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artogda
Paper Tape
Posts: 4
Registered: ‎05-22-2015
Location: poland
Views: 13,189
Message 1 of 16

lenovo y50-70 - broadcom 802.11ac

Hi guys

I have a problem with my broadcom 802.11ac wifi card on y50. I downloaded latest driver from lenovo page but max download I can get is about 10mbs. My connection is 120mb and for exampe on asus without n support I get about 40mb download speed.

 

 

Mod's Edit: System model added to Subject line to improve visibility / clarity

Retired Support Specialist
Posts: 1,226
Registered: ‎11-18-2012
Location: Egypt
Views: 13,113
Message 2 of 16

Re: broadcom 802.11ac

Dear Artogda

 

Welcome in lenovo community

 

Can you please send me you full machine model ?

 

Thanks

Alaa



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artogda
Paper Tape
Posts: 4
Registered: ‎05-22-2015
Location: poland
Views: 13,109
Message 3 of 16

Re: broadcom 802.11ac

It's lenovo y50-70 59-443090. In the same room where router is localized the download speed reaches even 50mbs. But in any other room(about 5 meters) the download downgrades to 10 mbs. My broadcom driver is 7.12.39.15.

Retired Support Specialist
Posts: 1,226
Registered: ‎11-18-2012
Location: Egypt
Views: 13,075
Message 4 of 16

Re: broadcom 802.11ac

Hi Artogda

 

Please use this link to download and install the latest update of the wifi driver,

 

Link : http://support.lenovo.com/us/en/products/laptops-and-netbooks/lenovo-y-series-laptops/y50-70-noteboo...

 

Please uninstall the existing one and install the new one .

 

Thanks

Alaa



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If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

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artogda
Paper Tape
Posts: 4
Registered: ‎05-22-2015
Location: poland
Views: 13,062
Message 5 of 16

Re: broadcom 802.11ac

Ok now I get about 17 mbs of download, but its not a big difference comparing to my asus with atheros card. I guess broadcom has a terrible weak antenna. Anyway thanks. If you know anything about broadcom's advanced settings in device manager and how to adjust them properly, let me now please.

MattnLynn
Blue Screen Again
Posts: 6
Registered: ‎08-05-2015
Location: USA
Views: 12,885
Message 6 of 16

Re: broadcom 802.11ac

I have the same issue with the Y50-70, the range and performance decrease quick as I walk away, unusable at 20 feet in another room.
fawzib
Fanfold Paper
Posts: 15
Registered: ‎01-27-2015
Location: United States
Views: 12,798
Message 7 of 16

Re: broadcom 802.11ac

same here. i have terrrible signal when i go to any other room.

 

using Broadcom 802.11ac Network Adapter. will try to replace it.

MattnLynn
Blue Screen Again
Posts: 6
Registered: ‎08-05-2015
Location: USA
Views: 12,779
Message 8 of 16

Re: broadcom 802.11ac

BTW, I had it repaired (under warranty) and they replaced the card and antenna, and it works perfectly now!
sfetrzak
Fanfold Paper
Posts: 3
Registered: ‎08-25-2015
Location: Poland
Views: 12,760
Message 9 of 16

Re: broadcom 802.11ac

I have the same problem: https://forums.lenovo.com/t5/Windows-7-Discussion/Lenovo-Y50-70-Broadcom-802-11ac-issue/td-p/2152738

 

I cannot even connect to 5GHz (80Hz) ac wifi, only 2.4 GHz 20/40. Fortunatelly my router is dual band so other devices still use 5GHz and only Lenovo y50-70 cannot see 5GHz WiFi and has to use 2.4GHz. 

 

When I use "netsh wlan show drivers" it does not show "ac": Radio supported types: 802.11n 802.11a 802.11n 802.11g 802.11b.

 

In advanced options of wifi adapter "ac" also is not mentioned, only a/b/g and 20/40 MHz.

 

The same issue is under Windows 7 x64 and Windows 10 x64.

 

Lenovo support replied to me that it is not their concern because my y50-70 didn't come with pre installed Windows and drivers from Lenovo website are not compatible with Windows installed by the user... what a b******.

arcieres
Blue Screen Again
Posts: 10
Registered: ‎04-04-2015
Location: Mexico
Views: 12,541
Message 10 of 16

Re: lenovo y50-70 - broadcom 802.11ac

I got exactly the same problem in my Broadcom 802.11ac BCM4352 Wireless Network Adapter. Near the router I dont have any problem, the wifi speed is high; but when I get away the performance of the adapter goes down extremely quickly.

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