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
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