Slow WIFI

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dcombs

Slow WIFI

Post by dcombs »

Hello All !

I am also having a wifi Issue. I recently installed a dual boot system on a Lenovo Thinkpad X201. The wifi chipset is Intel® Centrino® Advanced-N 6200. The wifi is blazing fast in Windows, but slows to a crawl in Mint 17.1 xfce. I am talking about average around 35-40kb/s download speeds. I originally thought this was a firmware/driver issue, for I've had problems with Intel wifi chipsets in the past. Additionally, I tried a usb wifi adapter with a Realtek chipset, and the speeds were consistent. So I'm now thinking this is a OS/kernel issue.

I had originally installed 17 (Quinta), and had the same results. I had tried so many different things from searches I had done, I finally figured the best thing to do was a fresh install, and i downloaded and Installed 17.1.

I am not a noob, but far from being a Linux genius. I can usually resolve any issues via forum/google searches, but this time I'm stumped. I really don't want to leave Mint/Ubuntu. I've tried all the major Distros, and some of the fringe ones, but always come back to Ubuntu/Mint. I've been using Mint xfce for a couple years now, and it is by far my favorite, mostly because it has been BS free.

This time, from a suggestion I read in a post below, I tried installing kernel 3.18.1 from the instructions that are posted here: http://www.upubuntu.com/2014/12/install ... 81-in.html . This was unsucessful and I will post the output below, but first things first.

Output : sudo /usr/lib/linuxmint/mintWifi/mintWifi.py

Code: Select all

dcombs@ThinkPad-X201 ~ $ sudo /usr/lib/linuxmint/mintWifi/mintWifi.py
[sudo] password for dcombs: 
-------------------------
* I. scanning WIFI PCI devices...
  -- Intel Corporation Centrino Advanced-N 6200 (rev 35)
      ==> PCI ID = 8086:4239 (rev 35)
-------------------------
* II. querying ndiswrapper...
-------------------------
* III. querying iwconfig...
wlan0     IEEE 802.11abgn  ESSID:"HOME-7232"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: 5C:57:1A:B3:72:30   
          Bit Rate=54 Mb/s   Tx-Power=15 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on
          Link Quality=53/70  Signal level=-57 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:135   Missed beacon:0

lo        no wireless extensions.

eth0      no wireless extensions.

-------------------------
* IV. querying ifconfig...
eth0      Link encap:Ethernet  HWaddr 5c:ff:35:06:cb:08  
          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)
          Interrupt:20 Memory:f2500000-f2520000 

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:318 errors:0 dropped:0 overruns:0 frame:0
          TX packets:318 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:28582 (28.5 KB)  TX bytes:28582 (28.5 KB)

wlan0     Link encap:Ethernet  HWaddr 00:23:14:7c:7d:3c  
          inet addr:10.0.0.21  Bcast:10.0.0.255  Mask:255.255.255.0
          inet6 addr: 2601:c:3a00:982:d960:4f4a:5354:9798/64 Scope:Global
          inet6 addr: 2601:c:3a00:982:223:14ff:fe7c:7d3c/64 Scope:Global
          inet6 addr: fe80::223:14ff:fe7c:7d3c/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:7736 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6635 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:10422912 (10.4 MB)  TX bytes:737182 (737.1 KB)

-------------------------
* V. querying DHCP...
RTNETLINK answers: File exists
-------------------------
* VI. querying nslookup google.com...
Server:		75.75.75.75
Address:	75.75.75.75#53

Non-authoritative answer:
Name:	google.com
Address: 74.125.226.32
Name:	google.com
Address: 74.125.226.35
Name:	google.com
Address: 74.125.226.40
Name:	google.com
Address: 74.125.226.38
Name:	google.com
Address: 74.125.226.37
Name:	google.com
Address: 74.125.226.34
Name:	google.com
Address: 74.125.226.33
Name:	google.com
Address: 74.125.226.46
Name:	google.com
Address: 74.125.226.39
Name:	google.com
Address: 74.125.226.36
Name:	google.com
Address: 74.125.226.41

dcombs@ThinkPad-X201 ~ $
Attempt to install kernel 3.18.1

Code: Select all

dcombs@ThinkPad-X201 ~ $          cd /tmp  
dcombs@ThinkPad-X201 /tmp $          wget http://tinyurl.com/pkgovd5 -O kernel-3.18.1 
--2015-01-08 16:34:21--  http://tinyurl.com/pkgovd5
Resolving tinyurl.com (tinyurl.com)... 23.44.195.107
Connecting to tinyurl.com (tinyurl.com)|23.44.195.107|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2939 (2.9K) [text/html]
Saving to: ‘kernel-3.18.1’

100%[======================================>] 2,939       --.-K/s   in 0.005s  

2015-01-08 16:34:21 (527 KB/s) - ‘kernel-3.18.1’ saved [2939/2939]

dcombs@ThinkPad-X201 /tmp $          chmod +x kernel-3.18.1 
dcombs@ThinkPad-X201 /tmp $          sudo sh kernel-3.18.1 
[sudo] password for dcombs: 
kernel-3.18.1: 1: kernel-3.18.1: cannot open !DOCTYPE: No such file
kernel-3.18.1: 1: kernel-3.18.1: HTML: not found
kernel-3.18.1: 2: kernel-3.18.1: cannot open html: No such file
kernel-3.18.1: 3: kernel-3.18.1: cannot open head: No such file
kernel-3.18.1: 4: kernel-3.18.1: cannot open meta: No such file
kernel-3.18.1: 4: kernel-3.18.1: http-equiv=cache-control: not found
kernel-3.18.1: 5: kernel-3.18.1: cannot open meta: No such file
kernel-3.18.1: 5: kernel-3.18.1: http-equiv=cache-control: not found
kernel-3.18.1: 6: kernel-3.18.1: cannot open meta: No such file
kernel-3.18.1: 6: kernel-3.18.1: http-equiv=expires: not found
kernel-3.18.1: 7: kernel-3.18.1: cannot open meta: No such file
kernel-3.18.1: 7: kernel-3.18.1: http-equiv=pragma: not found
kernel-3.18.1: 8: kernel-3.18.1: cannot open meta: No such file
kernel-3.18.1: 8: kernel-3.18.1: http-equiv=refresh: not found
kernel-3.18.1: 9: kernel-3.18.1: cannot open script: No such file
kernel-3.18.1: 10: kernel-3.18.1: Date.now: not found
: not found.1: 10: kernel-3.18.1: 
kernel-3.18.1: 11: kernel-3.18.1: Syntax error: "(" unexpected
dcombs@ThinkPad-X201 /tmp $
Intel has a Linux driver here: http://www.intel.com/support/wireless/w ... 034398.htm . I am embarassed to admit this, but I have never had success installing .tgz files, and have never found a good tutorial. I would appreciate if someone who could point me towards a very easy to understand tutorial on how to install .tgz files. As I wrote earlier, I am not sure this is a driver issue, but after looking at the output I posted above, it concerns me some to see the driver being used was fetched from ndiswrapper. Maybe I am wrong to be concerned, and maybe the driver is the same one from Intel's page.

I would sincerely appreciate any help with this issue. I absolutely love my new laptop, and my new dual boot system, but these wifi download speeds are a deal breaker. Althogh I always have a dual boot, I boot Linux 99% of the tme, and have for several years now.

It seems many people are having this same issue,or very similar issues with their wifi, many posted, but no {SOLVED]'s. The oly difference between mine and some others is mine has never once disconnected. It's really slow, but has been reliable.

Does anyone know of a sucessful solution to this issue?????

Thanks in advanced for reading all of this and any input !!
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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panorain
Level 5
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Posts: 572
Joined: Mon Dec 16, 2013 3:21 pm

Re: Slow WIFI

Post by panorain »

If this could possibly be an easy solution try reinstalling Mint 17 Qiana / Mint 17.1 Rebecca your choice and seeing if you have the same issue. <--Don't count 13 Maya out though as it is supported until 2017.

Menu --> Administration --> Update Manager --> Linux Kernels --> look at the kernel options there. <--Install the 3.16.0-28 and see if your wireless connection is up to par.

It would be great to hear what your success or failure was. I am a noober but I would never recommend installing a kernel via wget through an unknown repo etc.

Besides with the link you provided nothing is mentioned as far as any kernel above 3.13+ http://www.intel.com/support/wireless/w ... 034398.htm

You might be stuck back in the dark ages with a 3.13+ kernel. Keep use posted if you have time.

You could also do an 'lsmod' in terminal and see if the module is loaded <--I dunno if that could help but it may.

Thanks,
Linux Mint 21.2 Victoria
Always =updatedb=
GNU/LINUX
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JeremyB
Level 21
Level 21
Posts: 13842
Joined: Fri Feb 21, 2014 8:17 am

Re: Slow WIFI

Post by JeremyB »

I doubt it is using ndiswrapper, try

Code: Select all

lspci -nnk | grep -iA2 net
It should show kernel driver in use: iwlwifi

With the iwlwifi module there is one thing to try

Code: Select all

sudo modprobe -r iwlwifi

Code: Select all

sudo modprobe iwlwifi 11n_disable=8
You will lose wifi temporarily running these commands and in the odd case that wifi doesn't come back, just reboot
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