Re: Unstable WiFi with mt76 on MT7628AN

On 04.07.2021 00:16, Rafał Miłecki wrote:

My problem is unstable WiFi (as vague as this description is). I often
experience stalls (I can't even see beacons) and sometimes some slow
downs. I started using this device about 6 hours ago and experienced 3
or 4 traffic stops with no beacons.

It may be worth mentioning I found 1 WARNING in my dmesg. I can't tell
if that has happened during any slow down / stall or not. Unforunately I
don't have symbols in my backtrace.

[ 3245.170684] ------------[ cut here ]------------
[ 3245.175434] WARNING: CPU: 0 PID: 627 at target-mipsel_24kc_musl/linux-ramips_mt76x8/mt76-2021-05-15-9d736545/mt7603/mac.c:206 0x835e44ac [mt7603e@bb8c9e4c+0x9520]
[ 3245.190168] Modules linked in: pppoe ppp_async iptable_nat xt_state xt_nat xt_conntrack xt_REDIRECT xt_MASQUERADE xt_FLOWOFFLOAD xt_CT pppox ppp_generic nf_nat nf_flow_table_hw nf_flow_table nf_conntrack mt7603e mt76 mac80211 ipt_REJECT cfg80211 xt_time xt_tcpudp xt_multiport xt_mark xt_mac xt_limit xt_comment xt_TCPMSS xt_LOG slhc nf_reject_ipv4 nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_filter ip_tables crc_ccitt compat nf_log_ipv6 nf_log_common ip6table_mangle 
ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 leds_gpio gpio_button_hotplug
[ 3245.241986] CPU: 0 PID: 627 Comm: kworker/u3:1 Not tainted 5.4.124 #0
[ 3245.248532] Workqueue: napi_workq 0x80353380
[ 3245.252871] Stack : 805a0000 834ff700 80505c80 835e44ac 00000000 00000000 00000000 00000000
[ 3245.261358]         00000000 00000000 00000000 00000000 00000000 00000001 83629bb8 985d1d7f
[ 3245.269844]         83629c50 00000000 00000000 00000000 00000038 804eb7e4 616e203a 775f6970
[ 3245.278337]         00000000 000000a1 00000000 0003cad4 00000000 83629b98 00000000 835e44ac
[ 3245.286827]         00000009 00000002 00000002 835f0000 00000003 802b8bdc 00000000 806f0000
[ 3245.295314]         ...
[ 3245.297802] Call Trace:
[ 3245.297833] [<835e44ac>] 0x835e44ac [mt7603e@bb8c9e4c+0x9520]
[ 3245.306164] [<804eb7e4>] 0x804eb7e4
[ 3245.309725] [<835e44ac>] 0x835e44ac [mt7603e@bb8c9e4c+0x9520]
[ 3245.315571] [<802b8bdc>] 0x802b8bdc
[ 3245.319131] [<80009790>] 0x80009790
[ 3245.322680] [<80009798>] 0x80009798
[ 3245.326227] [<800236d0>] 0x800236d0
[ 3245.329783] [<835e44ac>] 0x835e44ac [mt7603e@bb8c9e4c+0x9520]
[ 3245.335623] [<80023778>] 0x80023778
[ 3245.339181] [<835e44ac>] 0x835e44ac [mt7603e@bb8c9e4c+0x9520]
[ 3245.345018] [<80351c4c>] 0x80351c4c
[ 3245.348594] [<835e4644>] 0x835e4644 [mt7603e@bb8c9e4c+0x9520]
[ 3245.354440] [<835d598c>] 0x835d598c [mt76@879d366c+0x93a0]
[ 3245.360021] [<835d3538>] 0x835d3538 [mt76@879d366c+0x93a0]
[ 3245.365614] [<835e1a1c>] 0x835e1a1c [mt7603e@bb8c9e4c+0x9520]
[ 3245.371470] [<835d47d0>] 0x835d47d0 [mt76@879d366c+0x93a0]
[ 3245.377089] [<835d153c>] 0x835d153c [mt76@879d366c+0x93a0]
[ 3245.382669] [<804f0cc8>] 0x804f0cc8
[ 3245.386216] [<803533a4>] 0x803533a4
[ 3245.389786] [<803532b0>] 0x803532b0
[ 3245.393342] [<803533a4>] 0x803533a4
[ 3245.396899] [<803533c0>] 0x803533c0
[ 3245.400447] [<804ec9c0>] 0x804ec9c0
[ 3245.403988] [<8003ac64>] 0x8003ac64
[ 3245.407547] [<8003b02c>] 0x8003b02c
[ 3245.411095] [<8003aec4>] 0x8003aec4
[ 3245.414642] [<804ecbf8>] 0x804ecbf8
[ 3245.418202] [<8003aec4>] 0x8003aec4
[ 3245.421750] [<8003fd68>] 0x8003fd68
[ 3245.425298] [<8003fc30>] 0x8003fc30
[ 3245.428852] [<8003fc30>] 0x8003fc30
[ 3245.432407] [<800050b8>] 0x800050b8
[ 3245.435945]
[ 3245.437468] ---[ end trace 9c6fbf57c9d56e22 ]---