[Dell Inspiron 5420] Ethernet connection with Atheros AR8162 [1969:1090] is not stable on 12.04.5

[Po-Hsu Lin]

CID: 201202-10508 Dell Inspiron 5420

This system was certified with 12.04.2, and the Ethernet connection works fine on 12.04.2 + update (also with 12.04.3 stock image), but it's not stable on 12.04.5 (or 3.13 kernel, since it's having the same issue on 14.04 as well)

Steps:
1. Install 12.04.5 by PXE installation, boot to desktop
2. Run 'sudo apt-get update'

Expected result:
* System successfully installed, sudo apt-get update terminates normally

Actual result:
* 12.04.5 successfully installed, but while trying to run sudo apt-get update, it will stuck at the middle, you have to wait it to recover

It seem that mtr and ping command won't trigger this issue (browsing webpages will)

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.13.0-32-generic 3.13.0-32.57~precise1 [modified: boot/vmlinuz-3.13.0-32-generic]
ProcVersionSignature: Ubuntu 3.13.0-32.57~precise1-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
Date: Tue Aug 19 03:21:33 2014
InstallationMedia: Ubuntu 12.04.5 LTS "Precise Pangolin" - Release amd64 (20140807.1)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-lts-trusty
UpgradeStatus: No upgrade log present (probably fresh install)

[Po-Hsu Lin (cypressyew)]

Verified with 201202-10511 which has the same Ethernet controller, AR8162[1969:1090] (rev 08), but it doesn't have such issue.

[Po-Hsu Lin (cypressyew)]

I've installed 12.04.2 via USB on 201202-10508, and update the system to the latest 3.5 kernel (the Ethernet controller needs to be update, see bug 927782), the Ethernet connection seems working well, 'sudo apt-get update' command works like charm

I'll verify it with 13.10 later.

[Po-Hsu Lin (cypressyew)]

Verified with 13.10, this issue could be reproduced.

[Edward Lin (airken)]

Can't reproduce this bug

[Anthony Wong (anthonywong)]

@Phid, can you get the HW and try to reproduce it?

[Phidias (phidias-chiang)]

Can't reproduce this bug with 12.04.5 and 14.04.1,
kernel version: 3.13.0-32-generic #57

[Po-Hsu Lin (cypressyew)]

@Anthony
hmm... I think maybe it's just a glitch to the network in our lab, please feel free to close this bug.