Service Manual

Troubleshooting
System Limitations
This section contains information about some new features and need-to-know information about this computer.
● Modern Standby Limitations
● Intel System Agent Enhanced Speed Step (SAGV) always disabled
● System board TPM settings through BIOS
Modern Standby Limitations
● Legacy PCI cards do not support Modern Standby through TI PCI bridge.
● Enterprise Hard Drives do not support Modern Standby.
●
Systems with 2.5-inch/ 3.5-inch Hard drives take longer to enter Modern Standby for the first time. System can enter
Modern Standby normally from the second time onwards.
● Graphics Cards or Add-In Cards not factory installed by Dell may not be Modern Standby compliant and would not allow the
system to enter Modern Standby.
● PSU LED may not turn off sporadically even after system enters Modern Standby
Table 20. System behavior with HDDs/ AICs which do not support Modern Standby
Screen dGfx fan Hard drive
LED
PWR LED PSU LED PSU fan CPU fan System fan
Expected
system
behavior
under
Modern
Standby
Off Off Off Off Off Off Off Off
Enterprise
SATA hard
drive
Off Off Off Off On On On On
PCIe AIC
not
supporting
ModS
Off Off/On (Up
to dGfx)
Off/On Off/On (by
S/W Drips)
On On On On
Legacy PCI
Card (via TI
Bridge)
Off Off/On (Up
to dGfx)
Off/On Off/On (by
S/W Drips)
On On On On
NOTE: ModS = Modern Standby
NOTE: PSU = Power Supply Unit
NOTE: CPU = Processor
Intel System Agent Enhanced Speed Step (SAGV) always disabled
All systems will have SAGV disabled by default. If enabled, systems will incur additional boot time when memory is added or
swapped.
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Troubleshooting 89