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2 Posts

01-19-2015

California

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  • Message 11 of 30

Re: Yoga Pro 3 - Wifi dropped connections; refuses to reconnect

2015-01-19, 16:10 PM
Where do we find this information?

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2 Posts

03-05-2015

montreal canada

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  • Message 12 of 30

Re: Yoga Pro 3 - Wifi dropped connections; refuses to reconnect

2015-03-05, 21:24 PM

I have the same problem, the yoga wa sent and repaired at the lenovo service center but the problem continues...

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5 Posts

04-25-2015

Israel

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  • Message 13 of 30

Re: Yoga Pro 3 - Wifi dropped connections; refuses to reconnect

2015-04-25, 15:11 PM

Hello all, bought my Yoga 3 Pro 13" few days ago and I aso have wifi signal issues and mouse issues. I went to twitter and wrote to Intel and Lenovo asking what Intel wifi card I could buy that would work and Intel aswered that Lenovo has to tell me but no reply yet from Lenovo. I have attached pictures of the wifi card that came with my Yoga 3 pro when I bought it. Anyone that have changed the wifi card and got it working then please tell me exactly what card you bought. Thx1.jpg

1.jpg

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5434 Posts

04-25-2008

United States of America

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  • Message 14 of 30

Re: Yoga Pro 3 - Wifi dropped connections; refuses to reconnect

2015-04-25, 15:13 PM
USB-C: Just cos it fits don't mean it works.
I don't work for Lenovo. I'm a crazy volunteer!
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8 Posts

06-23-2015

United Kingdom of Great Britain and Northern Ireland

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  • Message 15 of 30

Re: Yoga Pro 3 - Wifi dropped connections; refuses to reconnect

2015-06-23, 11:01 AM

I have a similar problem, that is also repeatable on either of two lower-rate access points (one 802.11.a/b/g, the other 802.11b/g/n and also in a rural setting with no interference from other WiFi and no authentication turned on. Same broadcom bcm4352 WiFi adapter on a Yoga 3 Pro, but I'm using Linux.

 

I have posted numerous graphs of ping outages over time, and diagnosed the problem in great detail using the wireshark packet sniffer on this forum thread here: <http://ubuntuforums.org/showthread.php?t=2283001>.

 

So far my diagnosis is that the Y3P somehow stops hearing incoming signals during the dead periods. Packet sniffing shows that the access point is receiving ping requests and returning ping replies, but the Y3P isn't hearing the ping replies. SImilarly, the Y3P is transmitting other packets (e.g. trying to open TCP connections etc), but not hearing the transmission of the acknowledgements that the access router is forwarding back to it as they come in from the Internet.

 

This causes other problems, because any machine regularly expires its address resolution protocol (ARP) cache (every 30secs in Linux). When it does, it then broadcasts a request for the Ethernet address of the router, but it doesn't hear the reply. This makes it stop even trying to send anything except broadcasts (because it doesn't know the Ethernet address of the router to send to any more), which compounds the problem. However, not sending is a symptom - the cause is initially not receiving.

 

During the outages, the access point continues to forward traffic for other machines fine.

 

Then suddenly the Y3P starts hearing again, and everything is ok. Sometimes it can take tens of minutes or even an hour. But you can force it to stop black-holing by disconnecting and re-connecting to the access point. This is a difference from your case, but it may be because I'm using Linux not Windows.

 

I can still boot my machine into Windows 8.1 as well, and I have not seen any problems, altho I have not used Windows over WiFi on it for more than a few hours.

 

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3 Posts

12-20-2014

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  • Message 16 of 30

Re: Yoga Pro 3 - Wifi dropped connections; refuses to reconnect

2015-06-23, 18:27 PM
Hey Bob - I've had the exact same issue with the Broadcom wireless card on windows 8.1 on my Y3P. If I waited long enough eventually it would start working again but the quicker fix was to disconnect and reconnect to the AP.

I replaced my Broadcom card with an Intel 7265 about a week ago and haven't had that issue since.

I got mine from amazon here: https://www.amazon.com/Authentic-7265NGW-Wireless-AC-802-11ac-Bluetooth/dp/B00STV5UKW/ref=cm_sw_em_r_awdtod_QnAIvb0CNAXYQ_tt
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2 Posts

03-05-2015

montreal canada

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  • Message 17 of 30

Re: Yoga Pro 3 - Wifi dropped connections; refuses to reconnect

2015-06-23, 18:28 PM
Since I am in windows 2010 the issue is solved
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1 Posts

06-24-2015

nottingham

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  • Message 18 of 30

Re: Yoga Pro 3 - Wifi dropped connections; refuses to reconnect

2015-06-24, 8:04 AM

I am experiencing the same problem with my yoga 3 intermittent wireless connection. I have tried an external usb wireless and am still experiencing the same problem. Personally I think the problems is with a particular software that is running that is causing the issue. I had the same problem a year ago with my samsung laptop and by chance found that the ati graphic card software was the issue once i removed the ati control panel I never had the problem again. If you do a fresh installation from a windows 8.1 usb without any lenovo software I am 100% sure you will not experience any problems with the wifi. I am still trying to workout which particular software is causing the issue.  Once I find it I will post it.

 

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8 Posts

06-23-2015

United Kingdom of Great Britain and Northern Ireland

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  • Message 19 of 30

Re: Yoga Pro 3 - Wifi dropped connections; refuses to reconnect

2015-06-26, 9:36 AM

I have found that Win8.1 is solid with the Broadcom bcm4352 802.11ac adapter, at least on my Yoga 3 Pro, which I can dual boot into either Win8.1 or Linux. In contrast, Broadcom's proprietary Linux driver doesn't seem to adapt down its rate when signal quality gets poor, so it only has a very short range (only 5.5m for my 802.11n access point or about 10m when I manually downgrade the access point to 802.11g). See the table in this posting of mine comparing the drivers for the Broadcom bcm4352 in Linux Ubuntu 14.04 LTS and in Win8.1.

So I don't know what other problems you guys are finding on Windows. It might be worth running ping -t <ap-ip> where <ap-ip> is the IP address of your access point, which you can get from ipconfig. Then take your Yoga for a wander and see whether the problem is range-related. (You can stop the ping with <CTRL>+C)

Like @Paper Tape, I'm going to replace the Broadcom adapter with the Intel one.

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1 Posts

07-07-2015

Australia

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  • Message 20 of 30

Re: Yoga Pro 3 - Wifi dropped connections; refuses to reconnect

2015-07-07, 11:55 AM

I was experiencing the same issue.  I reinstalled Windows 8.1 from scratch (using USB) without any Lenovo software and this did not fix the issue.

 

I installed "Driver Booster 3" to find an updated driver (http://www.majorgeeks.com/files/details/driver_booster_3.html) and installed the one that came up in the list of driver updates.  This has dramatically improved the speed and stability of my wifi connection. 

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