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Go to SolutionDell studio xps i7: sleep does not work properly unless network remote wake option is disabled in BIOS.
This is about the new Dell studio xps i7 desktop (vista x64 sp1, intel 920, 435MT, with ATI Radeon 4850 512 MB) and with an integrated Intel gigabit network port:
The pc will rewake itself from sleep almost immediately after going to sleep, and without any apparent cause, unless, under power options in the BIOS, the remote wake option for the network card is disabled. Unfortunately, that disables the remote wake from sleep function.
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Thank you, that solved the issue. The Intel LAN adapter had "Wake on Link" checked by default, not just "Wake on Magic Packet" (i.e. WOL packet). (The description for wake on link implies that it would be waking up only on things like file access, but in fact it seems to be waking up even on NetBIOS broadcasts.) After unchecking Wake On Link, I could return the Bios setting to allow remote wakeup.
Had the same problem.
However in my configuration (added a few USB and cards) I had to uncheck ALL "wake on" options for the same intel LAN chip. If I had the option "reduce link speed on standby" checked, the LAN would never reestablish a connection on wakeup either. I would recieve the error "LAN CABLE NOT CONNECTED" or "Check ethernet cable connected" from Windows.
After 3 days now, no problems. System will sleep and wake and I have stopped recieving the error about a disconnected LAN cable.
Annoying that the drivers are from August 2008 and all i7 systems were shipped after that date. Shows that no development is in work for a known problem.
Sorry I didn't specify what area the known problem concerns:
If "reduce link speed on standby" is checked, the LAN connection will never be re-established after a period of inactivity, be it sleep/standby, hibernate, or simply the screen saver.
I'm not the engineer that designed the part, but I can say from some simple trial and error a simple if then statement.
If the "reduce link speed on standby" is checked, then LAN will be disconnected.
If the "reduce link speed on standby" is not checked, then LAN connection will not be disconnected.
Note that no amount of troubleshooting that I did could restore the LAN connection other than a system restart or unchecking the box labeled "reduce link speed on standby" in the above dialog.
Hope this helps.
The "Wake on Link" option is right below Wake on Magic Packet from power off state (scroll down).
I discovered that the best options for my system appear to be (assuming you want sleep to work):
1. Uncheck reduce link speed during standby.
2. Uncheck reduce link speed during system idle.
3. Uncheck Wake on Directed Packet.
I can leave the others checked.
Also, note that Intel has newer drivers.

Davet50
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Posted December 17th, 2008 16:00
Instead of the bios go to the adapter settings and see what wake on lan options it has.