wifi issue with 5.4.0-28 lowlatency kernel

[christophe moreau]

hello,
after fresh ubuntustudio 20.04 install, everything worked out the box
But after 5.4.0-28 lowlatency kernel update, wifi does not work properly
Connection to the wifi modem is ok, but network is abnormaly slow. Come bake to the previous kernel 5.4.0-26 fix the issue (both kernel using same backport-iwlwifi-dkms driver)
Hope this will help, and the issue will be fixed in the next released, be safe, bye

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-lowlatency 5.4.0.28.33
ProcVersionSignature: Ubuntu 5.4.0-28.32-lowlatency 5.4.30
Uname: Linux 5.4.0-28-lowlatency x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC3: transistor 2177 F.... pulseaudio
 /dev/snd/controlC2: transistor 2177 F.... pulseaudio
 /dev/snd/controlC1: transistor 2177 F.... pulseaudio
 /dev/snd/controlC0: transistor 2177 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
Date: Mon May 4 22:59:26 2020
InstallationDate: Installed on 2020-04-27 (7 days ago)
InstallationMedia: Ubuntu-Studio 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: Micro-Star International Co., Ltd. GL75 9SE
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-28-lowlatency root=UUID=5f158888-7a39-4245-8672-0f0aec9592f7 ro quiet splash vt.handoff=1
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-28-lowlatency N/A
 linux-backports-modules-5.4.0-28-lowlatency N/A
 linux-firmware 1.187
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/25/2019
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: E17E5IMS.103
dmi.board.asset.tag: Default string
dmi.board.name: MS-17E5
dmi.board.vendor: Micro-Star International Co., Ltd.
dmi.board.version: REV:1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Micro-Star International Co., Ltd.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrE17E5IMS.103:bd06/25/2019:svnMicro-StarInternationalCo.,Ltd.:pnGL759SE:pvrREV1.0:rvnMicro-StarInternationalCo.,Ltd.:rnMS-17E5:rvrREV1.0:cvnMicro-StarInternationalCo.,Ltd.:ct10:cvrN/A:
dmi.product.family: GL
dmi.product.name: GL75 9SE
dmi.product.sku: 17E5.1
dmi.product.version: REV:1.0
dmi.sys.vendor: Micro-Star International Co., Ltd.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[You-Sheng Yang (vicamo)]

Please remove backport-iwlwifi-dkms for this adapter. You don't need it as in tree driver has better support.

[christophe moreau (transistor2441)]

thank you for your quick answer

Problem is fixed after removing backport-iwlwifi-dkms driver ... seems I
was the bug !

thank you for your help ! take care for your health, bye

Le 05/05/2020 à 02:52, You-Sheng Yang a écrit :
> Please remove backport-iwlwifi-dkms for this adapter. You don't need it
> as in tree driver has better support.
>
> ** Tags added: hwe-networking-wifi
>
> ** Also affects: backport-iwlwifi-dkms (Ubuntu)
> Importance: Undecided
> Status: New
>
> ** No longer affects: linux (Ubuntu)
>