networking - wifi card not recognizable at ubuntu 14.04 3.19.0-61-lowlatency

I installed a new partition in my PC with ubuntu 14.04 with lowlatency kernel:
uname -a:
3.19.0-61-lowlatency #69~14.04.1-Ubuntu SMP PREEMPT Thu Jun 9 10:15:00 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

The wifi card works and is recognizable at the other partition and even in the normal kernel, but with lowlatency kernel:

rfkill list:
0:hcio: Bluetooth
soft blocked: no
Hard blocked: no

without giving the wifi informations.

Ps: I can't connect my computer to Internet via Ethernet.

And the wlan0 config gives:
wlan0: error fetching interface information: Device not found.

I tryied to add the wlan0 interface on the interfaces files:
auto wlan0
iface wlan0 inet dhcp

And still does'nt working.

lspci -knn | grep Net -A3

02:00.0 Network controller [0280]: Intel Corporation Wireless 8260 [8086:24f3] (rev 3a) 
    Subsystem: Intel Corporation Dual Band Wireless-AC 8260 [8086:0010] 
03:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Opal XT [Radeon R7 M265] [1002:6604] (rev ff) 
Kernel driver in use: radeon 

Please help me.
Best regards.