I also have issues with the 6235, i've read most of the thread which thankfully helped me in creating a more stable connection. First of all i had to uninstall every driver in order to get the original Microsoft driver running, as described above. This solved my connection drop problem, it did however result into high DPC Latency spikes whenever downloading, resulting in disturbed audio and trackpad. Something that doesn't occur on the intel drivers. So somehow intel fixed the DPC latency spikes with their drivers but still hasn't figured out how to fix the connection drop problem, which was already good with the Microsoft driver. Hopefully there will be a full solution given by intel in the near future, since i have the feeling my $1500 laptop should have a stable connection. Could it be possible to tweak the microsoft driver, so that latency spikes will lower but connection drops will be prevented?

I have the same issues, look's like a hardware problem with this bad (baaad) wifi adapter. I have an samsung NP550-AD1, and a friend bought one Asus, with the same problematic adapter.

The both notebooks have HUGE drop outs, it's impossible play any online game.

I tried revert to a microsoft driver, disabling bluetooth and ethernet devices, but it does'nt work at all.

Intel, show more respect with customers!!!

I tried to roll back to the Microsoft driver but couldn't.  The rollback button grayed out after two rolls, and no amount of rebooting would give me another.  So, I de-installed the entire Intel Proset software suite and rebooted.

It didn't get me back to a Microsoft driver, but it did get me working.  This is strange.  I am now on this driver:      Intel, date: 10/4/2012, version 15.5.6.48

I was there before, and through every iteration up to 15.6.1.20.  But now it is working fine at 15.5.6.48.  How very strange.  Is there something wrong with the Proset suite?  Of course, I am sure the WIDI is gone, but I just want to connect reliably to the Internet on my expensive Ultrabook.

Web pages seem to time out if they sit idle to long, but it is working.  Which make me thing that Intel is not trying very hard to fix this.

@douglyfresh Don't use the rollback button, use the uninstall button. If you go to page 39 of this thread look for my post (582) it has a full description of what you need to do to get back to the Microsoft driver.

I tried the various "solutions" posted here however the only thing that worked for me was using the Windows 7 64 bit driver with N mode disabled. I have an Asus Zenbook UX31A. I tried the following but nothing below worked with the Windows 8 drivers with constant dropouts every 10-30 seconds and ping tests failing.

- Disabling N mode in Driver settings

- Tried both 20MHz and Auto for N-mode band

- Decreased transmit power from maxium to medium in case there is a power issue possibly causing noise problems

- Removed Intel WiFi and Bluetooth software which monitors and tests both interfaces

- Deleting the driver and using Microsoft driver

With Windows 7 driver version 15.3.1.2  located at : ASUS ZENBOOK UX31A - Notebooks & Ultrabooks - ASUS, disabling the 802.11n mode appears to be stable. The connection bars vary frequently between 1 and 5 bars but the connection never drops. I tried walking to corners of my house, which is fairly large and this appears to be stable. My router is a D-Link DIR-655 (B version). I experimented with some settings there but none of them seemed to help. I also ran an overnight ping test to Google and was dropping about 3% of packets, which isn't bad for WiFi.

I don't consider the above a real solution because as others have mentioned, this isn't an 802.11n solution and I'm getting about 10-15Mbps lower than my WAN connection which is close to 25Mbps.

Anyone else that has this working on the ASUS Zenbook, I'm interested to hear what you did to overcome the problems and get things working.

I am on an ASUS Zenbook UX32A.

The simple method I found to resolve this issue is to just change power settings: Wireless Adapter Settings to Maximum Performance on Battery & Plugged in.

I use it with normal Wireless settings (N-mode, etc.) No dropouts whatsoever. If I switch it to Maximum Power Saving, I will get immense dropouts and Internet is unusable. This only happens with a 2.4GHz network, it works flawlessly with 5GHz network with maximum power saving. So, I want it to be on maximum power saving for more battery life, but I can't because of the issue. Otherwise, I've been running on maximum performance all the time.

Just to add some info ( I don't know if this good or not, somebody (Intel ????) should try to make sense of all the cases and nuances this post is showing).

I am using a Samsung Series 9 NP900X with Win8 x64 Pro. I connect usually to 2 different routers.

TP-Link TL-WDR3600 and TP-Link TL-WR941ND. As long as I used the originally supplied driver (15.6.1.20) everything was OK. Excellent performance and no dropouts. I received the update notification from Intel and Samsung that 15.8.0.5 was available and I updated the driver.

From that moment on, connections to the 941ND were dismal, lots of dropouts and problems. Connections to the WDR3600 remained stable and excellent.

So, I believe that part of the problem are the routers and the N mode implementation in the router by the manufacturer. The 941ND is a relatively old router and I think that the N was a draft at the time of purchase.

Obviously I reverted to 15.6.1.20 and everything if OK now. I hope that this helps somebody.

Douglyfresh posted in the previous page he removed Intel® PROSet and continued using Intel® driver.

Has anybody else tested this and obtained similar results?

Has anybody used Intel® PROSet and tested if managing WiFi with Windows* WLAN AutoConfig or Intel® PROSet makes a difference?

I have been experiencing severe issues with the N-6235 card in an HP Spectre 14-3200ea running Windows 8 (64 bit). The laptop was purchased in December 2012 and the wi-fi issue has existed since that time, therefore making it pretty much unusable (not what I had expected from a £1200 machine!)

On my 60 mb broadband connection, the maximum speed the laptop can manage is 10 mbps. As a contrast, my other HP laptop and desktop can hit >50 mbps. Signal strength in the Spectre 14 fluctuates massively, jumping continuously between 5 and 1 bars (but often settling on 1 or 2). Every potential fix listed in this forum has been tried, but to no avail. Last week, I returned the computer to an HP service centre and they reinstalled the operating system. As soon as I got home, I turned the machine on and the wi-fi worked perfectly (5 bars and 50 mbps download speed) for about 10 minutes. However, when I returned to use the laptop later in the day, the previous performance issues had resumed. Following a second visit to HP, the wi-fi card was replaced, but this had no effect whatsoever. HP now want to send of the laptop to another service centre but I don't see the point because THIS IS AN INTEL ISSUE. The lack of a solution to this problem from Intel after almost 11 months since this thread began is unbelievable.

If it means anything, my home router is a Netgear VMDG480 and is set up with WPA2.

The fastest way to resolve the issue is to print off some of these comments and ask the HP support dude to replace the card with another maker's card such as Broadcom. You may lose widi but what's more important, WiFi or widi right now? The other option is buy a cheap USB WiFi adapter for $20 or so and use that until Jo and his Intel chums pull finger and deliver working drivers OR fess up that the card itself is dead on arrival.

I replaced my card with a Broadcom myself and it works without a hitch. However, I have lost widi and the Broadcom I chose is not power efficient. But better than the Intel joke of a card I had before.

Good luck.

I tried this and it didn't work on the UX31A.  Even with my previous fix, I'm still having 3% dropped packets over 24 hours, which I can live with but performance is somewhat erratic when surfing the web.

I have an ASUS UX32VD and posted earlier in this forum.

Initially I disabled Bluetooth as someone else advised (which I also believe is alluded to on the following Amazon product page--look under where it says "Product Description" and a "known issue is mentioned), but kept the driver for the wireless adapter updated to Intel's latest.

Amazon.com: ASUS Zenbook UX32VD-DH71 1.90-3.00GHz i7-3517U 10GB 250GB SSD 1GB NVIDIA Geforce GT 620M Full HD 1080P: Computers & Accessories

This worked fine but of course meant no Bluetooth. Since I rarely use Bluetooth anyway, I was okay with it. Performance greatly increased and I didn't notice dropouts anymore, especially with streaming video (YouTube, etc.).

I then tried to rollback to the Microsoft driver as another person suggested. After doing so, I re-enabled Bluetooth and everything seemed to be going well. However, I started to experience streaming issues and dropouts again within a week.

I have now updated back to the latest Intel drivers and disabled Bluetooth. I'm sticking with that for now, until (hopefully) something better comes along in terms of a permanent solution.

Side question: I also bought a USB WiFi card that I may just give in and use to get around this. Does anyone know if I should disable the internal card entirely if I go that route? I assume I could disable the Wireless N capabilities and such but leave Bluetooth capability enabled? Or would this cause a conflict? The external card does not have Bluetooth.

Thanks,

Andy

I have a Samsung NP700Z5C-SU02B

after trying the all solutions mentioned before from disabling the n-tech to disabling bluetooth to removing the Intel PROSET and working with the microsoft driver but with no luck!!!

Yesterday, i was looking for the latest driver provided from intel in their official website, i found a solution given from intel to this garbage adapter and i followed every thing in the page specially for adapter power management to set for maximum performance!!!

for around one night i thought intel finally solve the problem, i started a download and also a ping test to the router for around 8 hours, i have got 0.43% packet loss but the download complete to the end !!! since the packet loss is very low, the download logically will complete.

the day after i started another download just for check up with the laptop unplugged to the power, after 2 hours downloading, again network error!!!!

i have windows 8 and the router support only 2.4GHs mode, but the question is how you intel expect from us when we buy your product to give up on some of the features like n-technology and Bluetooth to be able to survive with it ???!!!!!

please be more professional and save your name at least!!! 

Dear JOE could you please let me know what should we do?

I sent the laptop back to Samsung. They kept it for 10 days. Back still with the wireless problem.

Can INTEL give me a solution? (not rolling back driver or remove N or other crappy stuff)

I am tired and upset.

Maybe send us a replacement card?

Maybe inform ignorant technicians about the issue?

NP900X4C

I bought Samsumg Series 7 Chronos less 2 months ago and the laptop has Intel N-6235 install from manufacture.

Many of my co-worker has same if not similar model from Samsung and all of them are experiencing same issue.

Wifi keep dropping off after certain while. The connection becomes limited after successfully connected about 5 - 30 min and have to manually disconnect and re-connect in order to establish valid connection.

The answer provided by Intel doesn't really give any solution but only to blaming users.

Someone suggested turning off disable 802.11n Mode from driver properties and it seems it's holding connection at least for now. (been connected over 30 min without a drop)

However, Intel will have to come up with solution for this.

This is very annoying issue just to disregard.