[SOLVED] No wireless on Lenovo Thinkpad T450s

philthomson · 10-07-2015, 08:26 AM

Hi all,

Trying to get my new Thinkpad T450s up and running.

Code:

# lspci | grep -i network
03:00.0 Network controller: Intel Corporation Wireless 7265 (rev 59)

I have the microcode (downloaded from Intel's website) in /lib64/firmware:

Code:

# ls /lib64/firmware/
3com  adaptec  advansys  bnx2  bnx2x  e100  iwlwifi-7265-14.ucode  iwlwifi-7265D-14.ucode  qlogic  tigon

Module is loaded:

Code:

# lsmod | grep iwlwifi
iwlwifi                75448  0
cfg80211              190856  1 iwlwifi

But ip link doesn't report the existence of the wireless device:

Code:

# ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp0s25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
    link/ether 50:7b:9d:14:66:2c brd ff:ff:ff:ff:ff:ff

iwconfig is not much help either:

Code:

# iwconfig
enp0s25   no wireless extensions.

lo        no wireless extensions.

BTW:

Code:

# uname -a
Linux think 3.12.24 #2 SMP Tue Oct 6 20:04:11 UTC 2015 x86_64 Intel(R) Core(TM) i5-5300U CPU @ 2.30GHz GenuineIntel GNU/Linux

If 'ip link' doesn't show the wireless device, then I can't configure it using wpa_supplicant or dhcpcd. What's missing that I need to get the device to show up? Should I just upgrade the kernel? Any other thoughts?

philthomson · 10-07-2015, 11:21 PM

Modprobe-ing cfg80211 solved my issue.

Ztcoracat · 10-07-2015, 11:26 PM

Hi:

Quote:

Should I just upgrade the kernel? Any other thoughts?

Installing a higher version of the kernel may/may not provide support for your wifi card.
Not sure if using the modprobe command on the driver will help or not.
Best to wait for a member that knows

http://www.computerhope.com/unix/modprobe.htm

Agreed: you need to get the device to show up and I (think) modprobe might help with that.

Is this your machine?
http://www.cnet.com/products/lenovo-...2-10ghz/specs/

What distribution are you running?

Emerson · 10-08-2015, 12:15 AM

You need to examine your dmesg, there may be an firmware version mismatch.

Kernel 3.12 is rather old indeed and may not support your wireless card, I'm using 4.2.3 myself.