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). What are the next steps? >>> [1]: >>> https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi#about_platform_noise Cheers, Volker
