There is a same question Here, But I think my problem is different so kindly provide me the solution if any one knows.
After performing this command:
#dmesg > ~/logs.txt
I found a delay here and it seems like my problem is with ACPI:
[ 36.864428] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 1533.228060] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150619/nsarguments-95)
