3cd091a773936c54344a519f7ee1379ccb620bee is the first bad commit
commit 3cd091a773936c54344a519f7ee1379ccb620bee
Author: Rafael J. Wysocki <[email protected]>
Date: Fri Feb 9 22:55:28 2018 +0100
ACPI / EC: Restore polling during noirq suspend/resume phases
Commit 662591461c4b (ACPI / EC: Drop EC noirq hooks to fix a
regression) modified the ACPI EC driver so that it doesn't switch
over to busy polling mode during noirq stages of system suspend and
resume in an attempt to fix an issue resulting from that behavior.
However, that modification introduced a system resume regression on
Thinkpad X240, so make the EC driver switch over to the polling mode
during noirq stages of system suspend and resume again, which
effectively reverts the problematic commit.
Fixes: 662591461c4b (ACPI / EC: Drop EC noirq hooks to fix a regression)
Link: https://bugzilla.kernel.org/show_bug.cgi?id=197863
Reported-by: Markus Demleitner <[email protected]>
Tested-by: Markus Demleitner <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
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https://bugs.launchpad.net/bugs/1791321
Title:
No video on laptop display after suspend/resume
Status in linux package in Ubuntu:
Confirmed
Bug description:
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
---
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
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