Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.14 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: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.14-rc2/ ** Tags added: kernel-da-key needs-bisect ** Changed in: linux (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1718871 Title: s4 get Error taking CPU down -34 Status in linux package in Ubuntu: Incomplete 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718871/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp