> 3) RTC can't wake up the laptop.

This is expected behavior for CZN w/ s2idle.

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https://bugs.launchpad.net/bugs/1927067

Title:
  Add s2idle support on AMD Renoir and Cezanne

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Confirmed
Status in linux-oem-5.10 package in Ubuntu:
  Invalid
Status in linux source package in Focal:
  Won't Fix
Status in linux-oem-5.10 source package in Focal:
  Confirmed
Status in linux source package in Hirsute:
  Confirmed
Status in linux-oem-5.10 source package in Hirsute:
  Invalid

Bug description:
  [Impact]
  S2idle doesn't work on AMD Renoir and Cezanne.

  [Fix]
  Backport AMD PMC driver and pull many new patches let AMDGPU support s2idle.

  [Test]
  Suspend the laptop and the system freezes.
  With the patch applied, suspend works but with some caveats:
  1) Keyboard sometimes can't wake up the laptop.
  2) Touchpad sometimes can wake up the laptop.
  3) RTC can't wake up the laptop.

  [Where problems could occur]
  Most changes are limited to logic of suspend/resume, and specific to Renoir 
GFX.
  However, there are some refactoring patches may cause unintended results, so 
AMDGPU may break for sleep/hibernation/runtime suspend on non-Renoir GFXs.

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