@alexhung Deep is already selected "s2idle [deep]". If I select s2idle, it looks like the same problem.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1910927 Title: Suspend stopped working since kernel 5.4 (ubuntu 20.04) Status in linux package in Ubuntu: Confirmed Bug description: Suspend was working on ubuntu 18.04 with kernel 4.15.0-128. After upgrade to ubuntu 20.04, suspend is not working. The device is on black screen, fully powered and not responding any longer. I can still boot the old kernel 4.15.0-128 from ubuntu 18.04, suspend is working with this kernel! I tested kernel 5.4.0-60 and 5.8.0-36 from hwe. With both kernels, suspend is broken on my older device with Core2Duo. --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: xubuntu 4020 F.... pulseaudio CasperMD5CheckResult: pass CasperVersion: 1.445 CurrentDesktop: XFCE DistroRelease: Ubuntu 20.04 LiveMediaBuild: Xubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) MachineType: SAMSUNG ELECTRONICS CO., LTD. R510/P510 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 nouveaudrmfb ProcKernelCmdLine: file=/cdrom/preseed/username.seed initrd=/casper/initrd quiet splash --- maybe-ubiquity ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30 RelatedPackageVersions: linux-restricted-modules-5.4.0-26-generic N/A linux-backports-modules-5.4.0-26-generic N/A linux-firmware 1.187 Tags: focal Uname: Linux 5.4.0-26-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 04/01/2010 dmi.bios.vendor: Phoenix Technologies Ltd. dmi.bios.version: 10LI.M008.20100401.KSJ dmi.board.name: R510/P510 dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr10LI.M008.20100401.KSJ:bd04/01/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnR510/P510:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR510/P510:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct10:cvrN/A: dmi.product.name: R510/P510 dmi.product.version: Not Applicable dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1910927/+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
