Hi, I tried to bisect the mainline kernels and found some more tricky steps to reproduce this issue. The issue could be easier to reproduce if we wait for longer (> 20 sec) when the system is trying to get to sleep, and then press the power button to wake it up.
The latest test result is: (mainline) v4.8-rc3 - could reproduce this issue. (mainline) v4.8-rc4 - could reproduce this issue. That is, the latest kernel could still reproduce this issue. I will hide my comment (the comment#4 of this thread) because its test result is outdated. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1619231/comments/4 ** Description changed: Dell XPS 13 9350 on Ubuntu Xenial (CID 201507-18777) [Steps to reproduce this issue] - 1. Install Xenial on this machine - 2. Click the suspend of the up-right indicator of the desktop - 3. The system goes to suspend - 4. After few seconds (at least 10 seconds), press any key of the keyboard to try to wake up the system + 1. Install Xenial on this machine. + 2. Click the suspend of the up-right indicator of the desktop. + 3. The system goes to suspend. + 4. After few seconds (at least 20 seconds), press any key of the keyboard.to try to wake up the system. [Expected result] The system resumes and work normally. [Actually result] 1. The screen is black. - 2. The keyboard back light blinks + 2. The keyboard back light blinks. 3. Sometimes the system would power off (~ 1 out of 5 tries) [Reproducing rate] 4 out of 5. I have not successfully resumed the systems by succeeding to suspend several times ( less than 5 times). + + ------------------------- ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-36-generic 4.4.0-36.55 ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16 Uname: Linux 4.4.0-36-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: ubuntu 1380 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: ubuntu 1380 F.... pulseaudio CurrentDesktop: Unity Date: Thu Sep 1 18:05:24 2016 HibernationDevice: RESUME=UUID=7904faec-081b-4761-841a-12cc4282a403 InstallationDate: Installed on 2016-08-22 (10 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) Lsusb: - Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub - Bus 001 Device 003: ID 0c45:670c Microdia - Bus 001 Device 004: ID 8087:0a2b Intel Corp. - Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub + Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub + Bus 001 Device 003: ID 0c45:670c Microdia + Bus 001 Device 004: ID 8087:0a2b Intel Corp. + Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. XPS 13 9350 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-36-generic.efi.signed root=UUID=fe7866c6-8104-457f-837a-38a36b06da30 ro quiet splash vt.handoff=7 RelatedPackageVersions: - linux-restricted-modules-4.4.0-36-generic N/A - linux-backports-modules-4.4.0-36-generic N/A - linux-firmware 1.157 + linux-restricted-modules-4.4.0-36-generic N/A + linux-backports-modules-4.4.0-36-generic N/A + linux-firmware 1.157 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/01/2016 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.3.3 dmi.board.vendor: Dell Inc. dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.3.3:bd03/01/2016:svnDellInc.:pnXPS139350:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct9:cvr: dmi.product.name: XPS 13 9350 dmi.sys.vendor: Dell Inc. ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed ** Tags removed: kernel-fixed-upstream-4.8-rc3 ** Tags added: kernel-bug-exists-upstream ** Tags removed: kernel-fixed-upstream needs-reverse-bisect -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1619231 Title: [Dell XPS 13 9350] suspend failed to resume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1619231/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
