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 v4.17 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/v4.17 ** 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/1775816 Title: Hang at the 3rd cycle when running S4 stress script on Ubuntu core system. Status in linux package in Ubuntu: Incomplete Bug description: Image info: Caracalla 16.04-1.35 rev 49/ Caracalla-kernel 4.4.0-2019.20-1 Rev 84/ Core 16-2.32.8 Rev 4650 System info: Ubuntu core Description of the issue: Hang at the 3rd cycle when running S4 stress script. Expected result: Enter S4 and wake up successfully when running S4 stress script. Actual result: Hang at the 3rd cycle, and Green LED always ON. Isolation: Manual type “rtcwake -s 120 -m disk” in the terminal, then at the third cycle input the command, the SUT hang. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1775816/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
