Comment 0 for bug 1447664

The tg3 broadcom network driver that binds with chipset 5762 goes offline and unable to recover (even with tg3 watchdog timeout) network when tx is under high load. Then this happens, only a reboot would be able to fix it. Sometimes, however, bringing the interface offline and online (via ifconfig) would recover networking. I've also tested with the latest tg3 driver (dec 2014 version) and networking is still problematic. I have also disabled TSO, GSO etc... with ethtool and the bug still surfaces. This bug may be related to the integrated Firmware. Thank you

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-3.19.0-15-generic 3.19.0-15.15
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
 /dev/snd/controlC1: kubuntu 3748 F.... pulseaudio
 /dev/snd/controlC0: kubuntu 3748 F.... pulseaudio
CasperVersion: 1.360
Date: Thu Apr 23 11:16:24 2015
 eth0 no wireless extensions.

 lo no wireless extensions.
LiveMediaBuild: Kubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: Hewlett-Packard HP EliteDesk 705 G1 MT
 PATH=(custom, no user)
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/hostname.seed boot=casper maybe-ubiquity quiet splash ---
 Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
 No PulseAudio daemon running, or not running as session daemon.
 linux-restricted-modules-3.19.0-15-generic N/A
 linux-backports-modules-3.19.0-15-generic N/A
 linux-firmware 1.143

SourcePackage: linux
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install) 10/22/2014
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: L06 v02.15
dmi.board.asset.tag: 2UA5041TG4 2215
dmi.board.vendor: Hewlett-Packard
dmi.chassis.asset.tag: 2UA5041TG4
dmi.chassis.type: 6
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvrL06v02.15:bd10/22/2014:svnHewlett-Packard:pnHPEliteDesk705G1MT:pvr:rvnHewlett-Packard:rn2215:rvr:cvnHewlett-Packard:ct6:cvr: HP EliteDesk 705 G1 MT
dmi.sys.vendor: Hewlett-Packard