Hi Vidya, Your commit 4ff116d0d5fd8 ("PCI/ASPM: Save L1 PM Substates Capability for suspend/resume") has introduced a system resume issue described in the bug entry at: https://bugzilla.kernel.org/show_bug.cgi?id=216782 It looks like restoring the L1SS state during system resume has unexpected side effects. Can you have a look at this, please? Thanks, Rafael