Opened 7 years ago

Closed 7 years ago

#8842 closed defect (worksforme)

LAN fails on TP-Link TL-741ND (hardware v2)

Reported by: konstantin.sharlaimov@… Owned by: developers
Priority: normal Milestone: Backfire 10.03.1
Component: kernel Version: Trunk
Keywords: Cc:


Using latest trunk on TP-Link TL-741ND (hardware version v2).

I have eth0 and wifi0 in a bridge and right after the boot I get this error in dmesg:

ar71xx-wdt: enabling watchdog timer
------------[ cut here ]------------
WARNING: at net/sched/sch_generic.c:261 0x801f0b50()
NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out
Modules linked in: ohci_hcd ledtrig_usbdev nf_nat_tftp nf_conntrack_tftp nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp ipt_MASQUERADE iptable_nat nf_nat xt_NOTRACK iptable_raw xt_state nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack ehci_hcd ipt_REJECT xt_TCPMSS ipt_LOG xt_comment xt_multiport xt_mac xt_limit iptable_mangle iptable_filter ip_tables xt_tcpudp x_tables ppp_async ath9k ath9k_common ath9k_hw ath mac80211 usbcore nls_base crc_ccitt cfg80211 compat_firmware_class compat rfkill arc4 aes_generic deflate ecb cbc pppoe pppox ppp_generic slhc leds_gpio button_hotplug gpio_buttons input_polldev input_core
Call Trace:[<8006919c>] 0x8006919c
[<8006919c>] 0x8006919c
[<8007dcb8>] 0x8007dcb8
[<801f0b50>] 0x801f0b50
[<8007dd38>] 0x8007dd38
[<801dc1d8>] 0x801dc1d8
[<801f0b50>] 0x801f0b50
[<80258198>] 0x80258198
[<80256b10>] 0x80256b10
[<802581c0>] 0x802581c0
[<801f09ec>] 0x801f09ec
[<800885c4>] 0x800885c4
[<800716e8>] 0x800716e8
[<80083700>] 0x80083700
[<800837e0>] 0x800837e0
[<8006082c>] 0x8006082c

Also this error repeats roughly every 1-4 minutes:

eth0: tx timeout
eth0: link down
eth0: link up (1000Mbps/Full duplex)

When this happens all traffic on LAN is dropped for a minute or so. WiFi however works.

I've read that setting MTU to 1400 might help but it didn't.

While monitoring the eth0 interface with tcpdump I've figured out that interface is receiving and sending packets, but sent packets don't get to the wire.

Because original TP-Link firmware works, this is probably a driver problem.

Attachments (0)

Change History (2)

comment:1 Changed 7 years ago by konstantin.sharlaimov@…

Update. The problem only occures when eth0 interface has tagged vlans attached to it. In my case eth0.2 and eth0.3. Once I remove any tagged vlans - everything works.

comment:2 Changed 7 years ago by nbd

  • Resolution set to worksforme
  • Status changed from new to closed

should be working with the current versions

Add Comment

Modify Ticket

as closed .
The resolution will be deleted. Next status will be 'reopened'.

E-mail address and user name can be saved in the Preferences.

Note: See TracTickets for help on using tickets.