Comment 0 for bug 1536490

Seems to be the same as https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1528005/

Lenovo Ideapad 300 (80Q7008EAU - 15.6" i5 8Gb 1TB) on fresh install of amd64 Wily/15.10. Wifi worked ok under Windows 10 home that came with it.

rtl8821ae driver loaded. Connected to AP fine. Got IP address, GW, DNS etc correctly, but no traffic.

Workaround worked fine:
git clone https://github.com/lwfinger/rtlwifi_new.git
cd rtlwifi_new
sudo make install
sudo restart now

FWIW, proper 802.11ac speeds copying large files.

Same problem after apt-get upgrade installed linux-image-4.2.0-25-generic. make installed the above driver again and all good.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: linux-image-4.2.0-25-generic 4.2.0-25.30
ProcVersionSignature: Ubuntu 4.2.0-25.30-generic 4.2.6
Uname: Linux 4.2.0-25-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: si 1379 F.... pulseaudio
CurrentDesktop: XFCE
Date: Thu Jan 21 17:25:45 2016
HibernationDevice: RESUME=UUID=ccc3ab01-94d8-4d55-89b4-21ece100a3d6
InstallationDate: Installed on 2016-01-21 (0 days ago)
InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 004: ID 0bda:0821 Realtek Semiconductor Corp.
 Bus 001 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
 Bus 001 Device 002: ID 174f:14e9 Syntek
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: LENOVO 80Q7
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-25-generic.efi.signed root=UUID=cab1a31f-1f61-43e6-a6e7-2edc12bb048d ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.2.0-25-generic N/A
 linux-backports-modules-4.2.0-25-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: 08/13/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: D5CN28WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: Paris 5A8
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40700 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo ideapad 300-15ISK
dmi.modalias: dmi:bvnLENOVO:bvrD5CN28WW:bd08/13/2015:svnLENOVO:pn80Q7:pvrLenovoideapad300-15ISK:rvnLENOVO:rnParis5A8:rvrSDK0J40700WIN:cvnLENOVO:ct10:cvrLenovoideapad300-15ISK:
dmi.product.name: 80Q7
dmi.product.version: Lenovo ideapad 300-15ISK
dmi.sys.vendor: LENOVO