Is this adapter the one installed by the manufacturer? Could you please inform the make and model of your system?
Have you tried the solution found here: noted previously by NoNewbie. We are going to branch your question as it involves Bluetooth* and this discussion is about the VHT which is related to 5.0GHz connectivity.
Bluetooth* and wireless share the same antennas and the same frequency 2.4GHz, that means that Bluetooth* connectivity can cause interference with the wireless one. Try to change the channel to one that is less crowded. The alternative is to use the 5.0GHz band to avoid interference caused when Bluetooth is active.
yes, it is installed by manufacturer - HP EliteBook 820 G2. I will try to downgrade the driver back to either my old version of Intel driver or MS provided one ...
PS: using 2,4 GHz router only ... not sure if it's applicable also for this setup ...
Since this adapter is an Original Equipment Manufacturer also known as OEM, the best recommendation is to use the drives recommended by it and in your case it is an HP's. For your convenience, here is the link to the OEM drivers: HP Customer Support - Software and Driver Downloads
Additionally, please take a look at information on this article: BLUETOOTH AND WI-FI COEXISTENCE
*Please note that this link is being offered for you convenience only and therefore, must not be viewed as endorsed by Intel Corporation as we have no participation in any of the content and services offered there.
let me try to fiddle a bit with my router settings, I think I turned this feature off in my router setup, I'll post the results ...
this is the first time I am experiencing problems with turned wifi & BT on - usually I am not using both type of connectivity at once, but u never know
thanks for advice !
even Bluetooth coexistence feature turned on in my router config did not solve the issue ... I would go for downgrade then but I am a bit disappointed ... never expected that from Intel ...
better I am working with possibility of having both kind of connectors turned ON ... as in the past, there were no issue with that ...
We would like to confirm some information and verify your settings.
1. Please download and run the Intel® System Support Utility.
2. Select to scan "everything," and run the scan while connected to your wireless network.
3. Save the report and attach it to your reply.
Note: To enable attachments, make sure to switch to the advanced editor while replying.
I am sorry for this, but as the affected notebook is a company device, it's not easy to obtain admin rights to either change the driver or run the tool suggested previously.
I'll try to speed this up & post the results asap ...
today I updated the driver to latest one - from Nov 20th, the behavior is slightly different.
Link is not flapping that much - only few drops. But download speed is cut to half - with bluetooth turned on (imagine I have to work on wifi network with BT headphones ON)
If I will turn BT off, everything will come back to normal - full download speed, no flapping.
Turning off VHT mode is also not an option here.
I will try to collect system logs via SSU tool, then I will check if I could post it here.
Only way for now is to rollback to driver from few years ago where this issue was not present.
- Do you have the option to enable Bluetooth® AMP in your adapter settings?
- What is the brand and model of your wireless router/access point?
We look forward to your SSU report. To enable attachments, make sure to switch to the advanced editor while replying.
first - yes I have BT AMP mode enabled, if BT is disabled, link is ok, if BT enabled - link is flapping is a little bit ...
with AMP disabled - it's even worse ... link flapping each 8 secs ...
I did a rollback to driver from 2014 - v 126.96.36.199 - absolutely no issue if BT is on or off ... no link flapping or performance issue ...
next - my router is from ASUS - RT-N18U - with latest official firmware.
last - this is my company device so I am limited in providing logs to you, could you please specify what logs from SSU would be helpful for you ?
Thanks a lot !