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** Changed in: linux (Ubuntu)
Status: Confirmed => Triaged
** Also affects: linux (Ubuntu Artful)
Importance: Medium
Status: Triaged
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https://bugs.launchpad.net/bugs/1718871
Title:
s4 get Error taking CPU down -34
Status in linux package in Ubuntu:
Triaged
Status in linux source package in Artful:
Triaged
Bug description:
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.
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