1 2 Previous Next 19 Replies Latest reply on Apr 17, 2016 7:37 AM by Bulent

    Dual Band AC 7260 causes Problem in N Network

    vanteeze

      Hi,

      I've got some problems with the DualBand AC 7260 adapter in my T440p and hope that someone here is able to help:

       

      1. Network connection repeatedly is breaking down after some time > "default gateway not found"
          >> After reseting the connection everything works fine unitl the next breakdown.
               Any Ideas? Maybe related to the network mode?

       

      2. Device Manager / AC7260 / Advanced Settings only shows following options:
          802.11a, 802.11b, 802.11g, 802,11b/g, 802.11a/g, 802.11a/b/g
          >> Shouldn't there be an "ac" option?
          >> What about 802.11n support? Is "ac" n-compatible?

       

      System:

      - Lenovo T440p, Win 7 x64

      - DualBand AC 7260, Driver 16.6.0.8, HardwareID: PCI\VEN_8086&DEV_08B2&SUBSYS_C2708086

      - AP: TCom w722v, Mode: 802.11b+g+n

       

      thanks in advance,

      bg tc

        • 1. Re: Dual Band AC 7260 causes Problem in N Network
          ComputerSteve

          1. Network connection repeatedly is breaking down after some time > "default gateway not found"

              >> After reseting the connection everything works fine unitl the next breakdown.

                   Any Ideas? Maybe related to the network mode?

               Made a thread about this (https://communities.intel.com/thread/48349  its horrible........ I can't believe that Intel isn't fixing this as I said its there crappy drivers something is up.. my niece has a Broadcom Wifi card and it works fine something is up.... I have the same problem as you.. there is no resolution I no of that works the only thing I've been doing is using an Ethernet connection and not wireless.

          • 2. Re: Dual Band AC 7260 causes Problem in N Network
            joe_intel

            I am sorry for your issue.

             

            Is this issue happening when you connect at 2.4 GHz or 5 GHz?

             

            You may want to check if the router’s firmware is update, as well as its wireless and security (encryption) settings.

            Wireless Networking; How do I improve my 802.11n wireless performance?

             

            Regarding your second question, the options you see in the Advanced tab are normal; there is a discussion about this topic in the following thread: 7260 AC does not show "AC"

            • 3. Re: Dual Band AC 7260 causes Problem in N Network
              vanteeze

              I tried two different routers, both sending at 2.4GHz (as the network is also used by older devices)...

              • 4. Re: Dual Band AC 7260 causes Problem in N Network
                TimRonald

                Same problem here. After some minutes, usually half an hour or more, the internet is disconnected and Windows fixes the problem saying the default gateway was not found. Router is FRITZ!Box 7490 with Fritz!OS 06.05 Firmware, same with a Telekom Router W920V. Same problem with FRITZ!WLAN Repeater 300E, running FRITZ!OS 06.04. I also tried different channels: Channel 1, 6, 11, 13 - does not help.

                 

                It is really annoying. I wish I could change my laptop's network card, but it's not so easy. Please fix that, Intel!

                 

                If you need any more information, I'll help where I can.

                I have the Intel Wireless-N 7260 (no AC), running on Windows 7 64bit with Intel drivers from 19.07.2013, Version 16.1.1.3

                Hardware-IDs in Windows says this here in the top line:

                PCI\VEN_8086&DEV_08B2&SUBSYS_42628086&REV_73

                • 5. Re: Dual Band AC 7260 causes Problem in N Network
                  theveterans

                  You need to update your drivers to 16.10.0. Intel has done many fixes with every driver release and it eliminates most problems people used to have though it's not perfect. I used to have problems with the WiFi but with 16.8.0.6, all of my problems were fixed!

                  • 6. Re: Dual Band AC 7260 causes Problem in N Network
                    jei13

                    I have the exact same problem as the OP and TimRonald. I have a Lenovo Thinkpad Yoga S1 with Intel AC 7260. I live in Japan and have an NEC WR8700N wireless router (with latest firmware) and all the devices here at home (desktop with Broadcom wireless built into Asus motherboard, Fujitsu notebook with Qualcomm Atheros wireless, Galaxy Nexus, Nexus 7, Ipod touch) work perfectly with it and suffer from no disconnections at all. Only my Lenovo with the Intel card suffers from disconnections with the default gateway not being found. I've played around with my router settings and what's unstable are:

                    - 802.11N 5.2ghz 300mbps

                    - 802.11N 5.2ghz 150mbps

                    - 802.11N 2.4ghz 300mbps

                     

                    What's stable are:

                    - 802.11N 2.4ghz 150mbps

                    - 802.11G 2.4ghz 54mbps

                    - All of the above when HT mode is set to dsabled (which reduces the speed to 54mbps)

                     

                    The drivers I've tried so far are: 16.0, 16.1, 16.5, 16.6, 16.8 (Dell and Intel), and the latest, 16.10. I've experimented with power settings (as well as disabling discover.exe/deleting EMC Storage Connector which was preinstalled in my Lenovo notebook), but to no avail. I remember having a similar problem with an old Alienware M14X which had the Intel 6205 card in it, before I sold it. So I hope that Intel comes out with a newer driver than 16.10 really soon because I don't want to keep my Lenovo crippled in wireless speed forever. And I'm not really in the mood to spend more cash on a new router with the possibility the my Intel wireless card will still suffer from disconnects.

                    • 7. Re: Dual Band AC 7260 causes Problem in N Network
                      theveterans

                      WiFi is complicated since mine works perfectly at both bands, regardless of channel width with 16.8.0.6 Dell drivers without changing the default settings whatsoever. It might be that recent Windows updates or manufacturer's proprietary drivers and software have somehow conflicted with WiFi N but I'm just speculating. I used to have speed problems with 7260 N WiFi (never had disconnections though) but since 3 months ago it has been working like it should in the first place. I've been connected to WiFi with my laptop for 9 1/2 days and counting and it has never given me problems at all since the dell drivers and January 2014 windows updates were released.

                      • 8. Re: Dual Band AC 7260 causes Problem in N Network
                        jei13

                        Well, unfortunately I am still experiencing the same 'default gateway is not available' (with windows diagnose 'reset the wifi adapter' fixing it) internet disconnections with the latest intel 17.0.x driver. It happens around every 30 minutes to a couple of hours. Yeah, wifi is complicated, and my router might be a cause, but I wonder why it is still just my intel card experiencing this and not my other devices with non-intel wireless.

                        • 10. Re: Dual Band AC 7260 causes Problem in N Network
                          theveterans

                          jei13 wrote:

                           

                          Well, unfortunately I am still experiencing the same 'default gateway is not available' (with windows diagnose 'reset the wifi adapter' fixing it) internet disconnections with the latest intel 17.0.x driver. It happens around every 30 minutes to a couple of hours. Yeah, wifi is complicated, and my router might be a cause, but I wonder why it is still just my intel card experiencing this and not my other devices with non-intel wireless.

                          Maybe it's just that your Intel card is defective (most unlikely) or some combination of drivers (not just the proset drivers), OS and hardware configuration. I have a cheap $25 Netgear router with 4 android phones, 1 wireless printer and 4 laptops (mine with 3 other laptops with Broadcom and Ralink WiFi) connected all time. All of my devices work properly and my laptop with Intel 7260N connects fine indefinitely and it's still running perfect after 13 days and counting of uninterrupted WiFi. If you have Windows 7, try to setup a dual boot and see if WiFi is fixed with 7. These WiFi problems started to increase a lot with 8 and 8.1 and Intel's Windows 7 drivers seems better than the 8 and 8.1 versions.

                          Capture.JPG

                          • 11. Re: Dual Band AC 7260 causes Problem in N Network
                            TimRonald

                            I've now tried Wireless_16.10.0_Ds64.exe (that's the drivers only version for Windows 7 64bit) since March 22nd 2014 and it has worked like a charm since.

                            I've successfully downloaded Gigabytes, connected to various Routers and AccessPoints and never had a single interruption since. Drivers are in default state (HT Modus not deactivated, just everything default).

                            Driver date says 28.01.2014

                            Driver Version says 16.10.0.5

                             

                            So if anyone still has any disconnection issues ("default gateway is not available"), maybe try out this driver version. Maybe you can still find it on the Intel Website, else I have uploaded it here splitted in 2 files.

                             

                            I won't update drivers now.. Never change a running system.

                             

                            @ Thanks for the tip. In the past, driver updates were not successful, but this was a good one.

                             

                            edit: typo

                            • 12. Re: Dual Band AC 7260 causes Problem in N Network
                              joe_intel

                              Thank you TimRonald!

                               

                              It is also possible to get different driver versions from the link below. It is just necessary to make sure it applies to the wireless adapter.

                               

                              Intel� PROSet/Wireless Software; Intel� PROSet/Wireless Software downloads

                               

                              Intel� Wi-Fi Products; Intel� PROSet/Wireless Software driver versions by operating system

                               

                              For the ones who are still having connectivity issues: We would like to know if you get events with the IDs 5007 and 5055 in the Windows* Event Viewer (Control Panel, Administrative Tools) at the time the issue occurs. Kindly share the details from those events if available.

                              • 13. Re: Dual Band AC 7260 causes Problem in N Network
                                MDT

                                Hello Joe, I am still experiencing errors with the AC7260 card in my Lenovo ThinkPad Yoga after installing the 17.0.0 driver.  Laptop is running Windows 8.1 64-bit.  SIU Ref: 0248 4339.  Router is Netgear WNDR3700  w/ firmware version V1.0.7.98NA.

                                 

                                Symptoms are similar to what others have reported on this an related threads:

                                 

                                • wireless networking works for some period of time after reboot/shutdown or disabling/enabling wireless adapter
                                • after some time (varies, though typically 30 min or so for me), network comes to a crawl.
                                • other devices on the network are affected at the same time.
                                • as soon as the AC7260 is disabled, other devices on the network start working normally

                                 

                                I checked the event viewer and did not see either 5007 or 5055

                                 

                                Happy to provide any additional info that would be helpful.

                                • 14. Re: Dual Band AC 7260 causes Problem in N Network
                                  theveterans

                                  Definitely something is interfering with the drivers on your laptop. I get ZERO issues (can keep connected indefinitely, no ping spikes, 180 Mbps throughput on the N connection) with 7260 on N and AC routers. I believe Intel's drivers isn't the cause of the issue since it doesn't happen to everyone who has this WiFi. In fact, it's probably less than 1% of laptops sold with 7260 that has your issue. To clear these driver conflicts with your installed software, do a dual boot system and test and see if the cleaned installed partition will give any WiFi problems. I clean installed my laptop when I first got it to avoid these glitches.

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