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

Groups > linux.debian.kernel > #74985 > unrolled thread

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

Back to article view | Back to linux.debian.kernel

Contents

  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

#74985 — Bug#1008973: linux-image-amd64: Very slow wireless with MEDIATEK 7961

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.

-- System Information:
Debian Release: 11.2
  APT prefers stable
  APT policy: (900, 'stable'), (500, 'stable-updates'), (500, 'stable-security'), (1, 'experimental'), (1, 'unstable')
Architecture: amd64 (x86_64)

Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages linux-image-amd64 depends on:
ii  linux-image-5.10.0-10-amd64  5.10.84-1

linux-image-amd64 recommends no packages.

linux-image-amd64 suggests no packages.

-- no debconf information

[toc] | [next] | [standalone]

#74988

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

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.
> 

[toc] | [prev] | [next] | [standalone]

#75055 — Bug#1008973: (no subject)

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

[toc] | [prev] | [next] | [standalone]

#75084

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

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

[toc] | [prev] | [next] | [standalone]

#75091

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 !

[toc] | [prev] | [next] | [standalone]

#75607

Hello !

I tried this one also 
https://packages.debian.org/sid/linux-image-5.17.0-3-amd64-unsigned, 
same issue.
I saw that 5.18 was available, so I tried 
https://packages.debian.org/sid/linux-image-5.18.0-1-amd64, it's better 
but we're still far from 5.15...

Le 20/04/2022 à 14:28, Julien Negros a écrit :
> 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

[toc] | [prev] | [next] | [standalone]

#75083 — Processed: Re: Bug#1008973: linux-image-amd64: Very slow wireless with MEDIATEK 7961

Processing control commands:

> tags -1 moreinfo
Bug #1008973 [linux-image-amd64] linux-image-amd64: Very slow wireless with MEDIATEK 7961
Added tag(s) moreinfo.

-- 
1008973: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1008973
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

[toc] | [prev] | [next] | [standalone]

#75085 — Processed: Re: Bug#1008973: linux-image-amd64: Very slow wireless with MEDIATEK 7961

Processing control commands:

> tags -1 moreinfo
Bug #1008973 [linux-image-amd64] linux-image-amd64: Very slow wireless with MEDIATEK 7961
Ignoring request to alter tags of bug #1008973 to the same tags previously set

-- 
1008973: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1008973
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

[toc] | [prev] | [standalone]

Back to top | Article view | linux.debian.kernel

csiph-web