OpenWrt/LEDE Project

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  • Task Type Bug Report
  • Category Base system
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  • Operating System All
  • Severity Medium
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  • Reported Version Trunk
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Attached to Project: OpenWrt/LEDE Project
Opened by Eugene Muzychenko - 08.01.2020

FS#2717 - Youku YK-L1C (MT7620A): WLAN stops working periodically

Device: Youku YK-L1C
PCB: MTO-WR976N V1.0
Chip: MT7620A ver:2 eco:6
CPU0 revision: 00019650 (MIPS 24KEc)
MIPS: YOUKU YK1

With several OpenWRT versions starting from 2018 (when I bought the router), WLAN periodically stops working after a week or after a month. Wired Ethernet ports remain working. WLAN restart does not help.

Kernel log suggests to file a bug report on rt2x00.serialmonkey.com but the site is not functioning.

The trail of the kernel log:

[ 34.827909] IPv6: ADDRCONF(NETDEV_UP): wlan0-1: link is not ready
[ 35.428393] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0-1: link becomes ready
[ 35.458300] IPv6: ADDRCONF(NETDEV_UP): wlan0-2: link is not ready
[ 36.064758] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0-2: link becomes ready
[ 36.097912] IPv6: ADDRCONF(NETDEV_UP): wlan0-3: link is not ready
[ 36.699145] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0-3: link becomes ready
[ 49.518071] random: crng init done
[ 4837.370372] ieee80211 phy0: rt2x00queue_write_tx_frame: Error - Dropping frame due to full tx queue 2
[ 5834.538102] ieee80211 phy0: rt2x00queue_write_tx_frame: Error - Dropping frame due to full tx queue 2
[ 5834.556560] ieee80211 phy0: rt2x00queue_write_tx_frame: Error - Dropping frame due to full tx queue 2
[ 5834.574974] ieee80211 phy0: rt2x00queue_write_tx_frame: Error - Dropping frame due to full tx queue 2
[60224.028009] ieee80211 phy0: rt2x00queue_write_tx_frame: Error - Dropping frame due to full tx queue 2
[83621.461506] ieee80211 phy0: rt2x00queue_write_tx_frame: Error - Dropping frame due to full tx queue 2
[83993.491441] mtk_soc_eth 10100000.ethernet eth0: port 1 link up (100Mbps/Full duplex)
[84062.284581] device wlan0 left promiscuous mode
[84062.293643] br-lan: port 2(wlan0) entered disabled state
[84062.621840] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 2 failed to flush
[84063.227188] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 2 failed to flush
[84067.508458] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[84067.575677] br-lan: port 2(wlan0) entered blocking state
[84067.586360] br-lan: port 2(wlan0) entered disabled state
[84067.597335] device wlan0 entered promiscuous mode
[84074.967563] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[84074.980512] br-lan: port 2(wlan0) entered blocking state
[84074.991139] br-lan: port 2(wlan0) entered forwarding state
[84075.018713] IPv6: ADDRCONF(NETDEV_UP): wlan0-1: link is not ready
[84076.101273] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0-1: link becomes ready
[84076.128677] IPv6: ADDRCONF(NETDEV_UP): wlan0-2: link is not ready
[84077.809446] IPv6: ADDRCONF(NETDEV_UP): wlan0-3: link is not ready
[84078.043454] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0-2: link becomes ready
[84079.829418] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0-3: link becomes ready
[84079.869727] ieee80211 phy0: rt2x00queue_write_tx_frame: Error - Arrived at non-free entry in the non-full queue 2
[84079.869727] Please file bug report to http://rt2x00.serialmonkey.com

Eugene Muzychenko commented on 08.01.2020 15:28

Sorry, forgot to mention OpenWRT release: OpenWrt 18.06.4 r7808-ef686b7292 / LuCI openwrt-18.06 branch (git-19.170.32094-4d6d8bc)

Project Manager
Daniel Golle commented on 20.03.2020 22:36

There have been quite some things fixed in rt2x00 since that release which will not be backported to 18.06. Please report back after retrying with a more recent version, ie. OpenWrt 19.07.x or a snapshot build.

Eugene Muzychenko commented on 21.03.2020 08:35

Thank you, will try. But due to quarantine measures, I'm stuck in Russia while the router is in France. :) So I will be able to try it at least in May.

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