I'm able to reproduce this with QCA6174 802.11ac Wireless Network Adapter on a Dell XPS 13 9370 (07E6). From a bit of googling this seems to be a widespread problem, but only mentioned solution is to replace the wifi card, as also mentioned in this bug report.
Jay, did you have any success from testing the newer kernel + firmware? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1828578 Title: dell xps 9570 killer wifi reconnection issue followed by freeze + Ubuntu 18.04.2 LTS Status in linux package in Ubuntu: Confirmed Status in linux-firmware package in Ubuntu: Confirmed Bug description: Hello Team, Env - Dell XPS 9570 Ubuntu 18.04.2 , HWE kernel We are facing intermittently wifi reconnection issue on Ubuntu 18.04. Software upgrade is up-to date. Also some time we facing freezing issue due to this hard reset required to make machine back to normal. Please let me know if there are any known issue with this particular model on 18.04 ? Please let me know. Thanks Jay --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: itops 1579 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 18.04 InstallationDate: Installed on 2019-04-25 (17 days ago) InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 27c6:5395 Bus 001 Device 002: ID 0cf3:e300 Atheros Communications, Inc. Bus 001 Device 004: ID 0c45:671d Microdia Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. XPS 15 9570 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-18-generic root=UUID=c41f7762-f3a2-4b42-a019-97ca9bd85edc ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 4.18.0-18.19~18.04.1-generic 4.18.20 RelatedPackageVersions: linux-restricted-modules-4.18.0-18-generic N/A linux-backports-modules-4.18.0-18-generic N/A linux-firmware 1.173.5 Tags: bionic Uname: Linux 4.18.0-18-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: sudo WifiSyslog: _MarkForUpload: True dmi.bios.date: 04/26/2019 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.10.1 dmi.board.name: 0HWTMH dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.asset.tag: IT-07384 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.10.1:bd04/26/2019:svnDellInc.:pnXPS159570:pvr:rvnDellInc.:rn0HWTMH:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 15 9570 dmi.product.sku: 087C dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1828578/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
