Public bug reported:

[Impact]
ACPI error can be found in kernel message:
[    3.717920] ACPI Error: No handler for Region [SYSI] (00000000ab9e62c5) 
[IPMI] (20230628/evregion-130)

[Fix]
On Dell systems that have IPI0001 device, ensure IPMI region is ready
before acpi_power_meter invokes any ACPI method.

[Test]
With the patch applied, no such error can be found in kernel message.
acpi_power_meter sysfs also works correctly.

[Where problems could occur]
If asynchronous probe is disabled, the device drivers that probe after
acpi_power_meter needs to wait until the completion is done, hence the
boot time might be slower.

** Affects: linux (Ubuntu)
     Importance: Medium
         Status: Confirmed

** Affects: linux-oem-6.5 (Ubuntu)
     Importance: Undecided
         Status: Invalid

** Affects: linux (Ubuntu Jammy)
     Importance: Undecided
         Status: Won't Fix

** Affects: linux-oem-6.5 (Ubuntu Jammy)
     Importance: Medium
         Status: Confirmed

** Affects: linux (Ubuntu Mantic)
     Importance: Medium
         Status: Confirmed

** Affects: linux-oem-6.5 (Ubuntu Mantic)
     Importance: Undecided
         Status: Invalid

** Affects: linux (Ubuntu Noble)
     Importance: Medium
         Status: Confirmed

** Affects: linux-oem-6.5 (Ubuntu Noble)
     Importance: Undecided
         Status: Invalid

** Also affects: linux (Ubuntu Noble)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Mantic)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Noble)
       Status: New => Confirmed

** Changed in: linux (Ubuntu Mantic)
       Status: New => Confirmed

** Changed in: linux (Ubuntu Mantic)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu Noble)
   Importance: Undecided => Medium

** Also affects: linux (Ubuntu Jammy)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Jammy)
       Status: New => Won't Fix

** Also affects: linux-oem-6.5 (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: linux-oem-6.5 (Ubuntu Jammy)
       Status: New => Confirmed

** Changed in: linux-oem-6.5 (Ubuntu Mantic)
       Status: New => Invalid

** Changed in: linux-oem-6.5 (Ubuntu Noble)
       Status: New => Invalid

** Changed in: linux-oem-6.5 (Ubuntu Jammy)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/2059263

Title:
  Fix acpi_power_meter accessing IPMI region before it's ready

Status in linux package in Ubuntu:
  Confirmed
Status in linux-oem-6.5 package in Ubuntu:
  Invalid
Status in linux source package in Jammy:
  Won't Fix
Status in linux-oem-6.5 source package in Jammy:
  Confirmed
Status in linux source package in Mantic:
  Confirmed
Status in linux-oem-6.5 source package in Mantic:
  Invalid
Status in linux source package in Noble:
  Confirmed
Status in linux-oem-6.5 source package in Noble:
  Invalid

Bug description:
  [Impact]
  ACPI error can be found in kernel message:
  [    3.717920] ACPI Error: No handler for Region [SYSI] (00000000ab9e62c5) 
[IPMI] (20230628/evregion-130)

  [Fix]
  On Dell systems that have IPI0001 device, ensure IPMI region is ready
  before acpi_power_meter invokes any ACPI method.

  [Test]
  With the patch applied, no such error can be found in kernel message.
  acpi_power_meter sysfs also works correctly.

  [Where problems could occur]
  If asynchronous probe is disabled, the device drivers that probe after
  acpi_power_meter needs to wait until the completion is done, hence the
  boot time might be slower.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2059263/+subscriptions


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