Hi Jiang, >>> I have the same problem with a Asrock Q1900B-ITX mainboard with >>> a Intel Celeron J1900 onboard. >>> >>> I did a bisect and ended up with: >>> >>> 593669c2ac0fe18baee04a3cd5539a148aa48574 is the first bad commit >>> >>> commit 593669c2ac0fe18baee04a3cd5539a148aa48574 >>> Author: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx> >>> Date: Thu Feb 5 13:44:46 2015 +0800 >>> >>> x86/PCI/ACPI: Use common ACPI resource interfaces to simplify >>> implementation >>> >>> >>> I can revert this quite big commit on current git head (4f671fe) with no >>> problems and then everything is fine again. >> >> Thanks for nailing this one! >> >> It really wasn't supposed to make any functional difference, though, so there >> must be some subtle mistake that escaped everyone in it. >> >> I'll have a look at that and hopefully Jiang Liu will be able to help in the >> meantime too. > Hi all, > Sorry for slow response, just return from Chinese New Holidays:) > Hi Thomas, > Could you please help to provide the dmesgs before and after the > revert? just grab a Minnowboard Max and test this by yourself. It has the same problem. The MAC address is ff:ff:ff:ff:ff:ff with this patch. Once I reverted it, the MAC address is correctly read again. Regards Marcel -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html