Possibly a duplicate of bug 1861837. If so, setting snd_hda_intel.dmic_detect=0 should help as a workaround. To do this, create a file named /etc/modprobe.d/snd-hda-intel.conf with the following contents:
options snd-hda-intel dmic_detect=0 Reboot, then check that the option was set: $ cat /sys/module/snd_hda_intel/parameters/dmic_detect Which should show 'N' if the option was applied. If suspend works with dmic_detect disabled then this is the same issue as in the other bug. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-5.4 in Ubuntu. https://bugs.launchpad.net/bugs/1861462 Title: Lenovo Thinkpad X1 Carbon 7th Gen doesn't suspend and resume Status in linux-5.4 package in Ubuntu: Confirmed Status in linux-5.4 source package in Focal: Confirmed Bug description: Steps: 1. Install Ubuntu 20.04 daily image (tested Jan 29th, 2020 image) using default options. 2. apt update 3. apt upgrade 4. reboot so the machine is in pristine state 5. Close lid 6. Machine doesn't suspend (the light on the laptop power button doesn't pulsate) 7. Open the lid. The system doesn't respond and display is off 8. the only option is to power down the laptop and restart it. 9. upon restarting, Apport doesn't complain (this report was filed manually using ubuntu-bug) ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-12-generic 5.4.0-12.15 ProcVersionSignature: Ubuntu 5.4.0-12.15-generic 5.4.8 Uname: Linux 5.4.0-12-generic x86_64 ApportVersion: 2.20.11-0ubuntu16 Architecture: amd64 CurrentDesktop: GNOME Date: Thu Jan 30 18:56:41 2020 InstallationDate: Installed on 2020-01-30 (0 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200124) SourcePackage: linux-signed-5.4 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-5.4/+bug/1861462/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
