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MM_P1
Beginner
2,583 Views

Intel(R) Dual Band Wireless-AC 8260 Speed drops, very unstable 1Mb/s

Hello,

I have issue with Intel(R) Dual Band Wireless-AC 8260 on my notebook Thinkpad P40 Yoga

OS Windows 10 x64 pro

Speed in Wifi Status window shows 3 bars only and speed drops very often from 108 Mb/s to 1 Mb/s, therefore LAN speed and internet are very slow, around 900 KB/s download and 35 KB/s upload.

I read lots of threads and i tried many possible solutions but nothing helps, my router http://www.edimax.com/edimax/merchandise/merchandise_detail/data/edimax/global/wireless_routers_n300... EDIMAX BR-6428nS V3

I tried also different channels 1,11, security setting: WPA2 (AES)

Also connecting to wifi router takes quite long. My other devices eg. phone works fine, so i think router is OK.

My temporary fix:

It is very weird, but when i bring my notebook very close to my router for 5 seconds, speed become stable 150 Mb/s sometimes 180 Mb/s, then i can go to another room and speed remains stable with green 4 bars always..., but when i restart pc, or go to sleep mode, or disconnect from wifi, speed become unstable again. Then i must again go very close to my wifi antenna for few seconds and so on...

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16 Replies
idata
Community Manager
325 Views

Hello Nafalem,

 

 

The Intel® Dual Band Wireless-AC 8260 is a WiFi adapter designed with the current standards for wireless networks, therefore, you may need to do some adjustments for it to work with older access Points/routers.

 

 

Please apply the following:

 

 

1. Download and install https://downloadcenter.intel.com/download/26346/Intel-PROSet-Wireless-Software-and-Drivers-for-Windo... Intel® PROSet/Wireless Software and Drivers for Windows® 10 [19.20.0].

 

 

2. Contact http://www.edimax.com/edimax/download/download/data/edimax/global/download/for_home/wireless_routers... Edimax* Support and make sure you are using the recommended Firmware for your Wireless router.

 

 

3. Disable the Bluetooth* component in your PC, this is normally done with a switch in the PC chassis or with a key combination.

 

 

4. Go to the Power options of you laptop, in the Advanced Settings for your Power Plan, and make sure that the Wireless Adapter is set to work at "Maximum Performance" when plugged in and on battery.

 

 

If the issue persists, please provide the following details:

 

 

- https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility Download Intel® System Support Utility, run the tool and use it to create and save a report with all sections, then add your reply to this thread and use the Advanced editor options to attach the resulting file to your post.

 

 

- Is this the adapter that came installed from factory with your PC?

 

 

Regards,

 

Jonathan.
MM_P1
Beginner
325 Views

Hello,

Intel® Dual Band Wireless-AC 8260 is a WiFi adapter driver updated to latest version but same issue.

I updated edimax router firmware to latest version but no changes at all

Attachments:

System_info.xml when speed is unstable

System_info2.xml i brought notebook for few second close to router antenna, then i returned to same distance like before and run scan.

Is this the adapter that came installed from factory with your PC?

Yes it is.

This notebook http://psref.lenovo.com/Detail/ThinkPad_P40_Yoga?M=20GQ000N%2B%2B Thikpad P40 Yoga 20GQ000NXS

idata
Community Manager
325 Views

Hello Nafalem,

 

 

We reviewed the logs you provided and if the issue persists after disabling Bluetooth* and setting Maximum performance in the power plan, then consider the following:

 

 

- Go to Device Manager, Network Adapters, select the Intel® Dual Band Wireless-AC 8260, go to the Advanced driver properties, then adjust the following settings:

 

 

802.11n Channel Width for 2.4GHz: 20 MHz only

 

HT Mode: HT mode

 

 

- You are currently using channel 1 of the 2.4 GHz band, try using a different Wireless Channel, and remove any sources of interference. As mentioned in the following document:

 

 

http://www.intel.com/content/www/us/en/support/network-and-i-o/wireless-networking/000005493.html Quick Checks to Improve or Fix Wireless Connection Issues

 

 

- We also noticed that you have some VMware Virtual Ethernet adapters, if possible, disable these devices and check if it helps.

 

 

Regards,

 

Jonathan.
MM_P1
Beginner
325 Views

Hello,

i made suggested changes in settings:

802.11n Channel Width for 2.4GHz: 20 MHz only

HT Mode: HT mode

Channel: changed from 1 to 11 (in router settings)

wmvare adaptes and bluetooth were already disabled

but it did not help, speed is slow and it is dropping

Note: Notebook is in same room as router, distance between notebook and router is less than 2 meters.

Attachments:

System_info3.xml when speed is unstable

ping 192.168.2.1 -t -l 46200

Pinging 192.168.2.1 with 46200 bytes of data:

Reply from 192.168.2.1: bytes=46200 time=933ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=1227ms TTL=64

Request timed out.

Reply from 192.168.2.1: bytes=46200 time=859ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=891ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=911ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=845ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=997ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=960ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=887ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=929ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=941ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=949ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=937ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=891ms TTL=64

Request timed out.

Reply from 192.168.2.1: bytes=46200 time=1027ms TTL=64

System_info4.xml i brought notebook for few second close to router antenna, then i returned to same distance like before and run scan. (LAN speed is stable but slower around 4 MB/s)

ping 192.168.2.1 -t -l 46200

Pinging 192.168.2.1 with 46200 bytes of data:

Reply from 192.168.2.1: bytes=46200 time=25ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=18ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=20ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=43ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=20ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=17ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=20ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=18ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=24ms TTL=64

Note: i fixed speed in first post trasfer rate unit is of course in MegaBits Mb/s not MB/s (MegaBytes)

idata
Community Manager
325 Views

Hello Nafalem,

 

 

The information found in the new logs is similar to the one in the previous ones. The signal quality is not the optimal (79% and 60%). The driver settings and power configuration are the ones recommended, also, we already discarded Bluetooth* as a possible source of interference.

 

 

At this point, we recommend you to test connectivity with other access points. This would help you determine if the situation is present only when connecting to this access point, or if the PC has issues with other WiFi networks as well.

 

 

Regards,

 

Jonathan.
MM_P1
Beginner
325 Views

Hello again,

At this moment i do not have different 802.11n router, i was doing few tests with older router http://www.tplink.com/ie/products/details/?model=TL-WR542G TL-WR542G with speed 54 Mbps 802.11g, speed on wireless adapter seems to be stable 48 - 54 Mbps, LAN transfer speed is max 2500 KB/s (~2,5 MB/s).

Both tests are made in same distance, less than 2 meters from router (http://www.edimax.com/edimax/merchandise/merchandise_detail/data/edimax/global/wireless_routers_n300... EDIMAX BR-6428nS V3).

If Throughput Booster is enabled, LAN speed is around 7300 KB/s (around 7 MB/s), adapter shows 150 Mb/s, speed rarely drops to 72000 Mb/s and remains same also after notebook sleep mode, but it dosn't go faster if i bring notebook very close to router antenna.

ping to router: around 13-21 ms, when transfer file via LAN 49-73 ms

ping 192.168.2.1 -t -l 46200

Pinging 192.168.2.1 with 46200 bytes of data:

Reply from 192.168.2.1: bytes=46200 time=13ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=15ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=21ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=15ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=14ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=15ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=14ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=53ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=63ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=49ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=56ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=61ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=45ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=63ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=73ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=57ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=67ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=49ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=52ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=53ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=53ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=56ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=55ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=53ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=42ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=40ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=65ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=29ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=40ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=37ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=39ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=51ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=42ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=45ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=44ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=44ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=44ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=33ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=51ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=56ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=45ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=54ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=55ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=12ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=13ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=10ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=13ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=14ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Ping statistics for 192.168.2.1:

Packets: Sent = 56, Received = 56, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

Minimum = 10ms, Maximum = 73ms, Average = 36ms

Notebook Trick bring close to antenna and return back:

If Throughput Booster is Disabled, LAN speed is 11400 KB/s (around 11 MB/s), adapter shows 150-180 Mb/s speed will drop to 1-6 Mb/s after notebook sleep mode. Sometimes i am able to connect with 150-180 Mb/s speed from long distance (2 meters), with same setting posted in previous post.

Anyway it is weird, why speed dosn't drop back to 6 Mbps when notebook is far from router...

ping to router: around 11-22 ms , when transfer file via LAN 27-83 ms rarely

ping 192.168.2.1 -t -l 46200

Pinging 192.168.2.1 with 46200 bytes of data:

Reply from 192.168.2.1: bytes=46200 time=22ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=15ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=14ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=14ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=13ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=12ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=30ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=12ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=18ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=18ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=14ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=13ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=17ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=13ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=11ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=35ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=16ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=15ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=86ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=16ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=15ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=19ms TTL=64

Reply from 192.168.2.1: bytes=46200 time=15ms TTL=64

Reply from 192.168.2.1: bytes=46...

idata
Community Manager
325 Views

Hello Nafalem

 

 

If the issue is present also when using a different access point, it may indicate a problem with the wireless adapter in your PC, this should be analyzed by the http://www.intel.com/content/www/us/en/support/topics/OEMs.html Computer Manufacturer Support, or their authorized service provider.

 

 

From our end, we advise you to try a clean installation, using the "Driver only" method:

 

 

1. Download https://downloadcenter.intel.com/download/26339 Intel® PROSet/Wireless Software and Drivers for IT Admins, 19.20.0. File: Wireless_19.20.0_Driver64_Win10.zip

 

2. Extract the contents of the zip file to a known location in your hard drive.

 

3. Go to Control Panel, Programs and Features and Uninstall "Intel® PROSet/Wireless Software". When prompted, choose the option to "Discard settings".

 

4. In Control Panel, Device Manager, Network Adapters, right click on the Intel® Dual Band Wireless-AC 8260 and Uninstall it. Make sure you mark the option to "Delete the driver software for this device".

 

5. Reboot the PC or scan for hardware changes, check device manager and if an older wireless driver is detected and installed, repeat the actions to uninstall and delete it as well. Repeat this process until the OS does not allow deleting the driver, or until the controller shows as Unknown Device.

 

6. Remove temporary files: Press the Windows Key + R to open the run box. Type Cleanmgr.exe. Press OK. Select the main drive, usually C:\. Check Temporary Files and uncheck everything else. Press OK.

 

7. Go to Device Manager and locate the 8260 (it may be an unknown device), select the option to install the driver and browse to the location where you extracted the driver files.

 

 

Regards,

 

Jonathan.
MM_P1
Beginner
325 Views

I followed instructions above but its same. The main problem seems to be establishing connection, but when its done, distance does not matter.

idata
Community Manager
325 Views

Hello,

 

 

We will perform additional research about this and will get back to you soon.

 

 

Regards,

 

Jonathan.
idata
Community Manager
325 Views

Hello Nafalem,

 

 

We checked with our additional resources about this situation and we advise you to try the new driver version 19.20.3.

 

 

You can install the standard version version first:

 

 

https://downloadcenter.intel.com/download/26465/Intel-PROSet-Wireless-Software-and-Drivers-for-Windo... Intel® PROSet/Wireless Software and Drivers for Windows® 10 [19.20.3]

 

 

If the issues persist, please do the driver only method, using the instructions we provided before:

 

 

https://downloadcenter.intel.com/download/26469 Intel® PROSet/Wireless Software and Drivers for IT Admins [19.20.3]

 

 

Regards,

 

Jonathan.
MM_P1
Beginner
325 Views

I tested both options, but same problem. Speed drops to 1Mbps then back to 54, 108, 1 Mbps etc.

idata
Community Manager
325 Views

Hello Nafalem,

 

 

We are sorry to hear the issue persists after the previous recommendations. Please try the following actions and let us know if the situation is resolved:

 

 

- Go the Device Manager, under network adapters, look for the Intel® Dual Band Wireless-AC 8260 and open the properties. Go to the "Power Management" tab and toggle Off the option "Allow the computer to turn off this device to save power".

 

 

- Update the BIOS of your Computer.

 

 

- Disable Fast Startup (Hybrid Boot) in Windows® 10:

 

 

http://www.tenforums.com/tutorials/4189-fast-startup-turn-off-windows-10-a.html

 

 

Note: This link is being offered for your convenience and should not be viewed as an endorsement by Intel of the content, products, or services offered there.

 

 

If the issue persists at this point, please provide a new set of SSU logs.

 

 

Regards,

 

Jonathan.
MM_P1
Beginner
325 Views

Hello,

Bios updated, unchecked "Allow the computer to turn off this device to save power", Fast Startup already disabled, but it did not help, still same problem.

idata
Community Manager
325 Views

Hello Nafalem,

 

 

We are sorry to know that the issue persists; we noticed that the log still shows a low signal strength (59%) even after trying multiple actions and changing settings related to this condition. This suggests a problem with the antenna, or the way your computer handles the wireless signal.

 

 

In this case, we strongly recommend you to contact http://support.lenovo.com/us/en/ Lenovo Support or their authorized service provider, so they can check the connection of the antennas, or if there is any other hardware issue affecting the signal quality.

 

 

Regards,

 

Jonathan.
MM_P1
Beginner
325 Views

Hello again,

i visited nearest Lenovo Service Provider, they found following issue: "one of cable connectors led to wifi module was loose or poorly connected". Now signal strength is 99% and i can connect through few walls without problems.

idata
Community Manager
325 Views

Hello Nafalem,

 

 

We are glad to know that the issue was solved after contacting the OEM support as advised, and that you are now able to connect to Wi-Fi without problems.

 

We are sure this will be very helpful for other users as well.

 

 

Regards,

 

Jonathan B.
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