Bug ID: 237357
Summary: ThinkPad X240 doesn't resume from suspend with IOMMU
Product: Base System
Severity: Affects Only Me
Assignee: [hidden email] Reporter: [hidden email]
With hw.dmar.enable=1, this Haswell laptop doesn't wake up from S3, similar
symptoms to what it was doing when the TPM was enabled: no reaction to lid open
/ power button press, power LED keeps blinking.