Hi, On 09/21/2016 08:54 AM, Emmanuel Grumbach wrote: >> 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. Unplug without any module parameters or combined with the cfg80211_disable_40mhz_24ghz or power_scheme one? > 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. OK, will do once I did try with unplugging. I've seen previous reports on the issue. As I'm already running a Kernel compiled from source I hope that at least I can move fast :) Cheers, Volker
