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[Bug 1580345] Re: LG V220 all in one PC with ACPI problems


Did this issue start happening after an update/upgrade?  Was there a
prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.6 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:

Once testing of the upstream kernel is complete, please mark this bug as

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc7-wily/

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

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  LG V220 all in one PC with ACPI problems

Status in linux package in Ubuntu:

Bug description:
  I have the following problem with a LG all in one PC V220.
  Ubuntu 16.04 does not boots unless ACPI is deactivated with acpi=off kernel option.
  Never see the X starting after waiting a lot of minutes.
  Removing the quiet kernel parameter we can see the kernel reporting a lot of errors and progressing very slowly.

  None of those parameters allowed a normal boot:

  Only acpi=off allowed the system to boot.
  But with very poor performance and only one core CPU.

  Tested also latest vanilla linux kernel with same problem.

  Hardware information in attached files.
  Attached ACPI dump extracted from Windows.

  I have some experience with many GNU/Linux distros but no experience debugging ACPI.
  I am willing to help debug this issue.
  Tell what you need.

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