Finally I installed Ubuntu 18.04 from scratch. It solved all networking issues
-- 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/1757561 Title: [Toshiba Satellite S55-A579] Wifi disconnects randomly under ubuntu 17.10 Status in linux package in Ubuntu: Incomplete Bug description: Wifi connection on my Laptop Toshiba S55-A579 with UBUNTU 17.10 gets disconnected at random intervals. I noticed this behavior 2 months ago and still no solution available. It disconnects at home and even at public places. Sometimes, when the disconnection happens, the icon of wifi at the top bar transform into a grey box. The controller is: 03:00.0 Network controller: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01) Setting wifi.scan-rand-mac-address=no, disconnecting the energy saver feature, and installing firmware firmware-ath9k-htc_1.4.0-81-gf206e56 +dfsg-2_all, doesn't help at all. --- ApportVersion: 2.20.7-0ubuntu3.7 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: mijail 2516 F.... pulseaudio /dev/snd/controlC0: mijail 2516 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 17.10 HibernationDevice: RESUME=UUID=e32f2e63-8a73-4f97-b24b-9a924d0a6971 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2017-11-18 (124 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018) IpRoute: default via 192.168.1.254 dev wlp3s0 proto static metric 600 169.254.0.0/16 dev wlp3s0 scope link metric 1000 192.168.1.0/24 dev wlp3s0 proto kernel scope link src 192.168.1.22 metric 600 MachineType: TOSHIBA Satellite S55-A NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia Package: network-manager 1.8.4-1ubuntu3 PackageArchitecture: amd64 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-37-generic root=UUID=e42cf0fe-179e-46be-947b-27a5a1e4da66 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.13.0-37.42-generic 4.13.13 RelatedPackageVersions: linux-restricted-modules-4.13.0-37-generic N/A linux-backports-modules-4.13.0-37-generic N/A linux-firmware 1.169.3 Tags: artful third-party-packages Uname: Linux 4.13.0-37-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 09/19/2014 dmi.bios.vendor: TOSHIBA dmi.bios.version: 1.90 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: VG10S dmi.board.vendor: TOSHIBA dmi.board.version: To be filled by O.E.M. dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: TOSHIBA dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnTOSHIBA:bvr1.90:bd09/19/2014:svnTOSHIBA:pnSatelliteS55-A:pvrPSKK6U-00X00C:rvnTOSHIBA:rnVG10S:rvrTobefilledbyO.E.M.:cvnTOSHIBA:ct10:cvrToBeFilledByO.E.M.: dmi.product.family: PEGA Family dmi.product.name: Satellite S55-A dmi.product.version: PSKK6U-00X00C dmi.sys.vendor: TOSHIBA modified.conffile..etc.NetworkManager.conf.d.default-wifi-powersave-on.conf: [connection] wifi.powersave = 0 mtime.conffile..etc.NetworkManager.conf.d.default-wifi-powersave-on.conf: 2018-03-21T22:57:47.465761 nmcli-dev: DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH wlp3s0 wifi connected /org/freedesktop/NetworkManager/Devices/3 Bbox_Amandine 806153c3-7543-49de-838c-9261d9f3f730 /org/freedesktop/NetworkManager/ActiveConnection/40 enp4s0 ethernet unavailable /org/freedesktop/NetworkManager/Devices/2 -- -- -- lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/1 -- -- -- nmcli-nm: RUNNING VERSION STATE STARTUP CONNECTIVITY NETWORKING WIFI-HW WIFI WWAN-HW WWAN running 1.8.4 connected started full enabled enabled enabled enabled enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1757561/+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
