wireless - Intel 8260 does not work in Ubuntu 14.04.3

I am brand new to the Linux community, and I have installed Ubuntu 14.04. However, I am having some issues with Wifi. Ubuntu does not recognize Wifi at all, and I think it might be a communication problem between the hardware and Ubuntu. I am using a brand new Lenovo Y700 with an intel Core i7 processor.

When I search in terminal for network hardware it recognizes the Intel Wireless 8260 wireless card, but says that it is unclaimed.

lshw -class network
  *-network UNCLAIMED
   description: Network controller
   product: Wireless 8260
   vendor: Intel Corporation
   physical id: 0
   bus info: pci@0000:08:00.0
   version: 3a
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress cap_list
   configuration: latency=0
   resources: memory:94100000-94101fff
  *-network
   description: Ethernet interface
   product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
   vendor: Realtek Semiconductor Co., Ltd.
   physical id: 0
   bus info: pci@0000:09:00.0
   logical name: eth0
   version: 15
   serial: 50:7b:9d:5f:1e:82
   size: 10Mbit/s
   capacity: 1Gbit/s
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
   configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
   resources: irq:24 ioport:3000(size=256) memory:94004000-94004fff memory:94000000-94003fff

and searching the network interface configuration does not show a WLAN device.

sudo ifconfig -a
eth0      Link encap:Ethernet  HWaddr 50:7b:9d:5f:1e:82
      UP BROADCAST MULTICAST  MTU:1500  Metric:1
      RX packets:0 errors:0 dropped:0 overruns:0 frame:0
      TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
lo        Link encap:Local Loopback
      inet addr:127.0.0.1  Mask:255.0.0.0
      inet6 addr: ::1/128 Scope:Host
      UP LOOPBACK RUNNING  MTU:65536  Metric:1
      RX packets:16 errors:0 dropped:0 overruns:0 frame:0
      TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:1184 (1.1 KB)  TX bytes:1184 (1.1 KB)

also, there is no information listed for a wireless card in rfkill

rfkill list all
0: hci0: Bluetooth
  Soft blocked: no
  Hard blocked: no

Here is the result of uname -r

3.19.0-25-generic

I have also attempted to add the proprietary internet drivers by going to System Settings -> Software and Updates -> Additional Drivers, and no proprietary drivers appear. I have searched in a number of places, but cannot find a solution that works.

How can I get Ubuntu to recognize that there is a wireless card in my computer? A hitch in my giddyup is that I do not have access to ethernet so am unable to just try adding different packages and installations easily.

Any help would be greatly appreciated. Could it be that I am having issues because this is a newer computer? or because it is designed for gaming? or just because I am new to Linux?

Thanks for any information, and please let me know any other information you'd like posted.

Paul

It looks like you installed Ubuntu 14.04.3 with kernel 3.19.

The problem is that the kernel 3.19 does support Intel 8260, but it needs firmware that is not in the original linux-firmware file.

It is even worse. This kernel supports firmware version 9-12 for this adapter, but the trusty-updates package has version 13.

Since you just did a fresh install, I suggest to download and install Ubuntu 14.04.4, that does support the wireless adapter.

Ubuntu 14.04.4 will install kernel 4.2 that supports firmware version 10-15 and you will get firmware v. 13 out-of-the-box.

That will be much easier than to upgrade the kernel without any internet access.

Hopefully your Ethernet adapter will work too. If this is not the case, you can ask another question regarding the Ethernet.

For Lenovo Yoga 700 the wireles adapter is blocked by ideapad_laptop kernel module. You can temporarily fix it by running

sudo modprobe -r ideapad_laptop

This issue has been fixed in the last kernel update since 4.2.0-28. After you install the system and update the kernel, your wireless adapter should work.

Do not forget to install updates for your system and you will not need to stop ideapad_laptop any more.