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I can resume my laptop without problems when suspend via window manager like
xfce in my case. However when closing the lid the resume does not work, the
screen remains blank when opened again while the system is working
(CTRL-ALT-F2 working and so on).
Looking at Xorg.0.log shows me no action right after suspend. So it looks like
X does not get any resume trigger when the lid is opened again. So I assume a
problem in the signal chain whoever is responsible for this?
Xorg.0.log excerpt:
[ 1745.027] (II) event8 - Logitech K750: device removed
[ 1745.055] (II) event15 - Logitech MX Anywhere 2: device removed
[ 1745.072] (II) event21 - MX Anywhere 2 Keyboard: device removed
[ 1745.092] (II) event22 - MX Anywhere 2 Mouse: device removed
[ 1745.139] (II) AIGLX: Suspending AIGLX clients for VT switch
*** following section is missing when lid is opened ***
[ 1749.149] (II) AIGLX: Resuming AIGLX clients after VT switch
[ 1749.151] (II) modeset(0): EDID vendor "SDC", prod id 16705
[ 1749.151] (II) modeset(0): Printing DDC gathered Modelines:
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: systemd 245.4-4ubuntu3.2
ProcVersionSignature: Ubuntu 5.4.0-47.51-generic 5.4.55
Uname: Linux 5.4.0-47-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
Date: Wed Sep 23 10:57:19 2020
InstallationDate: Installed on 2019-12-19 (278 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: LENOVO 20QV00CEGE
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-47-generic
root=UUID=61de670d-9f3a-4c81-830c-6139384d0e13 ro modeprobe.blacklist=nouveau
amd_iommu=off resume=UUID=3f5116a3-c5a3-490f-b029-2388b7adac74 quiet splash
vt.handoff=7
SourcePackage: systemd
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/06/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: N2OET47W (1.34 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20QV00CEGE
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T08861 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrN2OET47W(1.34):bd08/06/2020:svnLENOVO:pn20QV00CEGE:pvrThinkPadX1Extreme2nd:rvnLENOVO:rn20QV00CEGE:rvrSDK0T08861WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad X1 Extreme 2nd
dmi.product.name: 20QV00CEGE
dmi.product.sku: LENOVO_MT_20QV_BU_Think_FM_ThinkPad X1 Extreme 2nd
dmi.product.version: ThinkPad X1 Extreme 2nd
dmi.sys.vendor: LENOVO
modified.conffile..etc.systemd.resolved.conf: [modified]
mtime.conffile..etc.systemd.logind.conf: 2020-09-23T10:22:54.440796
mtime.conffile..etc.systemd.resolved.conf: 2020-06-01T22:34:53.022126
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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Black screen after resume from suspend invoked by lid close on Thinkpad
https://bugs.launchpad.net/bugs/1896736
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