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Initially when I installed Ubuntu 15.04 for some reason the default Wireless card driver did not work, So I followed this answer and make it to work.

Basically using this,

echo "options ath10k_core skip_otp=y" | sudo tee /etc/modprobe.d/ath10k_core.conf
sudo apt-get install build-essential linux-headers-$(uname -r)
wget https://www.kernel.org/pub/linux/kernel/projects/backports/2015/09/03/backports-20150903.tar.gz
tar -zxvf backports-20150903.tar.gz
cd backports-20150903
make defconfig-ath10k
make
sudo make install

But now for some reason, Wifi connection is very slow and unusable when it comes to downloading 100MB files. But on my Windows the download is lightning fast.

iwconfig

eth0      no wireless extensions.

wlan0     IEEE 802.11abgn  ESSID:"Easyaccess"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: 74:85:2A:6C:F6:38   
          Bit Rate=1 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=50/70  Signal level=-60 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:112  Invalid misc:417   Missed beacon:0

docker0   no wireless extensions.

lo        no wireless extensions.

sudo lshw -class network

  *-network               
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: eth0
       version: 10
       serial: 68:f7:28:aa:d8:ff
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd 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=rtl8168g-3_0.0.1 04/23/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:48 ioport:4000(size=256) memory:c4204000-c4204fff memory:c4200000-c4203fff
  *-network
       description: Wireless interface
       product: Qualcomm Atheros
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlan0
       version: 20
       serial: d0:53:49:e6:ed:91
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath10k_pci driverversion=3.19.0-37-generic firmware=atheros-12.0.0.102-fw ip=192.168.2.25 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
       resources: irq:51 memory:c4000000-c41fffff

lspci

00:00.0 Host bridge: Intel Corporation Broadwell-U Host Bridge -OPI (rev 09)
00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09)
00:03.0 Audio device: Intel Corporation Broadwell-U Audio Controller (rev 09)
00:14.0 USB controller: Intel Corporation Wildcat Point-LP USB xHCI Controller (rev 03)
00:16.0 Communication controller: Intel Corporation Wildcat Point-LP MEI Controller #1 (rev 03)
00:1b.0 Audio device: Intel Corporation Wildcat Point-LP High Definition Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #1 (rev e3)
00:1c.2 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #3 (rev e3)
00:1c.3 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #4 (rev e3)
00:1c.4 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #5 (rev e3)
00:1f.0 ISA bridge: Intel Corporation Wildcat Point-LP LPC Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation Wildcat Point-LP SATA Controller [AHCI Mode] (rev 03)
00:1f.3 SMBus: Intel Corporation Wildcat Point-LP SMBus Controller (rev 03)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)
03:00.0 Network controller: Qualcomm Atheros Device 003e (rev 20)
04:00.0 3D controller: NVIDIA Corporation GM108M [GeForce 840M] (rev a2)

rfkill list all

0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: ideapad_bluetooth: Bluetooth
    Soft blocked: yes
    Hard blocked: no
2: hci0: Bluetooth
    Soft blocked: yes
    Hard blocked: no
3: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

I am new to Ubuntu, but I can give any Ubuntu check logs if needed.

Thanks

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1 Answer 1

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I upgraded my kernel to 15.10's and it works perfectly now. I will absolutely keep up with this post and update it if I run into any other issues.

This particular answer basically solved the issue. But this solution did not work for me.

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