> Hi, > > On 09/20/2016 08:22 AM, Volker Mische wrote: >> On 09/20/2016 07:39 AM, Emmanuel Grumbach wrote: >>> On Mon, Sep 19, 2016 at 5:00 PM, Volker Mische <volker.mische@xxxxxxxxx> wrote: >>>> I'm having connectivity issues with an Intel 8260 on a 2.5GHz network >>>> when using 40Mhz. I'm getting errors like >>>> >>>> Queue 2 stuck for 10000 ms. >>>> >>>> I've upgrade my system to the firmware version 21 (21.373438.0) and >>>> Kernel 4.8.0-rc6 in hope that it fixes the issue and to be able to debug >>>> the problem. >>>> >>>> I then found the page about platform noise [1]. I don't have any issue >>>> for several hours now (normally I was hitting the issue every few >>>> minutes) as I've set the cfg80211_disable_40mhz_24ghz parameter. > >>> We tried a few times to debug those, but they take a very long time to debug >>> since typically we need lots of reproductions and the firmware team >>> doesn't always >>> the time to look at the data immediately so in the end, the people who >>> reported this >>> originally went away. >>> Note that 40MHz on 2.4GHz is not an optimal configuration in crowded >>> environment, >>> but if you live in a place where you are pretty much the only one using those >>> frequencies, then, it can be beneficial. >> >> It's at home. I normally see only one other wifi (I need to check which >> frequency that one is using). >> >> >>> What you can try is to disable low power states (by using power_scheme >>> in iwlmvm) and see if it helps. >> >> I will try that. > > I've set the iwlmvm power_scheme to 1 (and allowed the 40Mhz > connection). First I thought it's good, but after a while the queue > still got stuck. Especially after waking up from a suspend (not sure if > that matters). Ok - good to know. > > What are the next steps? can you try to unplug the power cord? I had reports that said that this can help. Again, just a debug step to give us a hint of what you can be experiencing. Besides this, we need to go for firmware debugging. But as I said, don't expect this to be fast and easy. Please open a bug in bugzilla.kernel.org. CC linuxwifi@xxxxxxxxx and we will guide you there on how to provide the information we need.
