Hello!
With new 3.19-rc1 kernel every time when I open LID on my laptop, kernel prints these error lines to dmesg:
[25566.368133] [drm:hsw_unclaimed_reg_detect.isra.6 [i915]] *ERROR* Unclaimed register detected. Please use the i915.mmio_debug=1 to debug this problem. [25566.368134] [drm:intel_uncore_check_errors [i915]] *ERROR* Unclaimed register before interrupt [25566.368192] [drm:hsw_unclaimed_reg_detect.isra.6 [i915]] *ERROR* Unclaimed register detected. Please use the i915.mmio_debug=1 to debug this problem. [25566.368232] [drm:hsw_unclaimed_reg_detect.isra.6 [i915]] *ERROR* Unclaimed register detected. Please use the i915.mmio_debug=1 to debug this problem.<4>[25568.446011] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [25568.447018] pci_bus 0000:02: Allocating resources [25568.447055] pci_bus 0000:03: Allocating resources [25568.447135] pci_bus 0000:04: Allocating resources [25568.447168] pci_bus 0000:05: Allocating resources [25568.447195] pci_bus 0000:06: Allocating resources [25568.447228] pci_bus 0000:0e: Allocating resources [25568.447323] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [25568.447557] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [25568.447735] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [25568.447847] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [25568.448399] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [25568.448438] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [25568.448566] acpi MSFT1111:00: Cannot transition to power state D3cold for parent in (unknown) [25568.448572] acpi INT33C2:00: Cannot transition to non-D0 state from D3 [25568.448577] acpi MSFT0002:00: Cannot transition to power state D3cold for parent in (unknown) [25568.448581] acpi ELAN1010:00: Cannot transition to power state D3cold for parent in (unknown) [25568.448587] acpi INT33C3:00: Cannot transition to non-D0 state from D3 [25568.448590] acpi INT33C0:00: Cannot transition to non-D0 state from D3 [25568.448594] acpi INT33C1:00: Cannot transition to non-D0 state from D3 [25568.448598] acpi INT33C4:00: Cannot transition to non-D0 state from D3 [25568.448602] acpi INT33C5:00: Cannot transition to non-D0 state from D3 [25568.448623] acpi device:41: Cannot transition to power state D3cold for parent in (unknown) [25568.448627] acpi INT33C6:00: Cannot transition to non-D0 state from D3 [25568.448890] pci_bus 0000:01: Allocating resources [25568.448905] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [25568.449064] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [25568.449472] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment
With older kernel (3.13) I do not see these errors, so it is regression. Can you look at it? If it is needed, I can provide other logs, ACPI/DSTD dumps, etc.