ASPM Negotiation Issues and Network Change Detected Messages

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Description

On some Gio consoles, an issue was found where the unit would have a long string of Network Change Detected messages in EosShellLog.txt, like the following:

[ 4/9/2014 11:02:26:856 ] Network Change Detected
[ 4/9/2014 11:00:32:273 ] Network Change Detected
[ 4/9/2014 10:46:12:396 ] Network Change Detected
[ 4/9/2014 10:45:53:129 ] Network Change Detected
[ 4/9/2014 10:45:50:087 ] Network Change Detected
[ 4/9/2014 10:45:47:045 ] Network Change Detected
[ 4/9/2014 10:45:46:031 ] Network Change Detected
[ 4/9/2014 10:45:42:989 ] Network Change Detected
[ 4/9/2014 10:45:38:933 ] Network Change Detected
[ 4/9/2014 10:45:35:891 ] Network Change Detected
[ 4/9/2014 10:45:32:849 ] Network Change Detected

In this state, the console will likely not be outputting Network protocols like sACN or Artnet, but will be able to output DMX. Exiting to the Shell and restarting as Primary will not clear this problem. Powering off the console and restarting as Primary will clear this problem for some unknown length of time.

These messages hint at an issue with the ASPM Negotiation on the Gio motherboard. ASPM is an acronym for "Active State Power Management" - a power management protocol used to manage PCI Express-based (PCIe) serial link devices as links become less active over time.

To resolve this ASPM Negotiation issue, BIOS settings need to be changed.

With the console off and an External Keyboard attached, power on the console.

NOTE: All navigation and commands are entered from the External Keyboard.
Immediately start pressing [Delete] repeatedly to enter BiOS.
Using the Arrow keys, navigate to the "Chipset" tab.
Again using the Arrow keys navigate and highlight "South Bridge Configuration"; Press [Enter].
A new menu will be presented in the tab, again using the Arrow keys navigate and highlight "PCI Express Configuration"; Press [Enter].
A new menu will be presented in the tab, again using the Arrow keys navigate and highlight "PCI Express Root Port 1"; Press [Enter].
A new menu will be presented in the tab, again using the Arrow keys navigate and highlight "Automatic ASPM"; Press [Enter].
In the window that pops up labeled "ASPM Support" using the Arrow keys navigate and highlight "Disabled"; Press [Enter].
Press [F4] to save and exit, confirming with "Yes" highlighted and pressing [Enter]. The system will reboot.