Setting "XHCI Pre-Boot Mode" BIOS option to "Disabled" fixes the problem. But it disables USB 3.0 entirely, so it's not a solution.
-- 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/1523108 Title: Bluetooth doesn't work on ASUS Zenbook UX301LAA Status in linux package in Ubuntu: Incomplete Bug description: It's not possible to make bluetooth work. Pressing Fn+F2 doesn't change anything. Sometimes a grey (inactive) bluetooth icon appears but disappears instantly after attempt to turn it on. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-21-generic 4.2.0-21.25 ProcVersionSignature: Ubuntu 4.2.0-21.25-generic 4.2.6 Uname: Linux 4.2.0-21-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: shadowlmd 2409 F.... pulseaudio /dev/snd/controlC1: shadowlmd 2409 F.... pulseaudio CurrentDesktop: Unity Date: Sat Dec 5 18:03:20 2015 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=4443577b-ebf9-4f35-bd95-660448592ddb InstallationDate: Installed on 2015-10-22 (43 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: ASUSTeK COMPUTER INC. UX301LAA ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-21-generic.efi.signed root=UUID=e7df807f-bc9b-4cdf-85ae-38b8a3c6f016 ro quiet splash rootfstype=ext4 vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.2.0-21-generic N/A linux-backports-modules-4.2.0-21-generic N/A linux-firmware 1.149.3 SourcePackage: linux UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/05/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: UX301LAA.211 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: UX301LAA dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX301LAA.211:bd06/05/2015:svnASUSTeKCOMPUTERINC.:pnUX301LAA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX301LAA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.name: UX301LAA dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1523108/+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