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Bug#917941: Installation Buster on HP 17-by Notebook

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  Bug#917941: Installation Buster on HP 17-by Notebook Cyril Brulebois <kibi@debian.org> - 2019-01-03 17:30 +0100
    Bug#917941: Installation Buster on HP 17-by Notebook Moritz Mühlenhoff <jmm@inutil.org> - 2019-12-07 12:10 +0100

#62958 — Bug#917941: Installation Buster on HP 17-by Notebook

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Hi Bernhard,

Bernhard <bewoern1@gmail.com> (2019-01-03):
> Thanks for your response.
> In my installer image, the firmware-realtek.deb is available.
> 
> I'm not sure, if the WLAN ethernet adapter is supported from current kernel 4.19.
> It would be great, if the WLAN ethernet adapter can be supported in Debian 10 "buster".
> 
> Attached, there is the syslog.

[This mail didn't reach debian-boot@ due to the attachment's size, sorry
for not having suggested compression in the first place.]

Looking at the syslog, the nic-wireless udeb is loaded successfully and
no interfaces show up, so I've spent some more time digging around, and
found that some linux forks have merged out of tree drivers, including
the separate rtl8821ce module, e.g. at [1], which isn't in mainline yet
as of v4.20+):
| kibi@armor:~/hack/linux.git$ git log endless/master -- drivers/net/wireless/rtl8821ce
| commit 3966567041ddd2d355a28ad980a3b5d68b36f975
| Author: Daniel Drake <drake@endlessm.com>
| Date:   Tue Nov 6 11:34:48 2018 +0800
| 
|     rtl8821ce: fix build for Linux-4.19
| 
| commit 856fff46ec4d60c2c3e4c6aba3c6442fd703e948
| Author: Chris Chiu <chiu@endlessm.com>
| Date:   Mon Aug 28 13:21:22 2017 +0800
| 
|     rtl8821ce: integrate and fix build
|     
|     https://phabricator.endlessm.com/T18646
| 
| commit 2102de7420ecb9136471cd5bf29ad7165a560614
| Author: Chris Chiu <chiu@endlessm.com>
| Date:   Mon Aug 28 13:14:23 2017 +0800
| 
|     Import rtl8821ce wifi driver
|     
|     From Realtek official release rtl8821CE_WiFi_linux_v5.2.5_23431.20170824_COEX20170310-1212.tar.gz
|     
|     https://phabricator.endlessm.com/T18646

 1. https://github.com/endlessm/linux/tree/master/drivers/net/wireless/rtl8821ce

So I guess there's not much we can do on the debian-installer side, we
would need to get this module merged into our linux source package to
make use of it, and I don't think the kernel team would add random out
of tree modules. ISTR backporting drivers is something that happens, so
we might get this module supported in a later 4.19.x release, once it
reaches mainline and someone backports it?

Cc'ing kernel team to make sure I'm not entirely wrong here. Maybe also
steal this bug away from installation-reports and have it retitled “no
support for rtl8821ce” or something similar?


Cheers,
-- 
Cyril Brulebois (kibi@debian.org)            <https://debamax.com/>
D-I release manager -- Release team member -- Freelance Consultant

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#65823

On Thu, Jan 03, 2019 at 05:21:05PM +0100, Cyril Brulebois wrote:
> 
>  1. https://github.com/endlessm/linux/tree/master/drivers/net/wireless/rtl8821ce
> 
> So I guess there's not much we can do on the debian-installer side, we
> would need to get this module merged into our linux source package to
> make use of it, and I don't think the kernel team would add random out
> of tree modules. ISTR backporting drivers is something that happens, so
> we might get this module supported in a later 4.19.x release, once it
> reaches mainline and someone backports it?
> 
> Cc'ing kernel team to make sure I'm not entirely wrong here. Maybe also
> steal this bug away from installation-reports and have it retitled “no
> support for rtl8821ce” or something similar?

An official driver for Realtek 802.11ac chips was added to Linux 5.2
(rtw88) which is maintained by Realtek staff. Unfortunately it currently
only supports the RTL8822 chips, but the initial commit for 5.2 mentioned
that also want to add support for RTL8821.

Cheers,
        Moritz

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