I have a zotac id41 that I'm using as a thin client for an LTSP system based on Ubuntu 12.04. I need to have WOL working on this device. I have some older model zotacs that I was able to get WOL working by using the r8168 driver rather than the in-kernel r8169 driver.

This new model has an rtl8110sc NIC chip, and it doesn't work with the r8168 driver. I've tried various things to try to make wake-on-lan work with this chip and the r8169 driver, but nothing I've tried works.

Here's a summary of what I've tried:

- several kernels, including the precise, quantal, and raring kernels (3.2, 3.5, and 3.8 respectively).
- putting "ethtool -s eth0 wol g" in the client's rc.local (ethtool confirms that wakeon is set to "g" anyway)
- echoing "NMAC" into /proc/acpi/wakeup (had no effect)
- using variations of poweroff, halt, shutdown and telinit to poweroff the hardware before trying to wake it up
- etherwake and wakeonlan
- fiddling with various acpi and option ROM settings in BIOS (according to Zotac, WOL is on by default and there isn't an actual setting for it in BIOS).

I've probably tried some other things that I can't recall at the moment, as I've been working on this off and on for a couple of days. Does anyone have suggestions or knowledge about this sort of thing?

You can check following patch.
http://permalink.gmane.org/gmane.linux.kernel/1383768

I saw that patch, but I wasn't sure what to do with it. Was this patch merged into the mainline kernel, or do I need to apply it myself?

It is dependent on driver version. The code has changed on some version. For example, last 6.017, the code has changed and the patch can't be applied.

I wonder why this isn't fixed in the mainline kernel. Honestly, I don't want to deal with creating a custom kernel and installing it in a chroot, if that's really what it takes. I guess I can live without WOL