I thought this tutorial would be enough but alas, it isn't. If you're looking to wake up your Linux machine, see the link in the "sources" below. To set up the wake on LAN feature, it requires a little bit of patience and testing. Excel: Easily convert hyperlinks to text showing t.Asus EEE PC: Replacing the 1005HA keyboard.Opera: Disable context menu on double click.django: Create your own documentation for offline use.Python: Calculate the first/last Monday, Tuesday.Office: Dear Microsoft, Your Ribbons Suck!.Linux: Installing ipblock/iplist and configuring a.Invention: Rear View Mirror Partial Night Mode.Windows: Create a boot USB from Windows setup CD/DVD.Git: Cherry-picking and removing git commits.django: Date time picker on a custom form without.Firefox 4: Disable auto update of addons.Linux: Editing Gnome panels causes system to lock.Wake up on LAN on Windows XP, Windows 7 and Linux.Now I know about "Wake on pattern match", next time I will be prepared. The reason I didn't was I couldn't understand how a WOL packet could possibly be being sent so I ignored the possibility. My biggest mistake? I could have short circuited the resolution of this problem by testing my computers without the Ethernet cable plugged in right at the start. The solution? Simply disable the "Wake on pattern match" setting under the network adaptors advanced properties tab, as shown below: (Either that or I have got a renegade PC on my networking sending out these packets). If so it's no wonder my computers were exhibiting such crazy wakeup symptoms. I am no networking expert but the last two sound like they could be pretty common activities on your typical home network. NetBIOS over TCP/IP broadcast for station's assigned computername (frames with DIX header).Address resolution protocol (ARP) broadcast for station IP address (frames with DIX header).It will register the following packet patterns at miniport initialization: Currently, the Microsoft TCP/IP is the only Microsoft protocol stack that supports network power management. These are, for example, Enable Wakeup Set Packet Pattern Remove Packet Pattern. At runtime, the protocol sets the wake-up policy using OIDs. According to this Microsoft Article on Power Management for Network Devices: The packet patterns that define the wake-up frames are provided to the NDIS 5.0 miniport driver by the operating system. Well it seems that feature has been superseded by the more flexible "Wake on pattern match" capability. Most people are familiar with Wake-on-LAN which uses a "magic packet" (hard-coded) to trigger a wake event. What does "Wake on pattern match" actually do? It appears this obscure setting is enabled by default in Windows 7 for Realtek RTL8168B/8111B and RTL8168C(P)/8111C(P) Family Gigabit Ethernet NICs**.** I checked both my PCs and this setting was enabled. No further progress was made until I randomly stumbled across a forum posting about a network adaptor setting called " Wake on pattern match". Perhaps a third computer had been infected with malware and was trying to wake other computers to have its wicked way? Unfortunately nothing showed up on the wire. But much to my annoyance, when I ran this tool after a phantom wake it reported the type was “Unknown”!īecause I had a suspicion this could be a wake-on-lan (WOL) behaviour I used the WireShark network analysis tool to monitor network traffic for WOL packets. In the above screenshot you can see the computer was woken by something on the USB hub (my mouse in this case). To use this tool you simply type powercfg –lastwake at the command prompt I figured there must be a tool that could tell me what caused the wake up events, and after some research I discovered the Vista/Windows 7 powercfg tool. Last week I had a second wind and was determined to resolve this problem once and for all. Eventually I gave up and had to disable sleep on both machines (which pained me greatly!). I spent quite some time investigating these wake problems (which I believed were unrelated) but could not diagnose the issue. I suspected a power problem relating to the new card. To make matters worse one PC, which had recently had its graphics card upgraded, would go into an endless loop of restarting without ever getting to the Windows login screen. At other times they would wake up in the middle of the night. The computers would often wake up just seconds after being shut down. Fix for Windows 7 "random wake from sleep" problem 7 August, 2009įor the last few months I've had Windows 7 RC installed on two home computers, and both of them have exhibited a strange problem: They would randomly wake from sleep.
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