Ubuntu 16.04 : Ethernet connected but no internet access

I have set the IP address and all but not getting connection.

Checked with lspci -vvnn and got

01:00.0 Network controller [0280]: Qualcomm Atheros Device [168c:0042] (rev 31)
    Subsystem: Dell Device [1028:1810]
    Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx+
    Latency: 0
    Interrupt: pin A routed to IRQ 281
    Region 0: Memory at d1000000 (64-bit, non-prefetchable) [size=2M]
    Capabilities: <access denied>
    Kernel driver in use: ath10k_pci
    Kernel modules: ath10k_pci

02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 07)
    Subsystem: Dell RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [1028:078a]
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 0, Cache Line Size: 64 bytes
    Interrupt: pin A routed to IRQ 278
    Region 0: I/O ports at e000 [size=256]
    Region 2: Memory at d1204000 (64-bit, non-prefetchable) [size=4K]
    Region 4: Memory at d1200000 (64-bit, prefetchable) [size=16K]
    Capabilities: <access denied>
    Kernel driver in use: r8169
    Kernel modules: r8169

Searched a bit and got this : Qualcomm Atheros Device [168c:0042] (rev 30) Wi-Fi driver installation

Though it is mentioned for Wi-Fi connection, still thought of giving it a try. This is what I got :

alpha@alpha-Inspiron-15-3567:~$ apt-get update &&apt-get upgrade
W: chmod 0700 of directory /var/lib/apt/lists/partial failed - SetupAPTPartialDirectory (1: Operation not permitted)
E: Could not open lock file /var/lib/apt/lists/lock - open (13: Permission denied)
E: Unable to lock directory /var/lib/apt/lists/
W: Problem unlinking the file /var/cache/apt/pkgcache.bin - RemoveCaches (13: Permission denied)
W: Problem unlinking the file /var/cache/apt/srcpkgcache.bin - RemoveCaches (13: Permission denied)
E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?
alpha@alpha-Inspiron-15-3567:~$ 

Now what ?