Hi, On Mon, Apr 11, 2016 at 5:09 PM, Johann Haarhoff <[email protected]> wrote: > > Hi > > (Please CC as I am not subscribed to the list) > > I'm seeing the following trace on a Lenovo Yoga 2 Pro with an Intel 7260 (rev > 6b). > > Kernel is 4.5 on using the latest -16 firmware from wireless.wiki.kernel.org. > I tried the -17 firmware from git.kernel.org with a > very similar result. > > module was loaded with: > > options iwlwifi power_save=0 bt_coex_active=0 swcrypto=1
Can you try: options iwlmvm power_scheme=1 > > The trace is accompanied by a couple seconds where no data transfer can > happen (youtube stutters etc.), but other than that it seems > to resume fine. This happens every 2-15 minutes if I am moving data. > > Disabling 11n fixes the problem, but that is not really an viable option. That can help to know where the problem hides. > > Please let me know if there is anything I can add to help with the debugging. > > > Apr 11 15:52:30 kernel: [13827.165868] iwlwifi 0000:01:00.0: Queue 2 stuck > > for 10000 ms. > > Apr 11 15:52:30 kernel: [13827.165878] iwlwifi 0000:01:00.0: Current SW > > read_ptr 135 write_ptr 171 Meh... So what happens here is that the firmware is stuck while transmitting. The driver detects this and as a workaround, resets the firmware. The detection takes 10 seconds. The only way to understand what is going on here is to take the firmware from [1] and to run the steps to collect firmware debug data from [2]. I recommend you open a bug on bugzilla. Out of curiosity, did you try to work in DC mode (on battery, not connected to the power)? A user reported that it helped [3]. [1] https://bugzilla.kernel.org/attachment.cgi?id=208381 [2] https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi/debugging#firmware_debugging [3] https://bugzilla.kernel.org/show_bug.cgi?id=112931 > > > Thanks, > > Johann > -- > To unsubscribe from this list: send the line "unsubscribe linux-wireless" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
