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Realtek RTL8723DE, RTL8821CE, RTL8822BE and RTL8822CE chipsets
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Timothy M Butterworth
Mar 29, 2021, 9:00:03 PM3/29/21
to
All,
Currently in Bullseye the Realtek 8822CE WiFi adapter is not being
recognized. There is a patched driver available at: git clone
https://github.com/lwfinger/rtw88.git is it too late to get this
driver into Bullseye. I ask because I have a laptop with a 8822CE
adapter that is not functional.
More info on getting Realtek adapters working:
https://easylinuxtipsproject.blogspot.com/p/realtek.html#ID7
Tim
Currently in Bullseye the Realtek 8822CE WiFi adapter is not being
recognized. There is a patched driver available at: git clone
https://github.com/lwfinger/rtw88.git is it too late to get this
driver into Bullseye. I ask because I have a laptop with a 8822CE
adapter that is not functional.
More info on getting Realtek adapters working:
https://easylinuxtipsproject.blogspot.com/p/realtek.html#ID7
Tim
Devops PK Carlisle LLC
Mar 30, 2021, 1:10:03 PM3/30/21
to
I will note something similar, except that I went into it with my eyes
open...
Originally (10 years ago), 2.4ghz wifi was not natively supported. Okay,
said we geeks, can it be compiled and inserted manually? Yes, it could.
I wrote a script to compile and insert said driver, and thereafter,
every time there was a kernel update or patch, that's what I did. And it
worked fine for the couple of years it took for 2.4ghz to be natively
supported in Linux.
Fast forward to 2 months ago. Looking at 5ghz wifi, I *knew* what I was
volunteering for when I saw a 5ghz wifi dongle on Amazon (one of the
questions was: Is it supported for Linux? *I* snickered, as I has a very
good idea what the implications were).
I bought one, and, back to old school, I can and do run it, manually
compiling and inserting the driver as needed. It's a very familiar process.
Here's a real world application: in fact I bought *two* 5ghz dongles,
one for myself, one for an *extreme* end user whose system I administer.
On my system, as needed, compile and reinsert driver. On her system, I
pulled the 5ghz, went back to the 2.4ghz dongle, trusting that she won't
see the difference.
No big deal, not a complaint, I am PERFECTLY comfortable with compiling
and inserting a driver (compare and contrast that to Windows, where you
are SOL if there is not a driver available, I *do* get it)...more a
point in the right direction. This is where we were 10 years ago with
2.4ghz.
open...
Originally (10 years ago), 2.4ghz wifi was not natively supported. Okay,
said we geeks, can it be compiled and inserted manually? Yes, it could.
I wrote a script to compile and insert said driver, and thereafter,
every time there was a kernel update or patch, that's what I did. And it
worked fine for the couple of years it took for 2.4ghz to be natively
supported in Linux.
Fast forward to 2 months ago. Looking at 5ghz wifi, I *knew* what I was
volunteering for when I saw a 5ghz wifi dongle on Amazon (one of the
questions was: Is it supported for Linux? *I* snickered, as I has a very
good idea what the implications were).
I bought one, and, back to old school, I can and do run it, manually
compiling and inserting the driver as needed. It's a very familiar process.
Here's a real world application: in fact I bought *two* 5ghz dongles,
one for myself, one for an *extreme* end user whose system I administer.
On my system, as needed, compile and reinsert driver. On her system, I
pulled the 5ghz, went back to the 2.4ghz dongle, trusting that she won't
see the difference.
No big deal, not a complaint, I am PERFECTLY comfortable with compiling
and inserting a driver (compare and contrast that to Windows, where you
are SOL if there is not a driver available, I *do* get it)...more a
point in the right direction. This is where we were 10 years ago with
2.4ghz.
Andrey Rahmatullin
Mar 30, 2021, 1:30:03 PM3/30/21
to
On Tue, Mar 30, 2021 at 12:35:22PM -0400, Devops PK Carlisle LLC wrote:
> No big deal, not a complaint, I am PERFECTLY comfortable with compiling
> and inserting a driver (compare and contrast that to Windows, where you
> are SOL if there is not a driver available, I *do* get it)...more a
> point in the right direction. This is where we were 10 years ago with
> 2.4ghz.
Not sure what hardware you are talking about but the majority of WiFI
> No big deal, not a complaint, I am PERFECTLY comfortable with compiling
> and inserting a driver (compare and contrast that to Windows, where you
> are SOL if there is not a driver available, I *do* get it)...more a
> point in the right direction. This is where we were 10 years ago with
> 2.4ghz.
hardware is supported by the mainline kernels, at least after you load
their firmware.
--
WBR, wRAR
Michael Stone
Mar 31, 2021, 10:50:03 PM3/31/21
to
On Tue, Mar 30, 2021 at 10:20:03PM +0500, Andrey Rahmatullin wrote:
>Not sure what hardware you are talking about but the majority of WiFI
>hardware is supported by the mainline kernels, at least after you load
>their firmware.
I assume you haven't tried very much wifi hardware. Realistically, the
>Not sure what hardware you are talking about but the majority of WiFI
>hardware is supported by the mainline kernels, at least after you load
>their firmware.
state of wifi support is still terrible. The best thing to do is try to
buy something known to be supported, but that's relatively difficult for
most people because the name on the box generally has nothing to do with
the chips inside the box.
Paul Sutton
Apr 1, 2021, 4:00:03 AM4/1/21
to
this is fine if the device is pretty much flush or perhaps only 5mm out
from the side, anything bigger risks it being caught or knocked, which
will not only cause damage to the dongle but also the laptop it's self,
In that light our choices are perhaps more limite
Paul
--
--
Paul Sutton, Cert Cont Sci (Open)
https://personaljournal.ca/paulsutton/
OpenPGP : 4350 91C4 C8FB 681B 23A6 7944 8EA9 1B51 E27E 3D99
Pronoun : him/his/he
Andrey Rahmatullin
Apr 1, 2021, 4:00:03 AM4/1/21
to
On Thu, Apr 01, 2021 at 08:51:08AM +0100, Paul Sutton wrote:
> > > > Not sure what hardware you are talking about but the majority of WiFI
> > > > hardware is supported by the mainline kernels, at least after you load
> > > > their firmware.
> > >
> > > I assume you haven't tried very much wifi hardware. Realistically,
> > > the
> state
> > > of wifi support is still terrible. The best thing to do is try to buy
> > > something known to be supported, but that's relatively difficult for most
> > > people because the name on the box generally has nothing to do with the
> > > chips inside the box.
> > Can you please list some unsupported chips in addition to these specific
> > Realtek ones?
> >
>
> It has been suggested to me to buy the external USB wifi dongles
This doesn't sound related to my question.
> > > > Not sure what hardware you are talking about but the majority of WiFI
> > > > hardware is supported by the mainline kernels, at least after you load
> > > > their firmware.
> > >
> > > I assume you haven't tried very much wifi hardware. Realistically,
> > > the
> state
> > > of wifi support is still terrible. The best thing to do is try to buy
> > > something known to be supported, but that's relatively difficult for most
> > > people because the name on the box generally has nothing to do with the
> > > chips inside the box.
> > Can you please list some unsupported chips in addition to these specific
> > Realtek ones?
> >
>
> It has been suggested to me to buy the external USB wifi dongles
--
WBR, wRAR
Devops PK Carlisle LLC
Apr 1, 2021, 3:50:03 PM4/1/21
to
Something I did not mention before, to answer your question the chip
reads as rtl8821cu (so yes, a Realtek).
In fairness I do not recall ever having run across a wifi dongle that
did not have a Realtek chip (although they may be out there). It was
because I could at least confirm a Realtek chip in an otherwise cheap
Chinese dongle, that I was willing to even try it.
reads as rtl8821cu (so yes, a Realtek).
In fairness I do not recall ever having run across a wifi dongle that
did not have a Realtek chip (although they may be out there). It was
because I could at least confirm a Realtek chip in an otherwise cheap
Chinese dongle, that I was willing to even try it.
Andrey Rahmatullin
Apr 3, 2021, 8:50:03 AM4/3/21
to
On Sat, Apr 03, 2021 at 02:40:39PM +0200, Dominique Dumont wrote:
> > Can you please list some unsupported chips in addition to these specific
> > Realtek ones?
>
> My daughter's laptop (an HP pavilion) has a RTL8821CE wifi chip which is not
> > Can you please list some unsupported chips in addition to these specific
> > Realtek ones?
>
> supported.
That one is in the subject.
--
WBR, wRAR
Dominique Dumont
Apr 3, 2021, 8:50:03 AM4/3/21
to
On Thursday, 1 April 2021 08:52:46 CEST Andrey Rahmatullin wrote:
> Can you please list some unsupported chips in addition to these specific
> Realtek ones?
> Can you please list some unsupported chips in addition to these specific
> Realtek ones?
My daughter's laptop (an HP pavilion) has a RTL8821CE wifi chip which is not
supported.
All the best
supported.
Michael Stone
Apr 3, 2021, 10:40:02 AM4/3/21
to
know work.
Andrey Rahmatullin
Apr 3, 2021, 11:10:03 AM4/3/21
to
On Sat, Apr 03, 2021 at 10:37:37AM -0400, Michael Stone wrote:
> > > > Not sure what hardware you are talking about but the majority of WiFI
> > > > hardware is supported by the mainline kernels, at least after you load
> > > > their firmware.
> > >
> > > I assume you haven't tried very much wifi hardware. Realistically, the state
> > > of wifi support is still terrible. The best thing to do is try to buy
> > > something known to be supported, but that's relatively difficult for most
> > > people because the name on the box generally has nothing to do with the
> > > chips inside the box.
> > Can you please list some unsupported chips in addition to these specific
> > Realtek ones?
>
> It would be easier for you to list ones that you've actually tested and know
> work.
OK, whatever.
> > > > Not sure what hardware you are talking about but the majority of WiFI
> > > > hardware is supported by the mainline kernels, at least after you load
> > > > their firmware.
> > >
> > > I assume you haven't tried very much wifi hardware. Realistically, the state
> > > of wifi support is still terrible. The best thing to do is try to buy
> > > something known to be supported, but that's relatively difficult for most
> > > people because the name on the box generally has nothing to do with the
> > > chips inside the box.
> > Can you please list some unsupported chips in addition to these specific
> > Realtek ones?
>
> It would be easier for you to list ones that you've actually tested and know
> work.
--
WBR, wRAR
Andrej Shadura
Apr 4, 2021, 5:30:02 AM4/4/21
to
On Sun, 4 Apr 2021, at 11:25, Andrej Shadura wrote:
> On Thu, 1 Apr 2021, at 21:22, Devops PK Carlisle LLC wrote:
> > Something I did not mention before, to answer your question the chip
> > reads as rtl8821cu (so yes, a Realtek).
> >
> > In fairness I do not recall ever having run across a wifi dongle that
> > did not have a Realtek chip (although they may be out there). It was
> > because I could at least confirm a Realtek chip in an otherwise cheap
> > Chinese dongle, that I was willing to even try it.
>
> I may be lucky or picky or whatever, but all except just one of my
> > Something I did not mention before, to answer your question the chip
> > reads as rtl8821cu (so yes, a Realtek).
> >
> > In fairness I do not recall ever having run across a wifi dongle that
> > did not have a Realtek chip (although they may be out there). It was
> > because I could at least confirm a Realtek chip in an otherwise cheap
> > Chinese dongle, that I was willing to even try it.
>
> external USB dongles have Atheros chips.
Oh, and another one has a Ralink chip.
--
Cheers,
Andrej
Andrej Shadura
Apr 4, 2021, 5:30:03 AM4/4/21
to
Hi,
On Thu, 1 Apr 2021, at 21:22, Devops PK Carlisle LLC wrote:
> Something I did not mention before, to answer your question the chip
> reads as rtl8821cu (so yes, a Realtek).
>
> In fairness I do not recall ever having run across a wifi dongle that
> did not have a Realtek chip (although they may be out there). It was
> because I could at least confirm a Realtek chip in an otherwise cheap
> Chinese dongle, that I was willing to even try it.
Cheers,
Andrej
On Thu, 1 Apr 2021, at 21:22, Devops PK Carlisle LLC wrote:
> Something I did not mention before, to answer your question the chip
> reads as rtl8821cu (so yes, a Realtek).
>
> In fairness I do not recall ever having run across a wifi dongle that
> did not have a Realtek chip (although they may be out there). It was
> because I could at least confirm a Realtek chip in an otherwise cheap
> Chinese dongle, that I was willing to even try it.
I may be lucky or picky or whatever, but all except just one of my external USB dongles have Atheros chips.
--
Cheers,
Andrej
Devops PK Carlisle LLC
Apr 4, 2021, 6:30:03 AM4/4/21
to
This is interesting.
First, I must ask... Are either Ralink or Atheros more quickly adopted
into Linux support before Realtek? Are they more stable, etc.? (In my
original post, I noted that I pulled a Realtek based 5ghz dongle from an
extreme end user system, in no small part due to stability/reliability)?
Second, I must note that perhaps you *were* lucky or whatever, as I have
never found anything other than a Realtek chipset on offer. Even if
Atheros or Ralink are more stable, I don't know if I could actually
*find* one. I am well aware that the Chinese company's dongle made in
People's Dongle Factory Thirteen will have folded before the container
ship hits the States, but the Realtek chipset is the key...it is finally
why I know that can work with it.
First, I must ask... Are either Ralink or Atheros more quickly adopted
into Linux support before Realtek? Are they more stable, etc.? (In my
original post, I noted that I pulled a Realtek based 5ghz dongle from an
extreme end user system, in no small part due to stability/reliability)?
Second, I must note that perhaps you *were* lucky or whatever, as I have
never found anything other than a Realtek chipset on offer. Even if
Atheros or Ralink are more stable, I don't know if I could actually
*find* one. I am well aware that the Chinese company's dongle made in
People's Dongle Factory Thirteen will have folded before the container
ship hits the States, but the Realtek chipset is the key...it is finally
why I know that can work with it.
Agustin Martin
Apr 5, 2021, 7:50:03 AM4/5/21
to
El dom, 4 abr 2021 a las 12:28, Devops PK Carlisle LLC
(<dev...@pkcarlisle.com>) escribió:
involved with each driver and how well tested is the code.
In the particular case of rtw88 driver (the one supporting chipsets in
the subject), it is maintained by Realtek folks with additional
contributions from the community. Some chipsets are supported, some
not yet. For the case I know (rtl8821ce), original chipset is
supported, but support for other variants (e.g., rfe 2) was late for
5.11 (Realtek tests took longer than expected), but will be present in
5.12 kernel, requiring new firmware
(https://lkml.org/lkml/2021/2/2/76). I think the best option is to
wait for that kernel and firmware to reach debian-backports. For other
variants of other chipsets things may be fifferent.
Regards,
--
Agustin
(<dev...@pkcarlisle.com>) escribió:
>
> This is interesting.
>
> First, I must ask... Are either Ralink or Atheros more quickly adopted
> into Linux support before Realtek? Are they more stable, etc.? (In my
> original post, I noted that I pulled a Realtek based 5ghz dongle from an
> extreme end user system, in no small part due to stability/reliability)?
I do not think so, I guess this mostly depends on how many people are
> This is interesting.
>
> First, I must ask... Are either Ralink or Atheros more quickly adopted
> into Linux support before Realtek? Are they more stable, etc.? (In my
> original post, I noted that I pulled a Realtek based 5ghz dongle from an
> extreme end user system, in no small part due to stability/reliability)?
involved with each driver and how well tested is the code.
In the particular case of rtw88 driver (the one supporting chipsets in
the subject), it is maintained by Realtek folks with additional
contributions from the community. Some chipsets are supported, some
not yet. For the case I know (rtl8821ce), original chipset is
supported, but support for other variants (e.g., rfe 2) was late for
5.11 (Realtek tests took longer than expected), but will be present in
5.12 kernel, requiring new firmware
(https://lkml.org/lkml/2021/2/2/76). I think the best option is to
wait for that kernel and firmware to reach debian-backports. For other
variants of other chipsets things may be fifferent.
Regards,
--
Agustin
Michael Stone
Apr 5, 2021, 6:00:03 PM4/5/21
to
I've had just one that's completely reliable under linux (atheros
qca6174 chipset) even if it's a little slow (only 2x2 mimo, and possibly
hampered by the laptop's antenna configuration). It's older 802.11ac; I
haven't ever seen a working 802.11ax. (Not saying it doesn't exist, just
that I haven't seen it--hence the question!) I've seen lots of reports
of reliable devices, but they tend to be things that are either ancient,
or hard to find, or simply don't work as well for me as for others
(apparently). I've personally used a lot of devices that mostly worked,
until they hung or started going really slow or in some other way
behaved much worse than the phone sitting next to the laptop (ironically
running linux). I've heard good things about the intel adapters, but
AFAIK they aren't available in USB so if someone didn't happen to get a
laptop with that solution integrated it's not a simple end-user
addition.
IMO, wifi is the last major pain point to a fully functional linux
sytem. Most other things these days you can just buy a something off the
shelf at the local electronics store and odds are all the pieces will
work out of the box. But wifi still requires a good bit of research, and
isn't something a novice will find simple unless they get lucky on their
components or bought something from a specialty retailer that focuses on
linux systems.
Alexander E. Patrakov
Apr 6, 2021, 3:10:03 AM4/6/21
to
Andrey Rahmatullin wrote:
> Can you please list some unsupported chips in addition to these specific Realtek ones?
Bad question.
> Can you please list some unsupported chips in addition to these specific Realtek ones?
Recently I had to choose and buy a USB WiFi adapter suitable for
making a software access point. And this is in a semi-rural area, so
almost no interference from neighbors. So I thought, let's make sure
that the USB bus is not a limiting factor. I.e., the requirements are:
USB3, 802.11ac or ax, can act as an access point in Linux, can
actually be bought here in Russia. Result: all (and yes I mean "all",
100%) of USB3 WiFi adapters available in Russia (according to
market.yandex.ru, which aggregates almost all major shops) are based
on various unsupported-in-mainline Realtek chipsets (RTL8812AU,
RTL8814AU, RTL8812BU). So there is no exception. You can check this
yourself by going through this product list, it's not that long:
https://market.yandex.ru/catalog--wi-fi-oborudovanie-v-ekaterinburge/55410/list?cpa=0&hid=723087&glfilter=4863258%3A12107055&glfilter=18057628%3A18057633%2C18057635&glfilter=4863263%3A12107090&glfilter=4863264%3A12107093&onstock=1&local-offers-first=1
The two adapters (TP-LINK Archer T4U Plus and D-link DWA-182/E1) that
are not known to wikidevi.wi-cat.ru can still be identified as
something Realtek-based by downloading Windows drivers.
I ordered a (Mediatek-based) Alfa Networks AWUS036ACM adapter from
Amazon, but it took way too long to arrive (it did, eventually, long
after I have given up, that's why the local shopping attempt).
So I ended up buying a TP-Link Archer T3U v3.2 in a local shop and
using it with a driver from https://github.com/cilynx/rtl88x2bu, and
it does yield throughput higher than the theoretical limit of USB 2.0.
--
Alexander E. Patrakov
CV: http://u.pc.cd/wT8otalK
Andrey Rahmatullin
Apr 6, 2021, 3:10:03 AM4/6/21
to
On Tue, Apr 06, 2021 at 11:46:34AM +0500, Alexander E. Patrakov wrote:
> Andrey Rahmatullin wrote:
>
> > Can you please list some unsupported chips in addition to these specific Realtek ones?
>
> Bad question.
>
> Recently I had to choose and buy a USB WiFi adapter suitable for
> making a software access point. And this is in a semi-rural area, so
> almost no interference from neighbors. So I thought, let's make sure
> that the USB bus is not a limiting factor. I.e., the requirements are:
> USB3, 802.11ac or ax, can act as an access point in Linux, can
> actually be bought here in Russia. Result: all (and yes I mean "all",
> 100%) of USB3 WiFi adapters available in Russia (according to
> market.yandex.ru, which aggregates almost all major shops) are based
> on various unsupported-in-mainline Realtek chipsets (RTL8812AU,
> RTL8814AU, RTL8812BU). So there is no exception. You can check this
> yourself by going through this product list, it's not that long:
>
> https://market.yandex.ru/catalog--wi-fi-oborudovanie-v-ekaterinburge/55410/list?cpa=0&hid=723087&glfilter=4863258%3A12107055&glfilter=18057628%3A18057633%2C18057635&glfilter=4863263%3A12107090&glfilter=4863264%3A12107093&onstock=1&local-offers-first=1
I see now, this is a problem specific to USB adapters.
> Andrey Rahmatullin wrote:
>
> > Can you please list some unsupported chips in addition to these specific Realtek ones?
>
> Bad question.
>
> Recently I had to choose and buy a USB WiFi adapter suitable for
> making a software access point. And this is in a semi-rural area, so
> almost no interference from neighbors. So I thought, let's make sure
> that the USB bus is not a limiting factor. I.e., the requirements are:
> USB3, 802.11ac or ax, can act as an access point in Linux, can
> actually be bought here in Russia. Result: all (and yes I mean "all",
> 100%) of USB3 WiFi adapters available in Russia (according to
> market.yandex.ru, which aggregates almost all major shops) are based
> on various unsupported-in-mainline Realtek chipsets (RTL8812AU,
> RTL8814AU, RTL8812BU). So there is no exception. You can check this
> yourself by going through this product list, it's not that long:
>
> https://market.yandex.ru/catalog--wi-fi-oborudovanie-v-ekaterinburge/55410/list?cpa=0&hid=723087&glfilter=4863258%3A12107055&glfilter=18057628%3A18057633%2C18057635&glfilter=4863263%3A12107090&glfilter=4863264%3A12107093&onstock=1&local-offers-first=1
The same page for PCIe ones lists a lot of Intel and BCM ones (I wouln't
buy BCM of course but I know there is some BCM stuff in Debian). All my
WiFi adapters I ever used with Linux (included with a laptop, included
with a motherboard, bought separatele for PCIe) were either Intel or
Ralink and all of them worked fine without extra drivers, even though
iwlwifi sometimes breaks with some kernel versions.
--
WBR, wRAR
Christian Kastner
Apr 6, 2021, 3:20:02 AM4/6/21
to
On 01.04.21 08:52, Andrey Rahmatullin wrote:
> Can you please list some unsupported chips in addition to these specific
> Realtek ones?
I was looking for a WIFI USB dongle recently, and I found this site
> Can you please list some unsupported chips in addition to these specific
> Realtek ones?
quite useful for determining support status (I'm linking directly to the
chipset page, but the site in general has interesting stuff):
http://en.techinfodepot.shoutwiki.com/wiki/Wireless_Adapters/Chipset_table
The page seems to be somewhat up-to-date, too.
Best,
Christian
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