Comment 24 for bug 1536397

4.4-rc1 works just fine, so now I'm bisecting from 4.3 to 4.4-rc1, but it's also few thousand commits, something about 13 rounds to find.
I'm on 14.04 LTS and bug appeared only in 3.16 and 3.19 kernels, all installations with 3.13 works OK.
3.16.45 - ok
3.16.46 and higher - error
3.19.25 - ok
3.19.26 and higher - error
Bug was added at the end of July, but there were few hundreds of commits starting from 28 July and none of them directly linked to pata_amd or pata_acpi.