I don't know how to update the firmware, so I followed these instructions using fwupdmgr (https://itsfoss.com/update-firmware- ubuntu/).
The issue still occurs. dmesg attached. ** Attachment added: "dmesg.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1853005/+attachment/5307065/+files/dmesg.txt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1853005 Title: Wifi randomly drops out Status in linux package in Ubuntu: Confirmed Bug description: System: Linux Dell-XPS-13-9360 4.15.0-70-generic #79-Ubuntu SMP Tue Nov 12 10:36:11 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux Problem: Wifi randomly drops out. For example, I had trouble downloading a folder from a ssh server at uni. During the download, the wifi stopped. In the log of journalctl --follow, I found many records of the kernel complaining about an unknown pci event, which I think is related to the wifi dropping out. The output of journalctl --follow during the wifi drop outs is attached as the file log.txt. I deleted all entries from Nautilus and plank.desktop. Additional notes: simply turning the wifi on and off again re- establishes the connection, but obviously irritating if I need to download lots of files from a ssh server. Furthermore, my iPad has internet connection after my Linux laptop wifi drops out, so the problem is not the router/ISP. Update: limiting the download speed allowed me to download from the ssh server. scp -r -l 100 user@address:~/Documents/Textbooks ./ ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-70-generic 4.15.0-70.79 ProcVersionSignature: Ubuntu 4.15.0-70.79-generic 4.15.18 Uname: Linux 4.15.0-70-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.9 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: albert 2011 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Mon Nov 18 14:31:06 2019 HibernationDevice: RESUME=UUID=9f8b6855-caac-4e96-91bd-b366050fd722 InstallationDate: Installed on 2017-02-26 (995 days ago) InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 0bda:568b Realtek Semiconductor Corp. Bus 001 Device 003: ID 0cf3:e300 Atheros Communications, Inc. Bus 001 Device 002: ID 046d:c077 Logitech, Inc. M105 Optical Mouse Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. XPS 13 9360 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-70-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-4.15.0-70-generic N/A linux-backports-modules-4.15.0-70-generic N/A linux-firmware 1.173.12 SourcePackage: linux UpgradeStatus: Upgraded to bionic on 2018-10-06 (407 days ago) dmi.bios.date: 05/26/2019 dmi.bios.vendor: Dell Inc. dmi.bios.version: 2.12.0 dmi.board.name: 0T3FTF dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr2.12.0:bd05/26/2019:svnDellInc.:pnXPS139360:pvr:rvnDellInc.:rn0T3FTF:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.family: XPS dmi.product.name: XPS 13 9360 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1853005/+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
