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Punch Card
Posts: 22
Registered: ‎08-12-2013
Location: USA
Message 1 of 10 (11,674 Views)

Wifi Speed Limited to 20 Mbps?!

This forum doesn't seem super active, probably because of the few Helix owners, but I'll post my question anyway hoping someone can confirm Woman LOL

 

My wifi speed is limited to 20 Mbps.  Whether connecting to the internet, or on my intranet.  Top of the line 802.11ac router, few feet away, no interferences, copying files to or from a PC (which is connected to the network by ethernet),  I get no more than 2.5 MB/sec.  Same location, with a 3-yr old laptop: 8-10 MB/sec.  Reboots driver update etc no difference.  Different router and location is the same.

 

The Helix reports the wifi card as 802.11a, too.  Not 802.11n or a/n 

 

Connecting the USB to ethernet lenovo adpater, I get 11 MB/sec, so close to the 100mbps limit of the adpater, that's normal.

 

Issue: well, accessing data and for example browsing pic tures on my NAS or another PC is very painful at 2 MB/sec.  At 8-10 MB/sec on my laptop it's instantaneous no pb.

 

I'm ok if it's a small cheaper 10" Atom tablet, but not so much for a $2,000 laptop/tablet.  My basic 3-yr old laptop does 5 times better.

 

Or is my Helix faulty?

 

Paper Tape
Posts: 11
Registered: ‎06-08-2013
Location: Poland
Message 2 of 10 (11,646 Views)

Re: Wifi Speed Limited to 20 Mbps?!

I second that, the Lenovo team should take a closer look at this problem.

I'm oscilating around 4MB/s, which is also slower than expected, sometimes even dropping to 2,5.

It could be a driver fault, hopefully fixable.

Punch Card
Posts: 22
Registered: ‎08-12-2013
Location: USA
Message 3 of 10 (11,625 Views)

Re: Wifi Speed Limited to 20 Mbps?!

Thanks for the post!  4 MB/sec isn't good, but it's still twice as fast as what I got ;o)  So something's wrong with mine.  All drivers up to date, so something's going on.

Bit Torrent
Posts: 958
Registered: ‎01-27-2013
Location: United States
Message 4 of 10 (11,609 Views)

Re: Wifi Speed Limited to 20 Mbps?!

Follow Intel's guide to get the maximum performance out of the WiFi adapter:

 

http://www.intel.com/support/wireless/sb/CS-030709.htm

 

Also make sure to use WPA2 Personal / AES encryption. Also enable WiFi Multimedia (WMM) on the router's QOS settings.

Lenovo Y470: i7-2670QM | 8 GB DDR3 1333 MHz RAM | Nvidia GeForce GT 550M | 500 GB 7200 RPM Seagate HDD | ASUS PCE-AC56 802.11ac Network Adapter | Windows 7 Professional 64-bit
Punch Card
Posts: 22
Registered: ‎08-12-2013
Location: USA
Message 5 of 10 (11,596 Views)

Re: Wifi Speed Limited to 20 Mbps?!

OK, so first, thank you so much.  Now I feel bad.  Besides my work laptops, this is the first time in over a decade I get a computer that I have not built myself, so I'm relatively knowledgeable — all my PCs and servers work flawlessly.  But "on my free time" I've focused my attention on troubleshooting my screen issue and CPU frequency issue, so I'll admit I did not check the driver settings besides making sure I had the latest version.

 

So it was set to the correct mode, but the settings under 802.11n was set at disabled.  Enabled it, now I get 20 MB/sec easy.

 

Now, to my defense for not looking at this earlier since it takes 5 sec, why on earth would this be set by default to disabled out of the box, and remain like that too after driver update?!  In 2013, I really don't see why they would chose to disable the 802.11n capability by default.  That is completely crazy.

Bit Torrent
Posts: 958
Registered: ‎01-27-2013
Location: United States
Message 6 of 10 (11,585 Views)

Re: Wifi Speed Limited to 20 Mbps?!

[ Edited ]

I think the reason for 802.11n being disabled by default is because people with WiFi issues (Over 700 posts!) at Intel forums have been complaining about sporadic dropouts and found the solution that works for most was to disable 802.11n mode. As such, Intel's newest drivers have them disabled by default. Do not belive what I wrote is true as this is just my speculation.

Lenovo Y470: i7-2670QM | 8 GB DDR3 1333 MHz RAM | Nvidia GeForce GT 550M | 500 GB 7200 RPM Seagate HDD | ASUS PCE-AC56 802.11ac Network Adapter | Windows 7 Professional 64-bit
Paper Tape
Posts: 11
Registered: ‎06-08-2013
Location: Poland
Message 7 of 10 (11,568 Views)

Re: Wifi Speed Limited to 20 Mbps?!

Hello again!

Where did you find that setting to enable n on the helix? I might have it disabled as well, but cannot locate it. Thanks!

Bit Torrent
Posts: 958
Registered: ‎01-27-2013
Location: United States
Message 8 of 10 (11,560 Views)

Re: Wifi Speed Limited to 20 Mbps?!

On your desktop press Windows Key + R -> Type ncpa.cpl -> right click on Intel Centrino then click properties -> click configure -> go to advanced tab and you'll see those options.

Lenovo Y470: i7-2670QM | 8 GB DDR3 1333 MHz RAM | Nvidia GeForce GT 550M | 500 GB 7200 RPM Seagate HDD | ASUS PCE-AC56 802.11ac Network Adapter | Windows 7 Professional 64-bit
What's DOS?
Posts: 2
Registered: ‎02-11-2016
Location: banglore
Message 9 of 10 (7,799 Views)

Re: Wifi Speed Limited to 20 Mbps?!

im on windwos 10 and the stuff is different
Paper Tape
Posts: 1
Registered: ‎08-18-2016
Location: BG
Message 10 of 10 (6,406 Views)

Re: Wifi Speed Limited to 20 Mbps?!

Hello! I have a Lenovo G550 for years now, and when i used to be on Windows Vista i had a download speed above 20mbps. Now, on Windows 10, I have the same issue, and i cant download with more than 20mbps. I saw the solution but i can't find the settings anywhere! I tried installing a lot of different drivers, but it's still the same. Any ideas?

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