Intel D850EMV2 Product Specification Update - Page 14

Intel Desktop Board D850EMV2 Specification Update ERRATA 1. Wake From an ACPI Sleep State Using Wake Methodologies May Fail PROBLEM: The desktop board hardware leaves the Resume Well Power OK (RSM_PWROK) signal deasserted before and after the resume well power (VccSus3_3 and VccSus1_8) is valid, instead of asserting it for 10 ms after valid power, which is required by the Intel® 82801BA I/O Controller Hub 2 (ICH2) and Intel® 82801BAM I/O Controller Hub 2 Mobile (ICH2-M) Datasheet (order number 290687). The result is that LAN wake attempts may fail. NOTE: Wake from LAN* using the MagicPacket* utility will not be affected by this errata. IMPLICATION: Users that take advantage of LAN wake methods to wake systems from an ACPI sleep state may experience some wake failures. WORKAROUND: None. STATUS: This issue was fixed in BIOS revision MV85010A.86A.0038.P15. 2. System Boot Time May be Excessive When Using ECC Memory PROBLEM: A blank screen may occur for as long as one minute during POST while the system is booting, when ECC memory is utilized. IMPLICATION: When BIOS detects ECC memory during the system boot process, BIOS will run memory scans multiple times resulting in a delayed POST (up to one minute) making the system seem unresponsive. WORKAROUND: None. STATUS: This erratum will not be fixed. 3. Fan Control Defaults Incorrectly Set in BIOS for Onboard Hardware Management ASIC PROBLEM: Default BIOS settings on desktop boards that implement the Intel Precision Cooling Technology fan control are incorrect, which could result in improper system cooling. IMPLICATION: The maximum front and rear system chassis fan speeds are limited to 30% of maximum, irrespective of the actual chassis temperature. Under certain circumstances, this fan speed limitation may not provide adequate system cooling. NOTE: The CPU fan is not controllable by the desktop board and is not directly impacted. WORKAROUND: Disable fan control by changing the 'FAN CONTROL' setting to "Disabled" in the BIOS setup menu under the 'ADVANCED' tab, 'FAN CONFIGURATION' menu. This will allow the system fans to run at full speed, which will allow maximum system cooling. STATUS: This erratum was fixed in BIOS revision MV85010A.86A.0057.P20. 8