Wifi Not working after rolling back to 4.4

Questions about WIFI networks and devices
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Wifi Not working after rolling back to 4.4

Post by kartik3e » Sun Oct 15, 2017 4:35 am

Hello Guys,

After getting insanely frustrated with the odd disk usage in windows 10 and for a better need of an actual operating system that helps me work, I made the switch to linux mint.

I have been tinkering around and learning a lot.

I have Sonya installed on my system and a few days back I upgraded the kernel to 4.10 and everything was working OK, I was very happy. Though yesterday I got to know that 4.10 will be out of support from feb2018 and I didnt want to face any issues going forward as kernelupgrades are quite risky and cause system instability. As all all my hardware was working OK with 4.4 as well, I decided to roll back.

I am now running on 4.4 rev 97 though My wifi shows as unavailable :(
I have tried checking driver manager and system updates, nothing there.

PLease find my system info for reference:

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kartik@kartik-HP-Pavilion-x360-Convertible ~ $ inxi -Fxz
System:    Host: kartik-HP-Pavilion-x360-Convertible Kernel: 4.4.0-97-generic x86_64 (64 bit gcc: 5.4.0)
           Desktop: Cinnamon 3.4.6 (Gtk 3.18.9-1ubuntu3.3)
           Distro: Linux Mint 18.2 Sonya
Machine:   System: HP (portable) product: HP Pavilion x360 Convertible v: Type1ProductConfigId
           Mobo: HP model: 80D1 v: 84.28 Bios: Insyde v: F.19 date: 12/07/2015
CPU:       Dual core Intel Core i3-6100U (-HT-MCP-) cache: 3072 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 9215
           clock speeds: max: 2300 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: (unloaded: fbdev,vesa)
           Resolution: 1920x1080@60.02hz
           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: k4.4.0-97-generic
Network:   Card-1: Intel Wireless 3165 driver: iwlwifi bus-ID: 02:00.0
           IF: wlp2s0 state: down mac: <filter>
           Card-2: Realtek RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
           driver: r8169 v: 2.3LK-NAPI port: 3000 bus-ID: 03:00.0
           IF: enp3s0 state: up speed: 100 Mbps duplex: full mac: <filter>
Drives:    HDD Total Size: 1000.2GB (1.1% used)
           ID-1: /dev/sda model: HGST_HTS541010A7 size: 1000.2GB temp: 0C
Partition: ID-1: / size: 913G used: 6.3G (1%) fs: ext4 dev: /dev/sda1
           ID-2: swap-1 size: 4.21GB used: 0.00GB (0%) fs: swap dev: /dev/sda5
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 36.0C mobo: 35.0C
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 195 Uptime: 18 min Memory: 1167.7/3871.8MB
           Init: systemd runlevel: 5 Gcc sys: 5.4.0
           Client: Shell (bash 4.3.481) inxi: 2.2.35 
Some other relevent questions :
1. Should I stay on 4.4?
2. I welcome performance boost if linux kernal upgrade brings as I beleive my hardware is fairly new and would get better support in the new kernels. I understand I have to update my kernels more frequently if I dont stay on LTS. All I want is a system that works, is non buggy and is stable.

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Re: Wifi Not working after rolling back to 4.4

Post by JeremyB » Sun Oct 15, 2017 7:11 am

A couple things to try

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rfkill unblock wifi

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sudo ifconfig wlp2s0 up
If that doesn't work, see the wireless script link in my signature and post results

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Re: Wifi Not working after rolling back to 4.4

Post by kartik3e » Sun Oct 15, 2017 7:49 pm

Thanks Jeremy, I have been able to sort out my issue. Did a restart of the wireless manager through terminal and then rebooted, that sorted it out.
I understand this is not the right place, though I'd be happy if someone cleared my other doubts.

Thank again mate :)

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Re: Wifi Not working after rolling back to 4.4

Post by BG405 » Tue Oct 17, 2017 3:38 pm

I'd leave it on the 4.4 series on a "production" machine if it works OK, saves changing series when the HWE kernels reach EOL.
Dell Inspiron 1525 - LM17.3 CE 64-------------------Acer D255E 2GB - LM17.3 KDE 32
Toshiba NB305 - LM17.3 Xfce 32---------------------K7S5A Athlon 1.2GHz - LM17.3 Xfce 32 & WinXP-Pro
Acer Aspire E11 ES1-111M - LM18.2 KDE 64 ----Dell PII 350 64MB - Puppy 4.3 & Win98-SE

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