Between linux 4.15.0-23 and 4.15.0-24, suspend/resume stopped working correctly. After resume, the laptop panel remains blank with -24 (external monitors resume correctly). Suspend/resume worked correctly with -23.
Ubuntu 18.04 LTS
Lenovo P50 laptop, using nouveau driver
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ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: john 1100 F.... pulseaudio
/dev/snd/controlC0: john 1100 F.... pulseaudio
DistroRelease: Ubuntu 18.04
HibernationDevice: RESUME=UUID=1114cee9-db59-4a6e-a257-06ed1131a72b
InstallationDate: Installed on 2017-02-01 (586 days ago)
InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
MachineType: LENOVO 20EN001AUS
Package: linux (not installed)
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 nouveaufb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-23-generic root=UUID=cd371ad3-bcc5-4389-b0b7-910bd49727c5 ro quiet
ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
RelatedPackageVersions:
linux-restricted-modules-4.15.0-23-generic N/A
linux-backports-modules-4.15.0-23-generic N/A
linux-firmware 1.173.1
RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
Tags: bionic
Uname: Linux 4.15.0-23-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers wireshark
_MarkForUpload: True
dmi.bios.date: 03/28/2018
dmi.bios.vendor: LENOVO
dmi.bios.version: N1EET77W (1.50 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20EN001AUS
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40705 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN1EET77W(1.50):bd03/28/2018:svnLENOVO:pn20EN001AUS:pvrThinkPadP50:rvnLENOVO:rn20EN001AUS:rvrSDK0J40705WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad P50
dmi.product.name: 20EN001AUS
dmi.product.version: ThinkPad P50
dmi.sys.vendor: LENOVO
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1791321
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.