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where to find wifi card info in linux-doc

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  where to find wifi card info in linux-doc lou <loushanguan2015@sina.com> - 2021-11-25 06:30 +0100
    Re: where to find wifi card info in linux-doc lou <loushanguan2015@sina.com> - 2021-11-26 02:10 +0100
      Re: where to find wifi card info in linux-doc deloptes <emanoil.kotsev@deloptes.org> - 2021-11-26 10:00 +0100
        Re: where to find wifi card info in linux-doc Christian Britz <cbritz@t-online.de> - 2021-11-26 11:10 +0100
          Re: where to find wifi card info in linux-doc deloptes <emanoil.kotsev@deloptes.org> - 2021-11-26 13:40 +0100
          Re: where to find wifi card info in linux-doc Stefan Monnier <monnier@iro.umontreal.ca> - 2021-11-26 15:00 +0100
            Re: where to find wifi card info in linux-doc Christian Britz <cbritz@t-online.de> - 2021-11-26 17:10 +0100
              Re: where to find wifi card info in linux-doc Christian Britz <cbritz@t-online.de> - 2021-11-26 17:30 +0100
                Re: where to find wifi card info in linux-doc lou <loushanguan2015@sina.com> - 2021-11-27 03:20 +0100
                  Re: where to find wifi card info in linux-doc David Wright <deblis@lionunicorn.co.uk> - 2021-11-28 20:00 +0100
                Re: where to find wifi card info in linux-doc lou <loushanguan2015@sina.com> - 2021-11-29 03:50 +0100
                  Re: where to find wifi card info in linux-doc David Wright <deblis@lionunicorn.co.uk> - 2021-11-29 06:00 +0100
                Re: where to find wifi card info in linux-doc lou <loushanguan2015@sina.com> - 2021-11-29 08:00 +0100
                  Re: where to find wifi card info in linux-doc David Wright <deblis@lionunicorn.co.uk> - 2021-11-30 05:50 +0100
              Re: where to find wifi card info in linux-doc David Wright <deblis@lionunicorn.co.uk> - 2021-11-29 06:00 +0100
    Re: where to find wifi card info in linux-doc Thomas Pircher <thp.debian@p5r.uk> - 2021-11-26 10:20 +0100

#242386 — where to find wifi card info in linux-doc

i've installed linux-doc for bullseye

  i browse /usr/share/doc/linux-doc, but can't find info about wifi card

i want info about wifi cards supported by kernel

Thanks!

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#242406

sorry, i use wrong word

i mean wifi adapter, not wifi card

in Chinese, it's called wireless card, though it's really USB wifi adapter

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#242410

lou wrote:

> sorry, i use wrong word
> 
> i mean wifi adapter, not wifi card
> 
> in Chinese, it's called wireless card, though it's really USB wifi adapter

I think you are looking for usb/WUSB-Design-overview.txt which I found with

grep -r -i wireless usb/

otherwise

grep -r -i wireless .

points to different aspects ABI, Netowrking, USB drivers etc.


-- 
FCD6 3719 0FFB F1BF 38EA 4727 5348 5F1F DCFE BCB0

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#242412

On 26.11.21 at 09:56 deloptes wrote:
> lou wrote:
> 
>> sorry, i use wrong word
>>
>> i mean wifi adapter, not wifi card
>>
>> in Chinese, it's called wireless card, though it's really USB wifi adapter
> 
> I think you are looking for usb/WUSB-Design-overview.txt which I found with
> 
> grep -r -i wireless usb/

How did you do this exactly? I installed package linux-dox like lou and
issued grep -i -r wireless /usr/share/doc/linux-doc/Documentation/ ,
without any results.

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#242415

Christian Britz wrote:


>> I think you are looking for usb/WUSB-Design-overview.txt which I found
>> with
>> 
>> grep -r -i wireless usb/
> 
> How did you do this exactly? I installed package linux-dox like lou and
> issued grep -i -r wireless /usr/share/doc/linux-doc/Documentation/ ,
> without any results.

It is always better to use the original source
cd linux-4.19.190/Documentation
grep -r -i wireless .

sorry for not mentioning that and I wonder how it is possible that the
Documentation directory has different content
and notice -i wireless (means ignore case for wireless) , while -r is to do
recursive grep

-- 
FCD6 3719 0FFB F1BF 38EA 4727 5348 5F1F DCFE BCB0

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#242417

Christian Britz [2021-11-26 11:05:35] wrote:
> How did you do this exactly? I installed package linux-dox like lou and
> issued grep -i -r wireless /usr/share/doc/linux-doc/Documentation/ ,
> without any results.

AFAICT most of the files in `linux-doc/Documentation`  are compressed,
so you'd need to use `zgrep`.


        Stefan

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#242418

(Sorry for replying to the personal adress first...)

Stefan Monnier wrote:

> AFAICT most of the files in `linux-doc/Documentation`  are compressed,
> so you'd need to use `zgrep`.

This actually works recursively with the zgrep command from the zutils
package, thank you!

The installation of it throws interesting warnings on testing...

[...]
dpkg-divert: warning: diverting file '/bin/zgrep' from an Essential
package with rename is dangerous, use --no-rename
dpkg-divert: warning: diverting file '/usr/share/man/man1/zgrep.1.gz'
from an Essential package with rename is dangerous, use --no-rename
[...]

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#242419

Christian Britz wrote:
> This actually works recursively with the zgrep command from the zutils
> package, thank you!

And still it doesn't find the file mentioned by deloptes, amazing! :-D

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#242436

[Multipart message — attachments visible in raw view] — view raw

On 11/26/21 11:08 AM, Christian Britz wrote:
> Christian Britz wrote:
>> This actually works recursively with the zgrep command from the zutils
>> package, thank you!
> And still it doesn't find the file mentioned by deloptes, amazing! :-D
>
>

Thanks to all that reply!

WUSB-Design-overview.txt is available in linux doc 4.9, not in 5.10

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#242481

On Fri 26 Nov 2021 at 21:12:25 (-0500), lou wrote:
> 
> On 11/26/21 11:08 AM, Christian Britz wrote:
> > Christian Britz wrote:
> > > This actually works recursively with the zgrep command from the zutils
> > > package, thank you!
> > And still it doesn't find the file mentioned by deloptes, amazing! :-D
> 
> Thanks to all that reply!
> 
> WUSB-Design-overview.txt is available in linux doc 4.9, not in 5.10

If it /were/ available, is that what you're after (judging from the
contents of 4.9)? Your original question was about wifi cards, then
corrected to adapters. Generally, the kernel docs deal with chipsets,
and are fairly uninterested in which hardware they are embedded.

This can be frustrating when you want to purchase a suitable device,
as even the same model name (on the box) can have different chipsets
inside from one instance to another, particularly with cheap ones.

So it might help to clarify from which viewpoint you seek the info,
and any particular cards/adapters/chipsets involved.

Cheers,
David.

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#242501

Thank David!

i want info about wifi adapters supported by kernel without using 
non-free firmware.

i haven't been able to find such info in linux-doc

yes, search for such info isn't easy, i give up

many web pages have stories of linux users' success with wifi adapter

but they might use non-free firmware

BTW both opensuse and fedora include non-free firmware in their official 
images

they r so serious about open source that they don't include mp3 player 
(you have to use 3rd party repositories)

i think debian shall re-consider its policy on non-free firmware

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#242504

On Sun 28 Nov 2021 at 21:43:04 (-0500), lou wrote:
> Thank David!
> 
> i want info about wifi adapters supported by kernel without using
> non-free firmware.
> 
> i haven't been able to find such info in linux-doc
> 
> yes, search for such info isn't easy, i give up
> 
> many web pages have stories of linux users' success with wifi adapter
> but they might use non-free firmware

On Debian, perhaps start at
https://wiki.debian.org/WiFi

You might also look at the Guix website as I don't think they
support non-free firmware at all.

> BTW both opensuse and fedora include non-free firmware in their
> official images
> 
> they r so serious about open source that they don't include mp3 player
> (you have to use 3rd party repositories)
> 
> i think debian shall re-consider its policy on non-free firmware

You brought this up in October. Please reread the thread.

Cheers,
David.

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#242509

Thank David, you have better memory than i

my memory is poor because of insomnia

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#242534

On Mon 29 Nov 2021 at 01:50:24 (-0500), lou wrote:
> 
> Thank David, you have better memory than i
> 
> my memory is poor because of insomnia

Extracted from the Guix Reference Manual:

§ 3.2 Hardware Considerations

GNU Guix focuses on respecting the user’s computing freedom. It builds
around the kernel Linux-libre, which means that only hardware for
which free software drivers and firmware exist is supported. Nowadays,
a wide range of off-the-shelf hardware is supported on
GNU/Linux-libre—from keyboards to graphics cards to scanners and
Ethernet controllers.  Unfortunately, there are still areas where
hardware vendors deny users control over their own computing, and such
hardware is not supported on Guix System.

   One of the main areas where free drivers or firmware are lacking is
WiFi devices. WiFi devices known to work include those using Atheros
chips (AR9271 and AR7010), which corresponds to the ath9k Linux-libre
driver, and those using Broadcom/AirForce chips (BCM43xx with
Wireless-Core Revision 5), which corresponds to the b43-open
Linux-libre driver. Free firmware exists for both and is available
out-of-the-box on Guix System, as part of %base-firmware (see Section
10.2 [operating-system Reference], page 193).

   The Free Software Foundation (https://www.fsf.org/) runs Respects
Your Freedom (https://www.fsf.org/ryf) (RYF), a certification
program for hardware products that respect your freedom and your
privacy and ensure that you have control over your device. We
encourage you to check the list of RYF-certified devices.

   Another useful resource is the H-Node (https://www.h-node.org/)
web site. It contains a catalog of hardware devices with information
about their support in GNU/Linux.

Cheers,
David.

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#242506

On Fri 26 Nov 2021 at 17:03:37 (+0100), Christian Britz wrote:
> Stefan Monnier wrote:
> 
> > AFAICT most of the files in `linux-doc/Documentation`  are compressed,
> > so you'd need to use `zgrep`.
> 
> This actually works recursively with the zgrep command from the zutils
> package, thank you!
> 
> The installation of it throws interesting warnings on testing...
> 
> [...]
> dpkg-divert: warning: diverting file '/bin/zgrep' from an Essential
> package with rename is dangerous, use --no-rename
> dpkg-divert: warning: diverting file '/usr/share/man/man1/zgrep.1.gz'
> from an Essential package with rename is dangerous, use --no-rename
> [...]

You see this merely because a file like /bin/zgrep is essential, but
it's going to be renamed to /bin/zgrep.gzip so that the zutils version
can replace it. Without the diversion, zutils would violate the rule
that the same file can't be installed from more than one package.

It's exceptional enough for you to be warned that it's happening,
but particularly because the default behaviour will be changing
at some point. Anyway, it's expected behaviour.

Cheers,
David.

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#242411

lou wrote:
>i want info about wifi cards supported by kernel

The kernel wiki has a good list of supported chips:
https://wireless.wiki.kernel.org/en/users/drivers

Thomas

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