Hi. I think you've filed this bug in the wrong place. Please file a public kernel bug here:
https://bugs.launchpad.net/ubuntu/+source/linux/+filebug Thank you, Jeff ** Information type changed from Proprietary to Public ** Project changed: dell-poweredge => linux (Ubuntu) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1914022 Title: Netdev watchdog closes link on PowerEdge R6515 Realtek BCM5720 Status in linux package in Ubuntu: New Bug description: A few months ago we got 3 Dell PowerEdge™ R6515 machines and installed Ubuntu 20.04 LTS. After a few days problems started showing on the network interface for the internal network. The network link is disconnected, and a few seconds later it is connected again. We have updated all the server firmware, checked the cables and switch but the problem persists. Digging deeper in the logs we found this in dmesg (full log in the attached file): [Sat Jan 30 09:57:07 2021] NETDEV WATCHDOG: eno2 (tg3): transmit queue 0 timed out [Sat Jan 30 09:57:07 2021] tg3 0000:c1:00.1 eno2: transmit timed out, resetting [Sat Jan 30 09:57:08 2021] tg3 0000:c1:00.1 eno2: Link is down [Sat Jan 30 09:57:12 2021] tg3 0000:c1:00.1 eno2: Link is up at 1000 Mbps, full duplex For some reason, the link is disconnected and reconnected a few seconds later. This happens randomly on all 3 servers and it does not seem to correlate with the current traffic on that interface. The problem seems to be very similar to Bug #1331513 but this happens on the up to date Ubutnu 20.04 (last updated mid last week). If you need any additional info, feel free to ask. Additional info: -------------------------------------- linux-firmware/now 1.187.8 all linux-image-5.4.0-64-generic/focal-updates,focal-updates,now 5.4.0-64.72 amd64 linux-image-generic/now 5.4.0.64.67 amd64 -------------------------------------- lspci -nnk | grep -iA2 net c1:00.0 Ethernet controller [0200]: Broadcom Inc. and subsidiaries NetXtreme BCM5720 2-port Gigabit Ethernet PCIe [14e4:165f] DeviceName: NIC1 Subsystem: Dell PowerEdge R6515/R7515 LOM [1028:08fd] -- c1:00.1 Ethernet controller [0200]: Broadcom Inc. and subsidiaries NetXtreme BCM5720 2-port Gigabit Ethernet PCIe [14e4:165f] DeviceName: NIC2 Subsystem: Dell PowerEdge R6515/R7515 LOM [1028:08fd] -------------------------------------- modinfo tg3 | grep ^version version: 3.137 -------------------------------------- lshw -C network *-network:0 description: Ethernet interface product: NetXtreme BCM5720 2-port Gigabit Ethernet PCIe vendor: Broadcom Inc. and subsidiaries physical id: 0 bus info: pci@0000:c1:00.0 logical name: eno1 version: 00 serial: 34:48:ed:ef:07:0e size: 1Gbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm vpd msi msix pciexpress bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.137 duplex=full firmware=FFV21.60.16 bc 5720-v1.39 ip=213.133.114.208 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s resources: irq:160 memory:c7030000-c703ffff memory:c7040000-c704ffff memory:c7050000-c705ffff memory:c7100000-c713ffff *-network:1 description: Ethernet interface product: NetXtreme BCM5720 2-port Gigabit Ethernet PCIe vendor: Broadcom Inc. and subsidiaries physical id: 0.1 bus info: pci@0000:c1:00.1 logical name: eno2 version: 00 serial: 34:48:ed:ef:07:0f size: 1Gbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm vpd msi msix pciexpress bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.137 duplex=full firmware=FFV21.60.16 bc 5720-v1.39 ip=10.0.1.6 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s resources: irq:163 memory:c7000000-c700ffff memory:c7010000-c701ffff memory:c7020000-c702ffff memory:c7140000-c717ffff -------------------------------- ethtool --show-offload eno2 Features for eno2: rx-checksumming: on tx-checksumming: on tx-checksum-ipv4: on tx-checksum-ip-generic: off [fixed] tx-checksum-ipv6: on tx-checksum-fcoe-crc: off [fixed] tx-checksum-sctp: off [fixed] scatter-gather: on tx-scatter-gather: on tx-scatter-gather-fraglist: off [fixed] tcp-segmentation-offload: on tx-tcp-segmentation: on tx-tcp-ecn-segmentation: on tx-tcp-mangleid-segmentation: off tx-tcp6-segmentation: on generic-segmentation-offload: on generic-receive-offload: on large-receive-offload: off [fixed] rx-vlan-offload: on [fixed] tx-vlan-offload: on [fixed] ntuple-filters: off [fixed] receive-hashing: off [fixed] highdma: on rx-vlan-filter: off [fixed] vlan-challenged: off [fixed] tx-lockless: off [fixed] netns-local: off [fixed] tx-gso-robust: off [fixed] tx-fcoe-segmentation: off [fixed] tx-gre-segmentation: off [fixed] tx-gre-csum-segmentation: off [fixed] tx-ipxip4-segmentation: off [fixed] tx-ipxip6-segmentation: off [fixed] tx-udp_tnl-segmentation: off [fixed] tx-udp_tnl-csum-segmentation: off [fixed] tx-gso-partial: off [fixed] tx-sctp-segmentation: off [fixed] tx-esp-segmentation: off [fixed] tx-udp-segmentation: off [fixed] fcoe-mtu: off [fixed] tx-nocache-copy: off loopback: off [fixed] rx-fcs: off [fixed] rx-all: off [fixed] tx-vlan-stag-hw-insert: off [fixed] rx-vlan-stag-hw-parse: off [fixed] rx-vlan-stag-filter: off [fixed] l2-fwd-offload: off [fixed] hw-tc-offload: off [fixed] esp-hw-offload: off [fixed] esp-tx-csum-hw-offload: off [fixed] rx-udp_tunnel-port-offload: off [fixed] tls-hw-tx-offload: off [fixed] tls-hw-rx-offload: off [fixed] rx-gro-hw: off [fixed] tls-hw-record: off [fixed] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1914022/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
