+ linux-wireless Thorsten Leemhuis <linux@xxxxxxxxxxxxx> writes: > Lo! On 03.10.2017 01:40, Ryan Hsu wrote: >> On 10/01/2017 01:59 AM, Thorsten Leemhuis wrote: >>> Lo! The wifi connection of my Dell XPS13 (9360) with its QCA6174 >>> sometimes suddenly stops working since I switched to 4.14-rc2+. Every >>> time it happens, there is this error message in dmesg: >>>> ath10k_pci 0000:3a:00.0: failed to extract amsdu: -11 >>> I have to switch wifi off and on with the hotkey to reconnect. I can >>> trigger the aborts by starting a big download and waiting a few minutes. >>> Sometimes the connections aborts during normal load. Installing the >>> latest firmware didn't help. The wifi works just fine with 4.13.3. While >>> investigating this I noticed a few messages in dmesg that only appear in >>> 4.14-rc (I used 35dbba31be52): >> You do run the 4.13.3 v.s 4.14-rc with the same QCA6174 firmwrae, right? >> Just want to understand the test setup here so that I could give it >> a try myself, and in 11ac or 11n mode you're testing? > > Yup, same firmware (reproduced it with > firmware-6.bin_WLAN.RM.4.4.1-00058-QCARMSWP-1 before bisecting). And the > problem showed up with 2g and 5g networks. But while investigating it I > noticed the problem does not show up with all wifi routers. It happens > with my Fritz!Box 6490 Cable and another Fritz!Box I tried, but not with > the wifi network at work (no idea what kind of routers are installed > there; I can try to find out if it matters). > >>>> 3a:00.0 Network controller [0280]: Qualcomm Atheros QCA6174 >>>> 802.11ac Wireless Network Adapter [168c:003e] (rev 32) >> […] Would you mind do a bisect to locate the failure, please? > > Did that yesterday and it turned out it's due to commit c9353bf483d3 > (ath10k: fix napi_poll budget overflow). Reverting it on top of linux > master from yesterday made the wifi connection stable again for me. Sorry, I have not been able to follow this discussion very closely but was the conclusion? Should we should revert c9353bf483d3 for 4.14 or what? I should still have time to do that, but not much. -- Kalle Valo
