHz
          Channel 02 : 2.417 GHz
          Channel 03 : 2.422 GHz
          Channel 04 : 2.427 GHz
          Channel 05 : 2.432 GHz
          Channel 06 : 2.437 GHz
          Channel 07 : 2.442 GHz
          Channel 08 : 2.447 GHz
          Channel 09 : 2.452 GHz
          Channel 10 : 2.457 GHz
          Channel 11 : 2.462 GHz
          Channel 12 : 2.467 GHz
          Channel 13 : 2.472 GHz
          Channel 14 : 2.484 GHz
          Channel 36 : 5.18 GHz
          Channel 38 : 5.19 GHz
          Channel 40 : 5.2 GHz
          Channel 42 : 5.21 GHz
          Channel 44 : 5.22 GHz
          Channel 46 : 5.23 GHz
          Channel 48 : 5.24 GHz
          Channel 52 : 5.26 GHz
          Channel 56 : 5.28 GHz
          Channel 60 : 5.3 GHz
          Channel 64 : 5.32 GHz
          Channel 100 : 5.5 GHz
          Channel 104 : 5.52 GHz
          Channel 108 : 5.54 GHz
          Channel 112 : 5.56 GHz
          Channel 116 : 5.58 GHz
          Channel 120 : 5.6 GHz
          Channel 124 : 5.62 GHz
Last edited by Onsemeliot on 2017-08-06 06:59, edited 2 times in total.
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Re: All wlans except my own found

Postby Bulkley » 2017-08-05 14:45

The most common reason is lack of non-free firmware for your particular wireless hardware. Wifi problems are the most common posts on this forum. Do some searching here.
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Re: All wlans except my own found

Postby wizard10000 » 2017-08-05 15:03

Bulkley wrote:The most common reason is lack of non-free firmware for your particular wireless hardware. Wifi problems are the most common posts on this forum. Do some searching here.


The weirdness is OP says he can connect to access points other than his own. That's why I deleted my post suggesting he pitch that Broadcom card :mrgreen:
we see things not as they are, but as we are.
-- anais nin
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Re: All wlans except my own found

Postby Bulkley » 2017-08-05 15:13

wizard10000, you are probably right but I still don't read the OP's post as you do.

Onsemeliot, what are the results of
Code: Select all
ifconfig
iwlist wlan0 scan
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Re: All wlans except my own found

Postby Onsemeliot » 2017-08-05 16:45

Ah - oh bugger, this is embarrassing! I just realised that wireless was disabled via the second function key. I didn't try to search for it before since I actually did see the network-list. After enabling the network I can connect to my own network also.

Sorry for bothering you without necessity. I must have hit the disabling key by accident when I tried to do something else ... probably in the dark. And unfortunately the netbook has no indication light or something similar.
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Re: All wlans except my own found

Postby wizard10000 » 2017-08-05 16:57

Bulkley wrote:wizard10000, you are probably right but I still don't read the OP's post as you do.


Yeah - I picked it from the subject line. Looks like OP resolved the issue anyway :)

OP - everybody has to do a :facepalm: once in awhile. Don't worry about it.
we see things not as they are, but as we are.
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Re: [solved] All wlans except my own found

Postby Bulkley » 2017-08-05 17:12

Yeah, I buried my head in the code and forgot the heading. Oops.
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Re: All wlans except my own found

Postby dasein » 2017-08-05 22:16

wizard10000 wrote:The weirdness is OP says he can connect to access points other than his own.

Which begs the question of how exactly he connected to those other APs if his WiFi transceiver was turned off. :-?
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Re: All wlans except my own found

Postby Onsemeliot » 2017-08-06 07:10

Puh, I have to admit I made an other error. Yesterday I didn't do a thorough testing. When I switched on the netbook today I did end up with the same problem I had before. I don't know why yesterday it suddenly worked. Today I for sure can't connect to any wireless network again. This time I did test it with an open wireless which should work but I can't even connect to this network even if it does show up in the list. And again my own network doesn't even show up.

I'm connected to the network via ethernet at the moment.

I do however get the following unsatisfying output:

Code: Select all
# ifconfig
bash: ifconfig: command not found

#iwlist wlan0 scan
wlan0     Interface doesn't support scanning.

This seems odd to me. So far I never had a system where ifconfig wasn't available. Has this something to do with XFCE?

Well, after installing net-tools I do get a better output:

Code: Select all
# ifconfig
enp1s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.11.103  netmask 255.255.255.0  broadcast 192.168.11.255
        inet6 fe80::f66d:4ff:feb4:2002  prefixlen 64  scopeid 0x20<link>
        ether f4:6d:04:b4:20:02  txqueuelen 1000  (Ethernet)
        RX packets 6257  bytes 6141867 (5.8 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 4694  bytes 547768 (534.9 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 1  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1  (Local Loopback)
        RX packets 11020  bytes 887772 (866.9 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 11020  bytes 887772 (866.9 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlp2s0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether 6a:8f:e7:9c:11:65  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 1654
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 17  base 0xc000

But iwlist still doesn't work.
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Re: All wlans except my own found

Postby Thorny » 2017-08-06 10:13

Onsemeliot wrote:This seems odd to me. So far I never had a system where ifconfig wasn't available. Has this something to do with XFCE?

Presumably you have stretch installed. In Chapter 5, Issues to be aware of for stretch of the, Release Notes for Stretch, Section 5.3.9.

" The net-tools package is no longer part of new installations by default, ... '', and it goes on to explain more.

https://www.debian.org/releases/stable/ ... ase-notes/
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Re: All wlans except my own found

Postby Onsemeliot » 2017-08-06 11:12

Thorny wrote:The net-tools package is no longer part of new installations by default, ...

Thank you for pointing this out for me.

With the new command (and unplugged ethernet) I get the fllowing result:
Code: Select all
$ ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: enp1s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether f4:6d:04:b4:20:02 brd ff:ff:ff:ff:ff:ff
    inet 192.168.11.103/24 brd 192.168.11.255 scope global dynamic enp1s0
       valid_lft 86181sec preferred_lft 86181sec
    inet6 fe80::f66d:4ff:feb4:2002/64 scope link
       valid_lft forever preferred_lft forever
3: wlp2s0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state DORMANT group default qlen 1000
    link/ether 7a:e4:f0:aa:51:75 brd ff:ff:ff:ff:ff:ff

An other thing is by the way that the speaker sound doesn't work. I can use the headphones but unfortunately even alsactl restart doesn't restore the speaker sound.
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Re: All wlans except my own found

Postby dasein » 2017-08-06 12:59

The "one problem, one thread" rule exists for a very good reason.
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Re: All wlans except my own found

Postby Onsemeliot » 2017-08-07 05:13

Well, I did just mention it. You can as well ignore the additional problem. But it might be relevant to me in this case also since the second problem probably wouldn't appear in Xubuntu. Maybe I should give it a try after all. Even if this doesn't help during installation it might still be the case that later on Xubuntu would be capable of dealing with the wireless hardware of the Eee PC since this hardware was communicated as one officially supported by Ubuntu. I thought that accepting the proprietary sources in Debian for this device would end up loading the same configuration but maybe I'm wrong.
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