Appears in 3.16.0-31-generic
$ dmesg -T |grep -i warning [Sat Feb 14 23:13:45 2015] ACPI Warning: SystemIO range 0x0000000000000428-0x000000000000042f conflicts with OpRegion 0x0000000000000400-0x000000000000047f (\PMBA) (20140424/utaddress-258) [Sat Feb 14 23:13:45 2015] ACPI Warning: SystemIO range 0x0000000000000428-0x000000000000042f conflicts with OpRegion 0x0000000000000400-0x000000000000043b (\_SB_.PCI0.LPC_.PMA1) (20140424/utaddress-258) [Sat Feb 14 23:13:45 2015] ACPI Warning: SystemIO range 0x0000000000000530-0x000000000000053f conflicts with OpRegion 0x0000000000000538-0x000000000000053a (\GPIO) (20140424/utaddress-258)
Appears in 3.16.0-31-generic
$ dmesg -T |grep -i warning 428-0x000000000 000042f conflicts with OpRegion 0x0000000000000 400-0x000000000 000047f (\PMBA) (20140424/ utaddress- 258) 428-0x000000000 000042f conflicts with OpRegion 0x0000000000000 400-0x000000000 000043b (\_SB_. PCI0.LPC_ .PMA1) (20140424/ utaddress- 258) 530-0x000000000 000053f conflicts with OpRegion 0x0000000000000 538-0x000000000 000053a (\GPIO) (20140424/ utaddress- 258)
[Sat Feb 14 23:13:45 2015] ACPI Warning: SystemIO range 0x0000000000000
[Sat Feb 14 23:13:45 2015] ACPI Warning: SystemIO range 0x0000000000000
[Sat Feb 14 23:13:45 2015] ACPI Warning: SystemIO range 0x0000000000000