This problem is happening for the 2nd time in this same month. I am in dual boot but with completely separate SSD's for LM and Windows and it's been a while since I even booted into windows. Today after a normal shutdown, I booted as normal and found my wifi hardware is completely missing (again)?! Last time when this happened, I went to Windows and found the hardware was not listed there as well. So, I downloaded driver pack solutions and installed all missing drivers from there and after several boots the wifi card randomly appeared. Same thing happened today but no luck with the method i used before. Let me give you guys as much info as possible,
My system info:
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System: Host: suren-official Kernel: 4.10.0-42-generic x86_64 (64 bit gcc: 5.4.0)
Desktop: Cinnamon 3.6.6 (Gtk 3.18.9-1ubuntu3.3)
Distro: Linux Mint 18.3 Sylvia
Machine: System: LENOVO product: 80QA v: Lenovo E41-80
Mobo: LENOVO model: Lenovo E41-80 v: SDK0J40679 WIN
Bios: LENOVO v: D7CN30WW(V3.03) date: 04/18/2016
CPU: Dual core Intel Core i5-6200U (-HT-MCP-) cache: 3072 KB
flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 9600
clock speeds: max: 2800 MHz 1: 499 MHz 2: 499 MHz 3: 499 MHz
4: 499 MHz
Graphics: Card: Intel Sky Lake Integrated Graphics bus-ID: 00:02.0
Display Server: X.Org 1.18.4 drivers: intel (unloaded: fbdev,vesa)
Resolution: 1366x768@60.06hz
GLX Renderer: Mesa DRI Intel HD Graphics 520 (Skylake GT2)
GLX Version: 3.0 Mesa 17.0.7 Direct Rendering: Yes
Audio: Card Intel Sunrise Point-LP HD Audio
driver: snd_hda_intel bus-ID: 00:1f.3
Sound: Advanced Linux Sound Architecture v: k4.10.0-42-generic
Network: Card: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
driver: r8169 v: 2.3LK-NAPI port: 3000 bus-ID: 01:00.0
IF: enp1s0 state: down mac: <filter>
Drives: HDD Total Size: 370.1GB (51.2% used)
ID-1: /dev/sda model: Samsung_SSD_750 size: 250.1GB
ID-2: /dev/sdb model: ADATA_SP580 size: 120.0GB
Partition: ID-1: / size: 19G used: 7.7G (44%) fs: ext4 dev: /dev/sdb1
ID-2: /home size: 84G used: 11G (14%) fs: ext4 dev: /dev/sdb3
ID-3: swap-1 size: 8.19GB used: 0.00GB (0%) fs: swap dev: /dev/sdb2
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 41.0C mobo: N/A
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 217 Uptime: 8 min Memory: 1140.0/7840.4MB
Init: systemd runlevel: 5 Gcc sys: 5.4.0
Client: Shell (bash 4.3.481) inxi: 2.2.35
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Network: Card: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
driver: r8169
IF: enp1s0 state: down mac: 1c:39:47:d8:ee:06
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lo no wireless extensions.
enp1s0 no wireless extensions.
enp0s20f0u2 no wireless extensions.
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ifconfig
enp0s20f0u2 Link encap:Ethernet HWaddr 7e:30:16:ed:b8:63
inet addr:192.168.42.154 Bcast:192.168.42.255 Mask:255.255.255.0
inet6 addr: 2405:204:73c6:5aab:348c:7c1a:dcd9:14d1/64 Scope:Global
inet6 addr: 2405:204:73c6:5aab:7c4b:734a:10e8:fb64/64 Scope:Global
inet6 addr: fe80::f7ff:1c19:515d:291/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3806 errors:13 dropped:0 overruns:0 frame:13
TX packets:3654 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2224930 (2.2 MB) TX bytes:625489 (625.4 KB)
enp1s0 Link encap:Ethernet HWaddr 1c:39:47:d8:ee:06
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
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:369 errors:0 dropped:0 overruns:0 frame:0
TX packets:369 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:32337 (32.3 KB) TX bytes:32337 (32.3 KB)
Any help please guys? Thanks for your time.