[SOLVED] Sylvia 18.3 + XFCE. No wireless networks found.

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randomrain
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[SOLVED] Sylvia 18.3 + XFCE. No wireless networks found.

Post by randomrain » Sun May 06, 2018 2:45 pm

I've been troubleshooting this issue for two days now, trying various fixes I've found online to no avail. I'm going crazy at this point so I would love some help. I'm using a Thinkpad X1 Carbon (6th gen) and dualbooting Win10 and Mint (18.3). Wifi works as intended on Win10 but neither NetworkManager nor WICD can recognize any wifi networks in Mint.

Here is output for lspci -v | grep -A 10 -i "Network Controller":

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02:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)
	Subsystem: Intel Corporation Dual Band Wireless-AC 8265
	Flags: fast devsel, IRQ 255
	Memory at ee200000 (64-bit, non-prefetchable) [disabled] [size=8K]
	Capabilities: <access denied>
I downloaded the

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iwlwifi-8265-ucode-22.361476.0
.tgz file from Intel's website (https://www.intel.com/content/www/us/en ... rking.html).

I followed the instructions on this post: viewtopic.php?t=247531
and ran

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sudo cp iwlwifi-8265-22.ucode /lib/firmware/
Followed by

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sudo apt-get install build-essential linux-headers-$(uname -r)
which gave me the following output:

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Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package linux-headers-4.15.0-20-generic
E: Couldn't find any package by glob 'linux-headers-4.15.0-20-generic'
E: Couldn't find any package by regex 'linux-headers-4.15.0-20-generic'
I downloaded the .deb file from here https://pkgs.org/download/linux-headers-4.15.0-20, ran dpkg -i and got the following output:

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(Reading database ... 317506 files and directories currently installed.)
Preparing to unpack linux-headers-4.15.0-20-generic_4.15.0-20.21~16.04.1_amd64.deb ...
Unpacking linux-headers-4.15.0-20-generic (4.15.0-20.21~16.04.1) over (4.15.0-20.21~16.04.1) ...
Setting up linux-headers-4.15.0-20-generic (4.15.0-20.21~16.04.1) ...
/etc/kernel/header_postinst.d/dkms:
ERROR (dkms apport): kernel package linux-headers-4.15.0-20-generic is not supported
Error! Bad return status for module build on kernel: 4.15.0-20-generic (x86_64)
Consult /var/lib/dkms/ndiswrapper/1.60/build/make.log for more information.

I am now burned out from trying to find a solution on my own. Can someone help me figure this out? Thank you.
Last edited by randomrain on Mon May 07, 2018 12:44 am, edited 1 time in total.

randomrain
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Joined: Sun May 06, 2018 2:00 pm

Re: Sylvia 18.3 + XFCE. No wireless networks found.

Post by randomrain » Mon May 07, 2018 12:44 am

I got it working!

When I originally posted this I was running on the 4.15.0-20 kernel. From GRUB I launched Mint from the 4.10.0-38 kernel. The 4.10 version recognizes wireless networks and works perfectly.

I'm still unsure exactly why 4.15.0-20 wouldn't recognize the networks, I assume it has to do with iwlwifi-8265-22 not being compatible with that specific kernel. If anyone knows for sure, I would appreciate an explanation.

hrmcrm
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Posts: 225
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Location: San Francisco

Re: [SOLVED] Sylvia 18.3 + XFCE. No wireless networks found.

Post by hrmcrm » Tue May 08, 2018 12:06 am

JeremyB has an explanation and work-around at viewtopic.php?f=53&t=269043&p=1466847#p1466787

It worked for me.
Howard
ThinkPads 310ED, 600E, T23, X41, X60, T61, X201, E550

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