Wifi not working in Lenovo Z-50-70 (with Linux Mint 17.1)

[adarsh_chacko]

I installed Linux Mint 17.1 in Lenovo z-50-70 but its wifi does not work properly.
I ran the following:

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lspci -nnk | grep Network

and got this as output:

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02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
    Subsystem: Lenovo Device [17aa:b736]
    Kernel driver in use: rtl8723be

What could be the problem?

[richyrich]

It looks like the correct driver is installed and being used . . can you post the output from the following terminal command:

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mintwifi

[haiabhi89]

Hi,
Just update ur linux kerenel to 3.18... I think everything should work fine.. RTL8723BE drivers are included.
Hope it works.

[Buzzsaw]

You haven't said how your wireless adapter isn't working, but I'm going to guess that it's a power saving problem, since this adapter often suffers from this in Linux.

If it is a power saving problem, the following will fix it:

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sudo apt-get install sysfsutils

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systool -v -m rtl8723be

In the output, check which power saving settings have a Y after them. It will probably be fwlps and ips. Then disable these by creating the text file:

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/etc/modprobe.d/rtl8723be.conf

Write the follow line in it (adjust as necessary):

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options rtl8723be fwlps=0 ips=0

Reboot, and see whether it's working now.

[JeremyB]

Some Lenovo's have issue with hard blocked wifi when they don't have a wireless switch, check

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rfkill list all

[tree_tree]

It looks like the correct driver is installed and being used . . can you post the output from the following terminal command:

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mintwifi

I am having a similar problem on a lenovo z70-80.

My result from

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 lspci -nnk | grep Network

is

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03:00.0 Network controller [0280]: Qualcomm Atheros Device [168c:003e] (rev 20)

and my result from

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mintwifi

is

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-------------------------
* I. scanning WIFI PCI devices...
  -- Qualcomm Atheros Device 003e (rev 20)
      ==> PCI ID = 168c:003e (rev 20)
-------------------------
* II. querying ndiswrapper...
-------------------------
* III. querying iwconfig...
eth0      no wireless extensions.

lo        no wireless extensions.

-------------------------
* IV. querying ifconfig...
eth0      Link encap:Ethernet  HWaddr 68:f7:28:76:60:36  
          inet addr:192.168.1.89  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::6af7:28ff:fe76:6036/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:21083 errors:0 dropped:0 overruns:0 frame:0
          TX packets:14431 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:17667562 (17.6 MB)  TX bytes:2551523 (2.5 MB)

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:972 errors:0 dropped:0 overruns:0 frame:0
          TX packets:972 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:98947 (98.9 KB)  TX bytes:98947 (98.9 KB)

-------------------------
* V. querying DHCP...
-------------------------
* VI. querying nslookup google.com...
Server:		192.168.1.254
Address:	192.168.1.254#53

Non-authoritative answer:
Name:	google.com
Address: 216.58.218.206

What do I need to do to get the right wifi driver?

[JeremyB]

It looks like the correct driver is installed and being used . . can you post the output from the following terminal command:

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mintwifi

I am having a similar problem on a lenovo z70-80.

My result from

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 lspci -nnk | grep Network

is

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03:00.0 Network controller [0280]: Qualcomm Atheros Device [168c:003e] (rev 20)

and my result from

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mintwifi

is

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-------------------------
* I. scanning WIFI PCI devices...
  -- Qualcomm Atheros Device 003e (rev 20)
      ==> PCI ID = 168c:003e (rev 20)
-------------------------
* II. querying ndiswrapper...
-------------------------
* III. querying iwconfig...
eth0      no wireless extensions.

lo        no wireless extensions.

-------------------------
* IV. querying ifconfig...
eth0      Link encap:Ethernet  HWaddr 68:f7:28:76:60:36  
          inet addr:192.168.1.89  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::6af7:28ff:fe76:6036/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:21083 errors:0 dropped:0 overruns:0 frame:0
          TX packets:14431 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:17667562 (17.6 MB)  TX bytes:2551523 (2.5 MB)

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:972 errors:0 dropped:0 overruns:0 frame:0
          TX packets:972 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:98947 (98.9 KB)  TX bytes:98947 (98.9 KB)

-------------------------
* V. querying DHCP...
-------------------------
* VI. querying nslookup google.com...
Server:		192.168.1.254
Address:	192.168.1.254#53

Non-authoritative answer:
Name:	google.com
Address: 216.58.218.206

What do I need to do to get the right wifi driver?

That device is fairly new to Linux, backports might get it to function but you might only be able to connect to unsecured networks

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sudo apt-get install build-essential linux-headers-generic

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wget https://www.kernel.org/pub/linux/kernel/projects/backports/2015/03/13/backports-20150313.tar.xz

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tar xvfJ backports-20150313.tar.xz

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cd backports-20150313

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make defconfig-ath10k

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make

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sudo make install

Reboot

[tree_tree]

I tried exactly what you suggested and it didn't work.

Do you think I will encounter this issuse with any form of Linux I try, (am I doomed to windows or wifi?) or do you think Ubuntu would work?

[Jrassek]

Unfortunately iam quite sure that Ubuntu won´t work cause
Linux Mint is based on Ubuntu so any driver relatet issues you experience
with Linux Mint will also be in Ubuntu.

[JeremyB]

I tried exactly what you suggested and it didn't work.

Do you think I will encounter this issuse with any form of Linux I try, (am I doomed to windows or wifi?) or do you think Ubuntu would work?

I doubt any version of Linux will work with your current wifi card at this time. You could use Linux Mint in virtual box with Windows, buy a USB wifi card like the TP-link TL-WN722N V1.1, or contact Lenovo for an Intel wifi card that will work with this computer as Lenovo's have a whitelist in BIOS and won't even boot with a unapproved wifi card in the slot