Public bug reported:

When test S4 on Huawei 1288H V5 server as 
 #echo disk>/sys/power/state
It show error of
  Error taking CPU79 down: -34
  Non-boot CPUs are not disabled 

The echo command return with error of:
  Write error: Numerical result out of range 

>From the dmesg it show error of:
  CPU79 disable failed: CPU have 2 vectors assigned and there are only 1 
available 
  Error taking CPU79 down: -34

This server have been passed 16.04 certification
(https://certification.ubuntu.com/hardware/201707-25617/).

The test kernel is lasted 16.04.1 of linux-image-4.4.0-93-generic. It is
also failed on 16.04 with kernel of 4.4.9-21-generic,
4.12.0-041200-generic,4.14.0-999-generic which was download from
(http://kernel.ubuntu.com/~kernel-ppa/mainline/). But it works on 14.04
with kernel 3.13.0-24-generic and download kernel of
3.13.0-031300-generic from above link.

** Affects: ubuntu
     Importance: Undecided
         Status: New


** Tags: bot-comment

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https://bugs.launchpad.net/bugs/1718871

Title:
  s4 get Error taking CPU down -34

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