alx module not working correctly

[Enrico Marongiu]

Since when I upgraded from kernel linux-image-extra-3.19.0-16, alx module stopped working correctly.
a ping to a reachable host results in ~50% packet loss.
Dmesg reports this:

[ 336.763660] alx 0000:02:00.0 eth0: fatal interrupt 0x400, resetting
[ 336.765816] alx 0000:02:00.0 eth0: NIC Up: 100 Mbps Full
[ 372.883211] alx 0000:02:00.0 eth0: fatal interrupt 0x400, resetting
[ 372.888582] alx 0000:02:00.0 eth0: NIC Up: 100 Mbps Full
[ 414.519237] alx 0000:02:00.0 eth0: fatal interrupt 0x400, resetting
[ 414.521448] alx 0000:02:00.0 eth0: NIC Up: 100 Mbps Full

With kernel linux-image-extra-3.19.0-16 everything works fine.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-extra-3.19.0-21-generic 3.19.0-21.21
ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3
Uname: Linux 3.19.0-16-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: cernio 2994 F.... pulseaudio
 /dev/snd/controlC1: cernio 2994 F.... pulseaudio
Date: Mon Jun 29 10:02:42 2015
HibernationDevice: RESUME=UUID=437ac68c-76ff-428e-bd50-2010ba6942a5
InstallationDate: Installed on 2013-06-06 (752 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
IwConfig:
 eth0 no wireless extensions.

 lo no wireless extensions.
MachineType: Hewlett-Packard HP Elite 7500 Series MT
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-16-generic root=UUID=3b531c07-650c-4606-a86a-a7bf55d6af98 ro quiet splash vt.handoff=7
PulseList:
 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.
RelatedPackageVersions:
 linux-restricted-modules-3.19.0-16-generic N/A
 linux-backports-modules-3.19.0-16-generic N/A
 linux-firmware 1.143.1
RfKill:

SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/06/2013
dmi.bios.vendor: AMI
dmi.bios.version: 8.17
dmi.board.name: 2AD5
dmi.board.vendor: PEGATRON CORPORATION
dmi.board.version: 1.03
dmi.chassis.asset.tag: CZC3110LN2
dmi.chassis.type: 3
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnAMI:bvr8.17:bd02/06/2013:svnHewlett-Packard:pnHPElite7500SeriesMT:pvr1.00:rvnPEGATRONCORPORATION:rn2AD5:rvr1.03:cvnHewlett-Packard:ct3:cvr:
dmi.product.name: HP Elite 7500 Series MT
dmi.product.version: 1.00
dmi.sys.vendor: Hewlett-Packard

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.1 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.1-unstable/

[penalvch (penalvch)]

Enrico Marongiu, as per http://h20564.www2.hp.com/hpsc/swd/public/readIndex?sp4ts.oid=5270830&swLangOid=8&swEnvOid=4158 an update to your computer's buggy and outdated BIOS is available (8.21). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything?

If it doesn't, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette .

Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report.

Once the BIOS is updated, and the information above is provided, then please mark this report Status Confirmed.

Thank you for your understanding.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

[Vitor Lamas Gatti (vitorgatti)]

this bug is still present on Ubuntu 17.04.

kern.log:

May 31 18:58:29 dragon kernel: [ 335.940581] alx 0000:08:00.0 enp8s0: fatal interrupt 0x4001607, resetting

root@dragon:/var/log# lspci -vs 08:00
08:00.0 Ethernet controller: Qualcomm Atheros Killer E220x Gigabit Ethernet Controller (rev 10)
 Subsystem: Dell Killer E220x Gigabit Ethernet Controller
 Flags: bus master, fast devsel, latency 0, IRQ 18
 Memory at d2400000 (64-bit, non-prefetchable) [size=256K]
 I/O ports at 3000 [size=128]
 Capabilities: [40] Power Management version 3
 Capabilities: [58] Express Endpoint, MSI 00
 Capabilities: [c0] MSI: Enable- Count=1/16 Maskable+ 64bit+
 Capabilities: [d8] MSI-X: Enable+ Count=16 Masked-
 Capabilities: [100] Advanced Error Reporting
 Capabilities: [180] Device Serial Number ff-34-89-1a-ec-f4-bb-ff
 Kernel driver in use: alx
 Kernel modules: alx