Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.debian.kernel > #75091

Bug#1008973: linux-image-amd64: Very slow wireless with MEDIATEK 7961

From Julien Negros <julien.negros@enercoop.org>
Newsgroups linux.debian.bugs.dist, linux.debian.kernel
Subject Bug#1008973: linux-image-amd64: Very slow wireless with MEDIATEK 7961
Date 2022-04-20 14:40 +0200
Message-ID <EehMJ-9ZXF-9@gated-at.bofh.it> (permalink)
References <E8QNb-6E2x-1@gated-at.bofh.it> <EdWyB-9Nbk-3@gated-at.bofh.it> <E8QNb-6E2x-1@gated-at.bofh.it> <EdWyB-9Nbk-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

Cross-posted to 2 groups.

Show all headers | View raw


Hi Vincent,

Not sure I installed the right one 
(https://packages.debian.org/sid/linux-image-5.17.0-1-amd64-unsigned) 
but I couldn't find another.

Same issue for me, I even fell like it's worse :/

Le 19/04/2022 à 15:53, Vincent Blut a écrit :
> Control: tags -1 moreinfo
> 
> Hi,
> 
> Le 2022-04-05 14:39, Xavier Chantry a écrit :
>> Package: linux-image-amd64
>> Version: 5.10.84-1
>> Severity: important
>> X-Debbugs-Cc: chantry.xavier@gmail.com
>>
>> Dear Maintainer,
>>
>> We have a problem with MEDIATEK 7961 wireless on Levono P14s with AMD
>> Ryzen.
>>
>> With 5.10 kernel on debian stable the wireless just does not work, so we
>> installed kernel 5.16 from testing.
>>
>> With kernel 5.16 the wireless is so slow that it's unusable, each
>> internet query takes several seconds. A simple ping to google.com varies
>> from 100ms to 3000ms.
>>
>> With kernel 5.17 it's slighly better but the ping still goes up to
>> 600ms.
>>
>> With kernel 5.15 however, it works quite good, Internet is very usable,
>> ping varies from 3ms to 30ms.
>> (on the same network, the P14s with Intel wireless does better and is
>> always under 10ms).
>>
>> It looks like big changes were made to the mt7921e driver in 5.16
>> according to Phoronix :
>> The Mediatek MT7921 WiFi driver has added support for 6GHz WiFi, active
>> state power management (ASPM), and other improvements.
>>
>> And it looks like this caused a big regression with MEDIATEK 7961.
>>
>> Besides the network performance problem on 5.16, suspend/resume is also
>> broken, while it works perfectly on 5.15.
> 
> Le 2022-04-06 10:19, Christoph Martin a écrit :
>> I have the same Problem with an P14s and Mediathek 7921e.
>> There is even about 30% package loss.
>>
>> Christoph
>>
>> Am 05.04.22 um 14:39 schrieb Xavier Chantry:
>>>
>>> With kernel 5.16 the wireless is so slow that it's unusable, each
>>> internet query takes several seconds. A simple ping to google.com varies
>>> from 100ms to 3000ms.
>>>
>>> With kernel 5.17 it's slighly better but the ping still goes up to
>>> 600ms.
> 
> Le 2022-04-15 14:19, Julien Negros a écrit :
>> Hi,
>>
>> Same issue here, switching to linux-image-5.15.0-0.bpo.3-amd64 did the
>> trick. Hope the next kernel version fixes this problem !
>>
>> Cheers
>> -- 
>> Julien Négros
>   
> Linux 5.17.3 (uploaded to unstable earlier today) includes a lot of fixes for
> Mediatek WLAN devices. Could you please check if that kernel fixes the slowness
> you are seeing?
> 
> Cheers,
> Vincent

-- 
Julien Négros

Administrateur Système

01 81 80 23 80 / 580


Logo Enercoop

CETTE ANNÉE
Suivez-nous sur le chemin de la sobriété énergétique
Découvrez notre bwatt à outils ici
<https://www.enercoop.fr/la-bwatt-a-outils>,pour faire des économies
d'énergie !

Back to linux.debian.kernel | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

Bug#1008973: linux-image-amd64: Very slow wireless with MEDIATEK 7961 Xavier Chantry <chantry.xavier@gmail.com> - 2022-04-05 14:50 +0200
  Bug#1008973: linux-image-amd64: Very slow wireless with MEDIATEK 7961 Christoph Martin <martin@uni-mainz.de> - 2022-04-06 10:40 +0200
  Bug#1008973: (no subject) Julien Negros <julien.negros@enercoop.org> - 2022-04-15 14:40 +0200
    Bug#1008973: linux-image-amd64: Very slow wireless with MEDIATEK 7961 Vincent Blut <vincent.debian@free.fr> - 2022-04-19 16:00 +0200
      Bug#1008973: linux-image-amd64: Very slow wireless with MEDIATEK 7961 Julien Negros <julien.negros@enercoop.org> - 2022-04-20 14:40 +0200
        Bug#1008973: linux-image-amd64: Very slow wireless with MEDIATEK 7961 Julien Negros <julien.negros@enercoop.org> - 2022-06-15 12:50 +0200
  Processed: Re: Bug#1008973: linux-image-amd64: Very slow wireless  with MEDIATEK 7961 "Debian Bug Tracking System" <owner@bugs.debian.org> - 2022-04-19 16:00 +0200
  Processed: Re: Bug#1008973: linux-image-amd64: Very slow wireless  with MEDIATEK 7961 "Debian Bug Tracking System" <owner@bugs.debian.org> - 2022-04-19 16:00 +0200

csiph-web