Wake-on-LAN stopped working with 4.15.0-24 kernel

[Bill Miller]

Wake-on-LAN had been working fine since Bionic installed. When kernel 4.15.0-24 was pushed out and installed, it quit working. Set system to boot from 4.15.0-23, and it works again.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-24-generic 4.15.0-24.26
ProcVersionSignature: Ubuntu 4.15.0-24.26-generic 4.15.18
Uname: Linux 4.15.0-24-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: bill 1741 F.... pulseaudio
 /dev/snd/controlC0: bill 1741 F.... pulseaudio
CurrentDesktop: LXDE
Date: Tue Jul 3 11:14:09 2018
HibernationDevice: RESUME=UUID=adc97911-6d93-4094-8ec4-15cab05377e7
InstallationDate: Installed on 2018-04-27 (66 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
IwConfig:
 lo no wireless extensions.

 enp4s0 no wireless extensions.
MachineType: ASUSTeK COMPUTER INC. M11AD
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-24-generic root=UUID=0ca22edb-e6b0-412b-ad6e-00b2126b37c7 ro quiet splash vt.handoff=1
RelatedPackageVersions:
 linux-restricted-modules-4.15.0-24-generic N/A
 linux-backports-modules-4.15.0-24-generic N/A
 linux-firmware 1.173.1
RfKill:
 0: hci0: Bluetooth
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/15/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0302
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: M11AD
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0302:bd08/15/2013:svnASUSTeKCOMPUTERINC.:pnM11AD:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnM11AD:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.family: Desktop
dmi.product.name: M11AD
dmi.product.version: System Version
dmi.sys.vendor: ASUSTeK COMPUTER INC.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Bill Miller (wbmilleriii)]

I was able to work around this by re-enabling WoL in the card: sudo ethtool -s [card] wol g

Other computers on the LAN did not stop waking up and did not require the work around.

[Bill Miller (wbmilleriii)]

Disregard the 2nd sentence in comment #3. I cannot confirm that this is true.

[Kai-Heng Feng (kaihengfeng)]

This is because the fix of LP: #1752772 has one commit [1] that disables WoL by default.
Set WoL explicitly should solve your issue.

[1] https://github.com/torvalds/linux/commit/7edf6d314cd061e1d0a1b7bc0b511d64322c3f72

[Bill Miller (wbmilleriii)]

Thank you for the confirmation!

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.18 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/v4.18-rc3

[Bill Miller (wbmilleriii)]

@jsalisbury as explained by @kaihengfeng this change was advertent so this is probably not really a bug at all.