@taihsiang, I'd like you to try 2 things:
1. Install the same kernel just like you did and if you have the same failure power the system off and then back on and see if you still have the problem. 2. Test with the lts-xenial kernel and see if you have the same issue. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-lts-vivid in Ubuntu. https://bugs.launchpad.net/bugs/1659614 Title: [Lenovo M700z] Wifi malfunctions after updating system Status in linux package in Ubuntu: Triaged Status in linux-lts-vivid package in Ubuntu: Triaged Bug description: Lenovo M700z (CID 201601-20436) with its pre-installed image. [Steps To Reproduce] Enable the proposed pocket, and then update the system by 'sudo apt-get dist-upgrade' [Expected Result] Wifi works [Actual Result] Wifi malfunctions. The network indicator does not show any wireless AP. -------- ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.19.0-80-generic 3.19.0-80.88~14.04.1 ProcVersionSignature: Ubuntu 3.19.0-80.88~14.04.1-generic 3.19.8-ckt22 Uname: Linux 3.19.0-80-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.23 Architecture: amd64 Date: Fri Jan 27 01:28:34 2017 DistributionChannelDescriptor: # This is a distribution channel descriptor # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-sutton-m700z-trusty-amd64-20160314-0 InstallationDate: Installed on 2017-01-25 (1 days ago) InstallationMedia: Ubuntu 14.04 "Trusty" - Failed to find casper uuid.conf in 'binary/casper/initrd.img-3.19.0-37-generic.old-dkms' LIVE Binary 20160314-09:31 SourcePackage: linux-lts-vivid UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1659614/+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
