OpenWrt/LEDE Project

  • Status New
  • Percent Complete
    0%
  • Task Type Bug Report
  • Category Kernel
  • Assigned To No-one
  • Operating System All
  • Severity High
  • Priority Very Low
  • Reported Version openwrt-19.07
  • Due in Version Undecided
  • Due Date Undecided
  • Private
Attached to Project: OpenWrt/LEDE Project
Opened by Levin - 12.01.2020

FS#2730 - TL-WR841N v8 ath79 Link Unstable

Probably related to https://bugs.openwrt.org/index.php?do=details&task_id=2216 which was reported almost a year ago. The bug is still not fixed though.

Are there any plans to fix it or will 18.06 be the last stable version for this and probably other devices?

[8451.981464] eth1: link up (100Mbps/Full duplex)
[37071.909045] eth1: link down
[37072.988861] eth1: link up (100Mbps/Full duplex)
[48492.291332] eth1: link up (10Mbps/Half duplex)
[48632.691559] eth1: link up (100Mbps/Full duplex)
[55697.449886] eth1: link down
[55698.491082] eth1: link up (100Mbps/Full duplex)
[62395.095374] eth1: link up (10Mbps/Half duplex)
[62507.411488] eth1: link up (100Mbps/Full duplex)
[62726.853998] eth1: link up (10Mbps/Half duplex)
[62732.053093] eth1: link up (100Mbps/Full duplex)
[71071.460663] eth1: link down
[71072.618285] eth1: link up (100Mbps/Full duplex)
[73435.556373] eth1: link down
[73436.597169] eth1: link up (100Mbps/Full duplex)
[73547.879987] eth1: link up (10Mbps/Half duplex)
[73558.277169] eth1: link up (100Mbps/Full duplex)
[74438.121970] eth1: link down
[74439.162824] eth1: link up (100Mbps/Full duplex)
[75341.889076] eth1: link up (10Mbps/Half duplex)
[75352.290230] eth1: link up (100Mbps/Full duplex)
[76274.772404] eth1: link down
[76275.813134] eth1: link up (100Mbps/Full duplex)

Project Manager
Baptiste Jonglez commented on 13.01.2020 16:18
Levin commented on 13.01.2020 22:09

19.07 final is running fine for almost 3 hours now with the old switch driver. No more connection drops.

The question is now, is there anybody on the OpenWRT team experienced enough with drivers to fix the issue or will you reinstate the old driver?

pmgp commented on 14.01.2020 14:52

I'm also getting this problem on the WAN side of a 841N v9 when using the tiny ath79 build.
Going back to ath9k tiny makes it go away.

But in my case it's on the WAN side, not the switch.

[    1.538053] ag71xx-mdio.1: Found an AR934X built-in switch
[    1.591382] eth0: Atheros AG71xx at 0xba000000, irq 5, mode: gmii
[    2.228506] ag71xx ag71xx.0: connected to PHY at ag71xx-mdio.1:04 [uid=004dd042, driver=Generic PHY]
[    2.238739] eth1: Atheros AG71xx at 0xb9000000, irq 4, mode: mii
Project Manager
Baptiste Jonglez commented on 14.01.2020 15:04

I just noticed that there are no factory or sysupgrade images for 19.07.0:

http://downloads.openwrt.org/releases/19.07.0/targets/ath79/tiny/ http://downloads.openwrt.org/releases/19.07.0/targets/ar71xx/tiny/

Which image are you using exactly? Self-built?

pmgp commented on 14.01.2020 15:16

@baptiste

in my case, yes, I built my images from trunk, default config with just nano added.

Levin commented on 14.01.2020 15:28

@pmgp it's also on the wan side for me but I think it might be a 5 port switch with wan being one port of that

@Baptiste Jonglez I'm also running my own image. No issues for 20h now with the old switch driver on 19.07 final

pmgp commented on 14.01.2020 15:35

@Levin

I think the 841N has two phy interfaces, the WAN is not a VLAN like for example, in the 1043ND.

Levin commented on 14.01.2020 16:21

"The Atheros AR9341 is a highly integrated and feature-rich IEEE 802.11n 2x2 2.4 GHz System-on-a-Chip (SoC) for advanced WLAN platforms. It includes a MIPS 74Kc processor, five port IEEE 802.3 Fast Ethernet Switch with MAC/PHY [...]"

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