** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1772467
Title:
Driver iwlwifi for Intel Wireless-AC 9560 is slow and unreliable in
kernel 4.15.0-20-generic
Status in linux package in Ubuntu:
Confirmed
Bug description:
This is a hardware specific issue with Ubuntu 18.04 and kernel
4.15.0-20-generic. The driver for the Intel AC 9560 wireless chip
causes the problem. Driver location:
https://www.intel.com/content/www/us/en/support/articles/000005511
/network-and-i-o/wireless-networking.html
The wifi connection is very slow (1MB instead of 100MB possible
download speed, upload speed is normal) and is also very unreliable.
When installing the 4.16 kernel from mainline kernel
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16/ the described
problem is solved.
Sytem data:
Description: Ubuntu 18.04 LTS
Release: 18.04
Package:
4.15.0-20-generic
driver=iwlwifi driverversion=4.15.0-20-generic firmware=34.0.0
---
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: david 1729 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2018-05-19 (2 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
MachineType: Acer Swift SF114-32
Package: linux (not installed)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=de_AT.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-20-generic
root=UUID=39ea17c1-4c91-45ac-81a7-401583763b21 ro quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
RelatedPackageVersions:
linux-restricted-modules-4.15.0-20-generic N/A
linux-backports-modules-4.15.0-20-generic N/A
linux-firmware 1.173
Tags: bionic
Uname: Linux 4.15.0-20-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 05/02/2018
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V1.03
dmi.board.name: Sapporo_GL
dmi.board.vendor: GLK
dmi.board.version: V1.03
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.03
dmi.modalias:
dmi:bvnInsydeCorp.:bvrV1.03:bd05/02/2018:svnAcer:pnSwiftSF114-32:pvrV1.03:rvnGLK:rnSapporo_GL:rvrV1.03:cvnAcer:ct10:cvrV1.03:
dmi.product.family: Swift 1
dmi.product.name: Swift SF114-32
dmi.product.version: V1.03
dmi.sys.vendor: Acer
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