I've had similar problems with the rtl8xxxu driver and the same hardware: [ 8.097402] usb 1-1.4: RTL8723AU rev B (TSMC) 1T1R, TX queues 2, WiFi=1, BT=1, GPS=0, HI PA=0
I presume yours is also a Lenovo Yoga 13? I submitted a small patch to increase the firmware polling delay. This patch appears to resolve the issue for me: http://thread.gmane.org/gmane.linux.kernel.wireless.general/152169 -- 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/1574622 Title: RTL8723AU No WiFi after reboot Status in linux package in Ubuntu: Confirmed Bug description: After rebooting the system, the wifi is not initialized correctly. dmesg lists [ 14.132275] usb 2-5: Firmware failed to start However, after complete shutdown and startup the chip works just fine. I was using 14.04 before and this chip has always been kind of dodgy, requiring a kernel module from github for some time. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-21-generic 4.4.0-21.37 [modified: boot/vmlinuz-4.4.0-21-generic] ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: enbewe 1685 F.... pulseaudio /dev/snd/controlC1: enbewe 1685 F.... pulseaudio CurrentDesktop: Unity Date: Mon Apr 25 14:34:09 2016 HibernationDevice: RESUME=UUID=ca32a7cb-a574-4faf-9376-ab44bae3ac42 InstallationDate: Installed on 2016-04-22 (2 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: LENOVO 20246 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic.efi.signed root=UUID=dbed3725-2e1c-4a74-8594-6fd4cdb20e21 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-21-generic N/A linux-backports-modules-4.4.0-21-generic N/A linux-firmware 1.157 SourcePackage: linux StagingDrivers: r8723au UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/08/2013 dmi.bios.vendor: LENOVO dmi.bios.version: 8FCN36WW(V1.03) dmi.board.asset.tag: No Asset Tag dmi.board.name: Yoga2 dmi.board.vendor: LENOVO dmi.board.version: 31900003STD dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo IdeaPad Yoga 11S dmi.modalias: dmi:bvnLENOVO:bvr8FCN36WW(V1.03):bd10/08/2013:svnLENOVO:pn20246:pvrLenovoIdeaPadYoga11S:rvnLENOVO:rnYoga2:rvr31900003STD:cvnLENOVO:ct10:cvrLenovoIdeaPadYoga11S: dmi.product.name: 20246 dmi.product.version: Lenovo IdeaPad Yoga 11S dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1574622/+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
