Unstable wifi on Lenovo with Mint 16

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hiiri

Unstable wifi on Lenovo with Mint 16

Post by hiiri »

Freshly installed 32-bit Mint 16 on Lenovo Ideapad z510. Installation went ok but wifi disappears every now and then. Sometimes reconnecting helps, sometimes it just comes back. Where can I look for the cause of the problem?

Output of mintwifi:

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I. scanning WIFI PCI devices...
  -- Intel Corporation Wireless 7260 (rev 73)
      ==> PCI ID = 8086:08b2 (rev 73)
-------------------------
* II. querying ndiswrapper...
-------------------------
* III. querying iwconfig...
wlan0     IEEE 802.11bgn  ESSID:"citta"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: 00:26:5A:32:4D:A5   
          Bit Rate=1 Mb/s   Tx-Power=0 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=70/70  Signal level=-40 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:99   Missed beacon:0

lo        no wireless extensions.

eth0      no wireless extensions.

-------------------------
* IV. querying ifconfig...
eth0      Link encap:Ethernet  HWaddr 28:d2:44:39:85:eb  
          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:45607 errors:0 dropped:0 overruns:0 frame:0
          TX packets:45607 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:5818097 (5.8 MB)  TX bytes:5818097 (5.8 MB)

wlan0     Link encap:Ethernet  HWaddr 0c:8b:fd:b4:91:78  
          inet addr:192.168.0.105  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::e8b:fdff:feb4:9178/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:425736 errors:0 dropped:0 overruns:0 frame:0
          TX packets:262568 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:610242627 (610.2 MB)  TX bytes:26810690 (26.8 MB)
Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 1 time in total.
Reason: Topic automatically closed 6 months after creation. New replies are no longer allowed.
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nicholas.alipaz

Re: Unstable wifi on Lenovo with Mint 16

Post by nicholas.alipaz »

I have a fresh install on the same machine. DId normal install and ran updates after, that is it. Same issues happening with wifi. I actually can't even get a connection on the machine for the past hour at all.
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Lingula

Post by Lingula »

FWIW that Intel wireless model (and many other Intel models) have the same problem in Windows. Limiting the connection to g works in Windows. Have you tried it in Mint?
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Lingula

Post by Lingula »

Addendum - one of the causes of such behavior has a fix:
http://marc.info/?l=linux-wireless&m=13 ... 005765&w=2
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nicholas.alipaz

Re: Unstable wifi on Lenovo with Mint 16

Post by nicholas.alipaz »

hmm, well I assumed all the z510's would have the same harware, but checking now I guess mine is different from the op, so I will open my own thread I guess. Thanks for the help, hopefully it'll resolve for him.
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speedbird

Re: Unstable wifi on Lenovo with Mint 16

Post by speedbird »

I have a Lenovo IdeaPad U430 Touch, here's the fix if you have the same card as mine (7260)

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speedbird@DeepSpace9 ~ $ inxi -N
Network:   Card-1: Intel Wireless 7260 driver: iwlwifi 
           Card-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller driver: r8169
Go To: http://wireless.kernel.org/en/users/Drivers/iwlwifi and download the appropriate version of the new firmware for your kernel, you can check your kernel version by issuing:

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speedbird@DeepSpace9 ~ $ uname --all
Linux DeepSpace9 >>>>3.11.0-12-generic<<<< #19-Ubuntu SMP Wed Oct 9 16:20:46 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
Download the appropriate file (in my case is the 3.10+ version):

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Intel® Wireless 7260
3.10+ iwlwifi-7260-ucode-22.1.7.0.tgz
3.13+ iwlwifi-7260-ucode-22.24.8.0.tgz
Untar the downloaded file, and then make a backup copy of the existing firmware file and copy the new one on top of it, reboot (or modprobe -r, but sometimes this does not work) and you'll be good to go. the location of the firmware and final setup is as follows:

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speedbird@DeepSpace9 ~ $ cd /lib/firmware/
speedbird@DeepSpace9 /lib/firmware $ ls -la | grep 7260
-rw-r--r--  1 root root  683236 Mar 18 22:03 iwlwifi-7260-7.ucode
-rw-r--r--  1 root root  682892 Jul 10  2013 iwlwifi-7260-7.ucode-ORIGINALBACKUP
speedbird@DeepSpace9 /lib/firmware $
HTH

-- sb
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