Christopher M. Penalver, Thank you for you quick response. I have installed the daily build version of 16.04 x64 into my system and i have entered the command.
-- 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/1553044 Title: Ethernet Connection randomly disconnects after transmit queue 0 timed out Status in linux package in Ubuntu: Incomplete Bug description: Description of problem: Ethernet connection gets disconnected at random apparently without any reason. I have tried the following command to restart my ethernet connection, `sudo service network-manager restart` though it never solved the issue. Every time I have to restart my system to get the connection back. see: `http://askubuntu.com/questions/615423/ethernet-connection- randomly-disconnects-after-transmit-queue-0-timed-out` OBSERVATION: It happens more frequently when I make calls in skype or hangout. It seems that heavy usage of Ethernet is causing the disconnection. It happens in both 32bit and 64bit. Debug steps tried so far: I tried to change from `r8169` to `r8168` but never solved the problem, ethernet connection is unstable as before. $ lspci -nnk | grep -iA2 net 06:00.0 Network controller [0280]: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) [168c:002b] (rev 01) Subsystem: Lenovo Device [17aa:30a1] Kernel driver in use: ath9k<br> 07:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 02) Subsystem: Lenovo Device [17aa:392e] Kernel driver in use: r8169 $ dmesg -T | grep eth0 [Sat May 2 19:52:37 2015] r8169 0000:07:00.0: eth0: RTL8102e at 0xffffc90000348000, 88:ae:1d:3a:ec:ff, XID 04e00000 IRQ 41 [Sat May 2 19:52:45 2015] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [Sat May 2 19:52:51 2015] r8169 0000:07:00.0: eth0: link down [Sat May 2 19:52:51 2015] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [Sat May 2 19:52:51 2015] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [Sat May 2 19:52:56 2015] r8169 0000:07:00.0: eth0: link up [Sat May 2 19:52:56 2015] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready [Sat May 2 20:09:01 2015] NETDEV WATCHDOG: eth0 (r8169): transmit queue 0 timed out [Sat May 2 20:09:01 2015] r8169 0000:07:00.0: eth0: link up [Sat May 2 20:09:13 2015] r8169 0000:07:00.0: eth0: link up [Sat May 2 20:09:19 2015] r8169 0000:07:00.0: eth0: link up [Sat May 2 20:09:31 2015] r8169 0000:07:00.0: eth0: link up [Sat May 2 20:10:13 2015] r8169 0000:07:00.0: eth0: link up [Sat May 2 20:10:55 2015] r8169 0000:07:00.0: eth0: link up [Sat May 2 20:12:07 2015] r8169 0000:07:00.0: eth0: link up [Sat May 2 20:13:49 2015] r8169 0000:07:00.0: eth0: link up After the event as shown in dmesg output my connection is lost. NETDEV WATCHDOG: eth0 (r8169): transmit queue 0 timed out As a Solution to the problem: I installed kernel version `3.2.0-83-generic` manually, it solved the problem and ethernet connection is perfect. Other kernels in which ethernet connection is stable: 3.2.0-98-generic, 3.2.0-83-generic Other kernels in which ethernet connection is not stable: 4.2.0-27-generic, 4.2.0-30-generic, 3.13.0-33-generic, 3.13.0-36-generic, 3.5.0-27-generic So it seems to be related to the kernel not with my hardware nor the driver. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-4.2.0-27-generic 4.2.0-27.32~14.04.1 ProcVersionSignature: Ubuntu 4.2.0-27.32~14.04.1-generic 4.2.8-ckt1 Uname: Linux 4.2.0-27-generic i686 ApportVersion: 2.14.1-0ubuntu3.19 Architecture: i386 CurrentDesktop: Unity Date: Fri Mar 4 11:55:30 2016 InstallationDate: Installed on 2016-02-29 (3 days ago) InstallationMedia: Ubuntu 14.04.4 LTS "Trusty Tahr" - Release i386 (20160217.1) SourcePackage: linux-lts-wily UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1553044/+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
