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Groups > linux.debian.user > #231594 > unrolled thread

how to set link/level in wifi configuration?

Started byLong Wind <longwind2@yahoo.com>
First post2021-02-10 23:50 +0100
Last post2021-02-12 21:00 +0100
Articles 6 on this page of 26 — 11 participants

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  how to set link/level in wifi configuration? Long Wind <longwind2@yahoo.com> - 2021-02-10 23:50 +0100
    Re: how to set link/level in wifi configuration? pioruns2020 <pioruns2020@gmx.com> - 2021-02-11 00:10 +0100
      Re: how to set link/level in wifi configuration? Long Wind <longwind2@yahoo.com> - 2021-02-11 02:50 +0100
        Re: how to set link/level in wifi configuration? Peter Ehlert <peter@sdi-baja.com> - 2021-02-11 03:40 +0100
          Re: how to set link/level in wifi configuration? Long Wind <longwind2@yahoo.com> - 2021-02-11 07:50 +0100
            Re: how to set link/level in wifi configuration? didier gaumet <didier.gaumet@gmail.com> - 2021-02-11 11:00 +0100
    Re: how to set link/level in wifi configuration? Anssi Saari <as@sci.fi> - 2021-02-11 10:00 +0100
      Re: how to set link/level in wifi configuration? Long Wind <longwind2@yahoo.com> - 2021-02-11 10:40 +0100
    Re: how to set link/level in wifi configuration? Andrei POPESCU <andreimpopescu@gmail.com> - 2021-02-11 10:40 +0100
      Re: how to set link/level in wifi configuration? Long Wind <longwind2@yahoo.com> - 2021-02-11 11:10 +0100
        Re: how to set link/level in wifi configuration? pioruns2020 <pioruns2020@gmx.com> - 2021-02-11 11:40 +0100
          Re: how to set link/level in wifi configuration? <tomas@tuxteam.de> - 2021-02-11 12:00 +0100
            Re: how to set link/level in wifi configuration? pioruns2019 <pioruns2019@gmx.com> - 2021-02-12 23:30 +0100
              Re: how to set link/level in wifi configuration? Long Wind <longwind2@yahoo.com> - 2021-02-13 02:20 +0100
                Re: how to set link/level in wifi configuration? Long Wind <longwind2@yahoo.com> - 2021-02-13 04:10 +0100
        Re: how to set link/level in wifi configuration? Greg Wooledge <wooledg@eeg.ccf.org> - 2021-02-11 13:40 +0100
    Re: how to set link/level in wifi configuration? David <bouncingcats@gmail.com> - 2021-02-11 11:30 +0100
      Re: how to set link/level in wifi configuration? Long Wind <longwind2@yahoo.com> - 2021-02-11 12:40 +0100
        Re: how to set link/level in wifi configuration? David <bouncingcats@gmail.com> - 2021-02-11 13:50 +0100
          Re: how to set link/level in wifi configuration? David <bouncingcats@gmail.com> - 2021-02-11 15:10 +0100
            Re: how to set link/level in wifi configuration? Long Wind <longwind2@yahoo.com> - 2021-02-11 18:40 +0100
              Re: how to set link/level in wifi configuration? David <bouncingcats@gmail.com> - 2021-02-11 22:30 +0100
                Re: how to set link/level in wifi configuration? David Wright <deblis@lionunicorn.co.uk> - 2021-02-12 00:30 +0100
    Re: how to set link/level in wifi configuration? Long Wind <longwind2@yahoo.com> - 2021-02-12 12:10 +0100
      Re: how to set link/level in wifi configuration? David <bouncingcats@gmail.com> - 2021-02-12 14:40 +0100
        Re: how to set link/level in wifi configuration? Long Wind <longwind2@yahoo.com> - 2021-02-12 21:00 +0100

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#231622

FromLong Wind <longwind2@yahoo.com>
Date2021-02-11 18:40 +0100
Message-ID<BHo6C-6eq-1@gated-at.bofh.it>
In reply to#231616

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 Thank David! but /etc/wpa_supplicant/wpa_supplicant.conf doesn't exist.i create it, it doesn't work, it uses freq 2412

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#231630

FromDavid <bouncingcats@gmail.com>
Date2021-02-11 22:30 +0100
Message-ID<BHrHc-8oE-1@gated-at.bofh.it>
In reply to#231622
On Fri, 12 Feb 2021 at 04:38, Long Wind <longwind2@yahoo.com> wrote:

> Thank David! but /etc/wpa_supplicant/wpa_supplicant.conf doesn't exist.

Ok. If /etc/wpa_supplicant/wpa_supplicant.conf doesn't exist, that means
that your computer is using a different program (than my computer does)
to control your WIFI interface.

You need to figure out what that is, and use whatever method it requires
to force the channel change to 2462 MHz.

I am sorry, I cannot help you with that, because I only have ever used
wpa_supplicant and it is the only method I know.

But maybe someone else here can help you, if you tell us what software
you are using in Debian and in Ubuntu to configure your network connection.

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#231631

FromDavid Wright <deblis@lionunicorn.co.uk>
Date2021-02-12 00:30 +0100
Message-ID<BHtzk-16b-7@gated-at.bofh.it>
In reply to#231630
On Fri 12 Feb 2021 at 08:21:52 (+1100), David wrote:
> On Fri, 12 Feb 2021 at 04:38, Long Wind <longwind2@yahoo.com> wrote:
> 
> > Thank David! but /etc/wpa_supplicant/wpa_supplicant.conf doesn't exist.
> 
> Ok. If /etc/wpa_supplicant/wpa_supplicant.conf doesn't exist, that means
> that your computer is using a different program (than my computer does)
> to control your WIFI interface.
> 
> You need to figure out what that is, and use whatever method it requires
> to force the channel change to 2462 MHz.
> 
> I am sorry, I cannot help you with that, because I only have ever used
> wpa_supplicant and it is the only method I know.
> 
> But maybe someone else here can help you, if you tell us what software
> you are using in Debian and in Ubuntu to configure your network connection.

For example, if you use wicd, the configurations will likely be in
/var/lib/wicd/configurations/<MAC> and look something like:

ap_scan=1
ctrl_interface=/var/run/wpa_supplicant
network={
       ssid="JHotel"
       scan_ssid=1
       proto=WPA RSN
       key_mgmt=WPA-PSK
       pairwise=CCMP TKIP
       group=CCMP TKIP
       psk=<a long string of hex>
}

Cheers,
David.

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#231637

FromLong Wind <longwind2@yahoo.com>
Date2021-02-12 12:10 +0100
Message-ID<BHEuL-7Kw-33@gated-at.bofh.it>
In reply to#231594

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i've solved on my own:
allow-hotplug  wlx502b73d50a69
iface  wlx502b73d50a69 inet dhcp
wireless-mode managed
wireless-essid JHotel

at first, 3rd line is missing, that's cause of troublelink/level is around 60 though it uses freq 2412 MHz
Thanks to all that reply!

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#231650

FromDavid <bouncingcats@gmail.com>
Date2021-02-12 14:40 +0100
Message-ID<BHGPU-Cy-15@gated-at.bofh.it>
In reply to#231637
On Fri, 12 Feb 2021 at 22:00, Long Wind <longwind2@yahoo.com> wrote:

> i've solved on my own:
>
> allow-hotplug  wlx502b73d50a69
> iface  wlx502b73d50a69 inet dhcp
> wireless-mode managed
> wireless-essid JHotel
>
> at first, 3rd line is missing, that's cause of trouble
> link/level is around 60 though it uses freq 2412 MHz

Happy Chinese New Year!

Unfortunately, your claimed solution has no effect.
If "3rd line" means this one:
  wireless-mode managed
then that changes nothing, as shown by the
information that you provided a couple of days
ago, see the [***] markers below ...

On Thu, 11 Feb 2021 at 22:37, Long Wind <longwind2@yahoo.com> wrote:
> output by ubuntu:
> zhou@zhou-Lenovo:~$ iw dev wlx502b73d50a69 info
> Interface wlx502b73d50a69
[...]
>         ssid JHotel
>         type managed     <<<<<------[***]

On Thu, 11 Feb 2021 at 22:37, Long Wind <longwind2@yahoo.com> wrote:
> output by debian:
> root@debian:~# iw dev wlx502b73d50a69 info
> Interface wlx502b73d50a69
[...]
>         ssid JHotel
>         type managed     <<<<<------[***]

Adding "managed" to your configuration has no effect
because "managed" is the default mode of the interface.
"Managed" just means "connect to an access point".
So you changed nothing.

The performance that you see at any particular time will be
affected by many factors:
- other users causing network congestion
- the channel signal level (absorption, multipath, antenna position)
- the channel noise level (other networks and interference)
which are likely not constant.
The "link/level" number tells you how good or bad things are, but
it is affected by so many different factors that it does not
provide reliable evidence for fixing problems.

You asked for help regarding the performance difference
between your Ubuntu and Debian system. We found good
evidence to explain it. Whether you act on that evidence
is up to you.

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#231661

FromLong Wind <longwind2@yahoo.com>
Date2021-02-12 21:00 +0100
Message-ID<BHMLE-4bP-9@gated-at.bofh.it>
In reply to#231650

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You are right. link/level is about 30 now.  adding 3rd line doesn't solve my problem.  buster installer uses 3rd line to set up network connection. it works fine then, now  link/level is low
i think wifi signals is stable, there are few guest/user at hotel now because of chinese new year. my  cell phone's wifi connection is ok 

i've changed disk, old disk has stretch and ubuntu, new disk has buster and fedora 25,  fedora use freq 2462 MHz too
my debian use ifup/ifdown to configure network, just edit /etc/network/interfaces. i'm considering using wpa_supplicant and have installed wpa_gui, it's not easy to use .

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