Community
cancel
Showing results for 
Search instead for 
Did you mean: 
KJohn15
Beginner
1,214 Views

Why does DQ77MK SMBIOS have same Type Instance = 1 for both Ethernets?

Both onboard Ethernets on the DQ77MK seem to have the same type instance number. This seems to cause problems with Linux biosdevname making it think there are duplicate bios names for the ethernet devices and fails to return a valid name. Anyone else run into this problem? I'm trying to qualify a new board for production with BIOS 054 and did not see any reference in release notes for subsequent BIOS updates that changes this data.

# dmidecode 2.11

# SMBIOS entry point at 0x000f04c0

SMBIOS 2.7 present.

79 structures occupying 3274 bytes.

Table at 0x000EC420.

Handle 0x0000, DMI type 0, 24 bytes

BIOS Information

Vendor: Intel Corp.

Version: MKQ7710H.86A.0054.2012.1120.1444

Release Date: 11/20/2012

Address: 0xF0000

Runtime Size: 64 kB

ROM Size: 12288 kB

Characteristics:

PCI is supported

BIOS is upgradeable

BIOS shadowing is allowed

Boot from CD is supported

Selectable boot is supported

EDD is supported

5.25"/1.2 MB floppy services are supported (int 13h)

3.5"/720 kB floppy services are supported (int 13h)

3.5"/2.88 MB floppy services are supported (int 13h)

Print screen service is supported (int 5h)

8042 keyboard services are supported (int 9h)

Serial services are supported (int 14h)

Printer services are supported (int 17h)

ACPI is supported

USB legacy is supported

BIOS boot specification is supported

Targeted content distribution is supported

UEFI is supported

BIOS Revision: 4.6

...........

Handle 0x0039, DMI type 41, 11 bytes

Onboard Device

Reference Designation: L1U1

Type: Ethernet

Status: Enabled

Type Instance: 1

Bus Address: 0000:00:19.0

Handle 0x003A, DMI type 41, 11 bytes

Onboard Device

Reference Designation: AU1

Type: Sound

Status: Enabled

Type Instance: 1

Bus Address: 0000:00:1b.0

Handle 0x003B, DMI type 41, 11 bytes

Onboard Device

Reference Designation: L2U1

Type: Ethernet

Status: Enabled

Type Instance: 1

Bus Address: 0000:02:00.0

Tags (1)
0 Kudos
2 Replies
Jose_H_Intel1
Employee
94 Views

Hello,

Please note that the official operating systems supported are Windows* 7 and Windows* 8. We recommend posting your inquiry in Linux* Communities.

Supported operating systems

http://www.intel.com/support/motherboards/desktop/sb/cs-008326.htm http://www.intel.com/support/motherboards/desktop/sb/cs-008326.htm

NSCOTT_P_Intel
Employee
94 Views

KS,

If you go by the formal definition for this parameter, you are absolutely correct; the type 41 record for the second NIC should have Device Type Instance (DTI) set to 2 (second device of this type). If you go by the example that they include in the SMBIOS spec, however, there's a problem -- the example states that the NICs need to be "identical" before the DTI is required to be set to 2. It could be argued that the 82579LM and 82574L NICs are not "identical". Still, I agree with you; the wording of the example is just unfortunate. I am having a defect report opened...

 

Reply