Question

12

Wake-on-LAN quit working with latest kernel (Bionic)

rated 0 times [ 12] [ 0] / answers: 1 / hits: 8011 / 1 Year ago, tue, december 6, 2022, 1:58:00

WOL was working great on Bionic until yesterday's kernel update. How to diagnose/recover it?

Edit: if set to boot from 4.15.0-23 kernel it works. If set to boot from 4.15.0-24 it does not.

Edit2: WoL can be enabled with

sudo ethtool -s [card] wol g

but it isn't persistent. Searching for how to set it every boot.

Edit3: Per a comment by Kai-Heng Feng on this bug report this was an advertent change! (and therefore not a bug)

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

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dileble

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2 Years ago

answered 1 Year ago irripri · Accepted Answer

To make this persistent I created a script in /etc/network/if-up.d

#!/bin/sh



/sbin/ethtool -s [card] wol g

This re-enables WoL every boot.