Okay, so I added to my GRUB kernel parameters string: acpi_sleep=s3_bios,s3_mode
per here: - http://powersave.sourceforge.net/powersave/Suspend2Ram.html - https://wiki.ubuntu.com/Kernel/KernelBootParameters and ran GRUB config. And set myself back to: echo deep | sudo tee /sys/power/mem_sleep And it appears to be working! I noticed SOMETHING seemed off because when my computer would "go to sleep" in the new version, the power light would stay bright blue (just like when it was on). So it seems to be crashing on suspend somewhere. Because now, when I hit suspend, it does the normal blinking yellow for the same LED. -- 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
