I've installed Linux Mint 18.2 on my ThinkPad E470. I can't connect to wifi as no wireless option shows up. I searched around and found an old post with the exact problems as mine - https://ubuntuforums.org/showthread.php?t=2187780. But the solution to it is old and doesn't work for the new linux. And, lspci doesn't list my wifi adapter model. I also tried the solution given by Pilot6(Can't post the link as i have an upper limit on no. of links). But it doesn't work. This is the output of
lspci -knn | grep Net -A2. https://pastebin.com/mMa6465h
04:00.0 Ethernet controller : Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10) Subsystem: Lenovo RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [17aa:505b] Kernel driver in use: r8169 Kernel modules: r8169 05:00.0 Network controller : Realtek Semiconductor Co., Ltd. Device [10ec:c821] Subsystem: Lenovo Device [17aa:c024]
Please guide further.