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  • 45. Re: intel centrino advanced-n 6235 sporadic dropouts and freezing
    arun4it Community Member
    Currently Being Moderated

    I wanted to share with others how I resolved the issue. 

    I bought my Samsung Series 8 laptop in August and had the same issue listed above.

    I tried the various suggestions to set the power options etc. with the exception of installing the new driver version. Didn't want to invalidate my warranty.

     

    Called Samsung Support to see if they had a resolution for this issue and although I was a little skeptical with the solution I figured I didn't have anything to lose at this stage. 

     

    It was a simple fix and hopefully this will help others still encountering this issue to resolve it also.

     

     

    My system details:

    Windows 8 OS

    Intel Centrino Advanced-N 6235 network adapter version 15.8.0.5

     

    1. Go to the Administrator menu by pressing the Windows key (next to the alt key on the left of your keyboard)  and pressing the X key.
    2. Select Device Manager
    3. Expand Network Adapters
    4. Right mouse click on the Intel network adapter
    5. Click on Uninstall
    6. The Intel network adapter should be removed now
    7. Restart your computer (I may have totally shut down my computer and then restarted it)
    8. Repeat step 1 and 2
    9. Click on the Action menu in Device Manager
    10. I think I selected Update Driver Software (If you do not see your Intel network adapter then select Scan for hardware changes).  
    11. You should now see your Intel network adapter
    12. Press the Windows key + the i key
    13. You should see your wireless network available.
    14. Log into your network with your WEP key (hopefully you have it secured).
    15. You should be all set to enjoy your wireless network without any more disconnections.

     

    Hope this helps everyone. 

  • 46. Re: intel centrino advanced-n 6235 sporadic dropouts and freezing
    mschmid Community Member
    Currently Being Moderated

    Interesting, that some of you get it working for some time. I have the adapter built in a Dell notebook. It used to have an Atheros controller but I had it changed in favour of higher networking speed.

     

    There must be severe software problems. The radio connectivity seems to be stable, and for some seconds, I can see pings at 1ms to my servers. After a few seconds, the ping increase to more than a second echo time and after a while the network connection dies. After some seconds, it may work again at very low speed.

     

    At 5GHz, I get a stable radio connection, get an IP address and am able to ping the AP with almost no delay. But I cannot ping any other device on the net. If I configure the interface to use the router as DNS server as well, I can browse the internet at full speed.

     

    To tune some parameters or use different drivers did not yield any different result.

     

    There are no issues with external USB-WiFi adapters at all.

    There are no issues with any other WLAN devices at all.

     

    The OS is W7/64 and up to date. The firewall is off, no antvirus software anymore, no other firewall, the system checked for viruses with all (?) available online scanners.

     

    This may imply that the drivers drop packets on reception. It does not seem to be a hardware issue. There should not be such a difference in behaviour between 5GHz or 2.4GHz.

    I guess the problem is near the binding between the driver and Windows while everybody is focussed on the radio side.

  • 47. Re: intel centrino advanced-n 6235 sporadic dropouts and freezing
    qtm97 Community Member
    Currently Being Moderated

    Hi all,

     

    I have a brand new Lenovo T431s, Was having the same problem as everyone here, tried updating various drives etc.  My issue was occurring in both Windows 7 and Windows 8 and 8.1.

     

    I am a technician by trade and was appalled by the poor wireless performance out of the box.  I literally would have to be within 10ft of the router and even then sometimes the laptop JUST WOULD NOT CONNECT.

     

    I would recommend you send back the laptop (if possible) for service as the antenna cables may have detached from the wireless card as was the issue with mine. Actually one of the antennae was on the wrong connector on mine.

     

    The antenna cable ends and their connectors on the card are like extremely small buttons and you could see how they could easily become disconnected with a bump during shipping, In fact it was a bit time consuming to get them both on at the same time without one popping off.

     

    Do not attempt this fix and send back to your manufacturer for service.

  • 48. Re: intel centrino advanced-n 6235 sporadic dropouts and freezing
    instantrunoff Community Member
    Currently Being Moderated

    I've had problems maintaining connections with the Intel 6235 adapter in my Samsung Series 9 on some networks in particular, and I would often have to reset the adapter to reestablish a connection. I believe the following advanced settings has solved the problem for me:

     

    1. 802.11n Channel Width for 2.4... 20 Mhz Only
    2. Bluetooth AMP... Disabled
    3. Fat Channel Intolerant... Enabled
    4. Roaming Aggressiveness... 1. Lowest
  • 49. Re: intel centrino advanced-n 6235 sporadic dropouts and freezing
    vampyren Community Member
    Currently Being Moderated

    I personally think there is a hardware problem with this chip, i have both this and the 6205 which is pretty much the same without the bluetooth, same driver and settings works perfect with 6205. On the 6235 no matter the setting (BT disabled and even using 5GH band and disabling the 802.11n ) i get disconnected randomly. And sometimes i even cant disable/enable the wlan. The system just hangs when doing so and i have to kill the PC by holding the power button. This is on the new NUC D54250 and a fresh install of Win7 x64 so there is nothing else to blame but a bad hardware. I will throw away he 6235 and get another 6205 (for my second NUC which will go to my father).

    Seeing how bad intel is with the support i bet this problem wont go away anytime soon. There is this thread with 64 pages where others have the same issue

    Sporadic but recurring connection dropouts on an Intel 6235 wireless adapter

  • 50. Re: intel centrino advanced-n 6235 sporadic dropouts and freezing
    ixdude Community Member
    Currently Being Moderated

    Thanks

  • 51. Re: intel centrino advanced-n 6235 sporadic dropouts and freezing
    ixdude Community Member
    Currently Being Moderated

    Settings were good, dropouts reduced. However dropouts still existed. I did disabled 802.11n completely, but it was still not perfect. Surprisingly, since i mount my NUC to the wall (yesterday evening), and left that settings i stopped having dropouts. Weird.

  • 52. Re: intel centrino advanced-n 6235 sporadic dropouts and freezing
    ixdude Community Member
    Currently Being Moderated

    Ok, i have finally solved all the problems. I get rid of centrino 6235 and bought model 2230. Speed is great, no juggling in settings. OS stopped hanging.

  • 53. Re: intel centrino advanced-n 6235 sporadic dropouts and freezing
    boz Community Member
    Currently Being Moderated

    No update for 8/1 yet.  That should be available next year around this time if Intel keeps to the same turn around time.

     

    Intel´┐Ż Wi-Fi Products — TechNote: Sporadic wireless disconnects caused by data reordering issue

  • 54. Re: intel centrino advanced-n 6235 sporadic dropouts and freezing
    vampyren Community Member
    Currently Being Moderated

    Is your model 2230 still stable and working?

    I thought model 6205 was better but now it stops working almost 2 time during the day and i cant even disable/enable it. It pretty much make my NUC stop working properly, if i press disable it just tries to disable the card and keep doing that for ages and if i shutdown it wont shutdown so i have to hard reset it. Its so frustrating that none of Intel's so called highend cards work stable enough. I have a pure Win7 x64 with pretty much nothing installed except VLC and firefox.

     

    intel dont seem to care much either from what i can see :/

     

    Anyone know of a better PCI card that can fit a NUC?

    Also where do i get the Athros driver people talk about? I also have a feeling this is a software issue so maybe that could be a solution ....

  • 55. Re: intel centrino advanced-n 6235 sporadic dropouts and freezing
    theveterans Community Member
    Currently Being Moderated

    vampyren wrote:

     

     

    Anyone know of a better PCI card that can fit a NUC?

    Also where do i get the Athros driver people talk about? I also have a feeling this is a software issue so maybe that could be a solution ....

     

    I recommend the Azurewave CE123H. It's a WiFi card that uses the Broadcom BCM4352 chipset that supports 802.11 a/b/g/n/ac + Bluetooth 4.0 and as a bonus: Intel WiDi!

     

    Here's the information about the WiFi card: http://wikidevi.com/wiki/AzureWave_AW-CE123H

    Here's the list of WiDi requirements. Broadcom BCM4352 is on the list of WiDi capable WiFi cards: Support Knowledge Base

    Just use a search engine to find sellers that sell that card.

  • 56. Re: intel centrino advanced-n 6235 sporadic dropouts and freezing
    vampyren Community Member
    Currently Being Moderated

    Thanks for the suggestion but i cant find any seller in Sweden who sell this, neither Amazon/ebay UK.

    I'm also considering intel's model 2230 as well as model AC 7260.

    Even considering getting a new router ASUS RT-AC68U which is the best i can find (more or less). I have today Netgear WNDR3700 which is a great router and has been working great but some of the VPN and file sharing features of the Auus AC68U looks really nice and i could use those soon. But most importantly i need a stable WLAN card for my NUC so if you know where i could get my hands on the Azurewave CE123H please do tell.The US sites usually dont ship items like this outside US neither :-/


    ps. i google it a while and its not even listen on their main page: (is it maybe re-branded?)

    http://www.azurewave.com/Wireless_Module_1.asp

     

    Cheers

  • 57. Re: intel centrino advanced-n 6235 sporadic dropouts and freezing
    theveterans Community Member
    Currently Being Moderated

    Here's the only store I can find where they sell the Broadcom BCM4352 Azurewave CE123H card: Azurewave AW-CE123H 802.11ac/nbg WiFi+BT PCI Express Module<br> Broadcom BCM4352 / Bluetooth 4.0+3.0 HS Class II

    The seller is at California, USA. Fortunately they ship world wide, including Sweden. However, the bad news is that the shipping cost maybe higher than price of the card itself.

     

    I don't recommend the 2230 and the 7260AC right now due to driver issues. However, I found that the 7260AC really works well with ONLY reliable Wireless-AC router. If you use the 7260AC on 2.4 GHz band (regardless of N or G specs), it tends to get stuck at 2 - 11 Mbps speed at some random time after establishing a successful connection. The speed never goes back to normal until you reset the adapter. In addition, while the 7260 is stuck at snail speeds, the 5 GHz band also disappears. As of this writing, Intel doesn't have a fix for this issue yet. The 7260AC works well and doesn't have problems with 5 GHz band for both N and AC specs.

     

    That's the reason I recommend the Azurewave card since that card is used in Alienware laptops as well as some ASUS motherboards and ASUS ROG laptops. From my search for this card, there are no ongoing WiFi problems aside from not supporting Linux. (can work on OS X but not natively).

     

    Anyways, back to original topic

  • 58. Re: intel centrino advanced-n 6235 sporadic dropouts and freezing
    ixdude Community Member
    Currently Being Moderated

    Hi vampyren,

    Im using Centrino 2230 for a month and i had no single dropout or freeze, since i have installed that adapter. However it's not my primary computer and im not using it too much. It's up for few hours a day mostly for video streaming from NAS.

  • 59. Re: intel centrino advanced-n 6235 sporadic dropouts and freezing
    vampyren Community Member
    Currently Being Moderated

    Thanks for the link, as you say the total cost for that card + shipment is $145.50 which is crazy really. Atleast for now disabling the "802.11n" from the advance menu for my card seems to give me a stable connection and i read (below) that Intel is atleast acknowledging the issue and promising a fix so i will make due with my crappy 6205. both the 2230 + 7260AC cost me like 40 dollar so i will be testing these when my local shop get them in stock and hopefully Intel has put their SH*T together by then....Will still search for other shops in Sweden if i can find the Azurwave cheaper, i can always return the Intel ones. I actually returned the 6235 yesterday and kept the 6205. I dont really need any Bluetooth and its just another disturbance :-/

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