On Mon, 2019-09-09 at 14:09 +0800, Qu Wenruo wrote: > > On 2019/9/9 下午2:00, Luciano Coelho wrote: > > Hi, > > > > On Sun, 2019-09-08 at 06:45 +0800, Qu Wenruo wrote: > > > Hi, > > > > [...] > > > Any ideas how this could happen to 3 different intel cards on two > > > different systems? (Although all running the same Arch kernel and latest > > > firmware) > > > > This really must be an environment issue. You are describing the same > > problem with different NICs (which mean different FWs are being used) > > and the same problem on Windows (which means different driver version > > being used), so it's not a new bug in either the firmware or the > > driver. > > You're completely right. I have reset and upgraded my router (an MT7621 > based router with OpenWRT) to latest OpenWRT, then the problem just went > away. Great! > It looks like, under the original environment, it's the Android phone > doing something strange. It's hard to tell, because the characteristics of the WiFi on your Android phone are very different from those on your laptop. > > Was it working properly before? Did it start happening only when you > > changed the NIC (even though you changed it back and it remained not > > working)? What else changed? > > Nothing really, so I may hit something wrong with the NIC of the router, > not all these NICs. There was probably an upgrade of OpenWRT that started causing the issue. Hard to say. > > I can't see anything hinting any issues in dmesg. Also, I'm a bit > > confused about the "5G" you mention. Does that mean that the AP is > > connected to the internet via 5G? > > Sorry for the confusion, I mean 5Ghz. Ah, I should have guessed, of course. It's just that the word 5G has a totally different meaning, hardcoded in my head, so I got confused. ;) > All tests are done in 5GHz freq (802.11ac), and iperf server is > connected by RJ45 (1Gbps) and iperf client is through wifi. > > Anyway, after resetting the router, it's now back to the ~300 mpbs range. That's great to hear! Let us know if you encounter any further issues. -- Cheers, Luca.
