wlan0 not showing up.... MEDIATEK Corp. MT7630e 802.11bgn Wireless

here is what when I type ifconfig

eth0      Link encap:Ethernet  HWaddr a0:48:1c:0a:47:f3  
          inet addr:192.168.25.186  Bcast:192.168.25.255  Mask:255.255.255.0
          inet6 addr: fe80::a248:1cff:fe0a:47f3/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:41528 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16348 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:23075826 (23.0 MB)  TX bytes:2128515 (2.1 MB)

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:1951 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1951 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:189033 (189.0 KB)  TX bytes:189033 (189.0 KB)

on typing lspci -nnk

00:00.0 Host bridge [0600]: Intel Corporation Haswell-ULT DRAM Controller [8086:0a04] (rev 09)
    Subsystem: Hewlett-Packard Company Device [103c:2164]
00:02.0 VGA compatible controller [0300]: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09)
    Subsystem: Hewlett-Packard Company Device [103c:2164]
    Kernel driver in use: i915
00:03.0 Audio device [0403]: Intel Corporation Haswell-ULT HD Audio Controller [8086:0a0c] (rev 09)
    Subsystem: Hewlett-Packard Company Device [103c:2164]
    Kernel driver in use: snd_hda_intel
00:14.0 USB controller [0c03]: Intel Corporation Lynx Point-LP USB xHCI HC [8086:9c31] (rev 04)
    Subsystem: Hewlett-Packard Company Device [103c:2164]
    Kernel driver in use: xhci_hcd
00:16.0 Communication controller [0780]: Intel Corporation Lynx Point-LP HECI #0 [8086:9c3a] (rev 04)
    Subsystem: Hewlett-Packard Company Device [103c:2164]
    Kernel driver in use: mei_me
00:1b.0 Audio device [0403]: Intel Corporation Lynx Point-LP HD Audio Controller [8086:9c20] (rev 04)
    Subsystem: Hewlett-Packard Company Device [103c:2164]
    Kernel driver in use: snd_hda_intel
00:1c.0 PCI bridge [0604]: Intel Corporation Lynx Point-LP PCI Express Root Port 1 [8086:9c10] (rev e4)
    Kernel driver in use: pcieport
00:1c.1 PCI bridge [0604]: Intel Corporation Lynx Point-LP PCI Express Root Port 2 [8086:9c12] (rev e4)
    Kernel driver in use: pcieport
00:1c.2 PCI bridge [0604]: Intel Corporation Lynx Point-LP PCI Express Root Port 3 [8086:9c14] (rev e4)
    Kernel driver in use: pcieport
00:1c.3 PCI bridge [0604]: Intel Corporation Lynx Point-LP PCI Express Root Port 4 [8086:9c16] (rev e4)
    Kernel driver in use: pcieport
00:1c.4 PCI bridge [0604]: Intel Corporation Lynx Point-LP PCI Express Root Port 5 [8086:9c18] (rev e4)
    Kernel driver in use: pcieport
00:1d.0 USB controller [0c03]: Intel Corporation Lynx Point-LP USB EHCI #1 [8086:9c26] (rev 04)
    Subsystem: Hewlett-Packard Company Device [103c:2164]
    Kernel driver in use: ehci-pci
00:1f.0 ISA bridge [0601]: Intel Corporation Lynx Point-LP LPC Controller [8086:9c43] (rev 04)
    Subsystem: Hewlett-Packard Company Device [103c:2164]
    Kernel driver in use: lpc_ich
00:1f.2 SATA controller [0106]: Intel Corporation Lynx Point-LP SATA Controller 1 [AHCI mode] [8086:9c03] (rev 04)
    Subsystem: Hewlett-Packard Company Device [103c:2164]
    Kernel driver in use: ahci
00:1f.3 SMBus [0c05]: Intel Corporation Lynx Point-LP SMBus Controller [8086:9c22] (rev 04)
    Subsystem: Hewlett-Packard Company Device [103c:2164]
08:00.0 Network controller [0280]: MEDIATEK Corp. MT7630e 802.11bgn Wireless Network Adapter [14c3:7630]
    Subsystem: Hewlett-Packard Company Device [103c:197c]
09:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 08)
    Subsystem: Hewlett-Packard Company Device [103c:2164]
    Kernel driver in use: r8169
0a:00.0 Display controller [0380]: Advanced Micro Devices, Inc. [AMD/ATI] Sun XT [Radeon HD 8670A/8670M/8690M] [1002:6660] (rev ff)
    Kernel driver in use: radeon

It is a known issue and there are instructions to install manually a driver at https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1220146/comments/125

Thank you, the link above works fine, if the error "I do not know how to handle rt2x00 ..." appears while trying

sudo dkms add –m rt2x00 –v VV
sudo dkms build –m rt2x00 –v VV
sudo dkms install –m rt2x00 –v VV
sudo dkms install –m rt2x00 –v VV --force

Try instead:

sudo dkms add rt2x00/VV
sudo dkms build rt2x00/VV
sudo dkms install rt2x00/VV
sudo dkms install rt2x00/VV --force

At least it worked for me.