I recently installed Ubuntu 22.04.2 on my PC, and the system suspend doesn't seem to work. I've been browsing forums for answers, as this appears to be a common problem, but I can't find an obvious problem that marries up to any of the solutions.
Specifically, when running systemctl suspend, the system appears to go to sleep correctly, but then immediately wakes back up. When looking through the dmesg logs, there are no obvious errors, and systemctl status suspend.target seems to confirm this:
○ suspend.target - Suspend
Loaded: loaded (/lib/systemd/system/suspend.target; static)
Active: inactive (dead)
Docs: man:systemd.special(7)
May 17 09:42:37 systemd[1]: Reached target Suspend.
May 17 09:42:37 systemd[1]: Stopped target Suspend.
The following is the output of dmesg after systemctl suspend:
[ 4077.436687] PM: suspend entry (deep)
[ 4077.446548] Filesystems sync: 0.009 seconds
[ 4077.572957] Freezing user space processes ... (elapsed 0.001 seconds) done.
[ 4077.574776] OOM killer disabled.
[ 4077.574777] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
[ 4077.575932] printk: Suspending console(s) (use no_console_suspend to debug)
[ 4077.576759] serial 00:04: disabled
[ 4077.576851] r8169 0000:05:00.0 enp5s0: Link is Down
[ 4077.712510] [drm] free PSP TMR buffer
[ 4077.822253] amdgpu 0000:08:00.0: amdgpu: MODE1 reset
[ 4077.822257] amdgpu 0000:08:00.0: amdgpu: GPU mode1 reset
[ 4077.822403] amdgpu 0000:08:00.0: amdgpu: GPU smu mode1 reset
[ 4078.418257] ACPI: PM: Preparing to enter system sleep state S3
[ 4078.754702] ACPI: PM: Saving platform NVS memory
[ 4078.754804] Disabling non-boot CPUs ...
[ 4078.756772] smpboot: CPU 1 is now offline
[ 4078.759487] smpboot: CPU 2 is now offline
[ 4078.762431] smpboot: CPU 3 is now offline
[ 4078.764663] smpboot: CPU 4 is now offline
[ 4078.766895] smpboot: CPU 5 is now offline
[ 4078.769094] smpboot: CPU 6 is now offline
[ 4078.769686] Spectre V2 : Update user space SMT mitigation: STIBP off
[ 4078.771213] smpboot: CPU 7 is now offline
[ 4078.773289] smpboot: CPU 8 is now offline
[ 4078.775313] smpboot: CPU 9 is now offline
[ 4078.777171] smpboot: CPU 10 is now offline
[ 4078.779119] smpboot: CPU 11 is now offline
[ 4078.779899] ACPI: PM: Low-level resume complete
[ 4078.779921] ACPI: PM: Restoring platform NVS memory
[ 4078.780115] LVT offset 0 assigned for vector 0x400
[ 4078.780680] Enabling non-boot CPUs ...
[ 4078.780716] x86: Booting SMP configuration:
[ 4078.780716] smpboot: Booting Node 0 Processor 1 APIC 0x2
[ 4078.780826] microcode: CPU1: patch_level=0x0a20120a
[ 4078.783530] ACPI: \_SB_.PLTF.C002: Found 2 idle states
[ 4078.786823] CPU1 is up
[ 4078.786840] smpboot: Booting Node 0 Processor 2 APIC 0x4
[ 4078.786968] microcode: CPU2: patch_level=0x0a20120a
[ 4078.789112] ACPI: \_SB_.PLTF.C004: Found 2 idle states
[ 4078.790796] CPU2 is up
[ 4078.790814] smpboot: Booting Node 0 Processor 3 APIC 0x6
[ 4078.790909] microcode: CPU3: patch_level=0x0a20120a
[ 4078.793061] ACPI: \_SB_.PLTF.C006: Found 2 idle states
[ 4078.794806] CPU3 is up
[ 4078.794822] smpboot: Booting Node 0 Processor 4 APIC 0x8
[ 4078.794917] microcode: CPU4: patch_level=0x0a20120a
[ 4078.797071] ACPI: \_SB_.PLTF.C008: Found 2 idle states
[ 4078.798875] CPU4 is up
[ 4078.798890] smpboot: Booting Node 0 Processor 5 APIC 0xa
[ 4078.799007] microcode: CPU5: patch_level=0x0a20120a
[ 4078.801163] ACPI: \_SB_.PLTF.C00A: Found 2 idle states
[ 4078.802851] CPU5 is up
[ 4078.802866] smpboot: Booting Node 0 Processor 6 APIC 0x1
[ 4078.802994] microcode: CPU6: patch_level=0x0a20120a
[ 4078.805156] ACPI: \_SB_.PLTF.C001: Found 2 idle states
[ 4078.806904] Spectre V2 : Update user space SMT mitigation: STIBP always-on
[ 4078.806918] CPU6 is up
[ 4078.806940] smpboot: Booting Node 0 Processor 7 APIC 0x3
[ 4078.807039] microcode: CPU7: patch_level=0x0a20120a
[ 4078.809200] ACPI: \_SB_.PLTF.C003: Found 2 idle states
[ 4078.810937] CPU7 is up
[ 4078.810953] smpboot: Booting Node 0 Processor 8 APIC 0x5
[ 4078.811070] microcode: CPU8: patch_level=0x0a20120a
[ 4078.813227] ACPI: \_SB_.PLTF.C005: Found 2 idle states
[ 4078.814946] CPU8 is up
[ 4078.814961] smpboot: Booting Node 0 Processor 9 APIC 0x7
[ 4078.815062] microcode: CPU9: patch_level=0x0a20120a
[ 4078.817220] ACPI: \_SB_.PLTF.C007: Found 2 idle states
[ 4078.818977] CPU9 is up
[ 4078.818992] smpboot: Booting Node 0 Processor 10 APIC 0x9
[ 4078.819095] microcode: CPU10: patch_level=0x0a20120a
[ 4078.821252] ACPI: \_SB_.PLTF.C009: Found 2 idle states
[ 4078.823000] CPU10 is up
[ 4078.823016] smpboot: Booting Node 0 Processor 11 APIC 0xb
[ 4078.823140] microcode: CPU11: patch_level=0x0a20120a
[ 4078.825297] ACPI: \_SB_.PLTF.C00B: Found 2 idle states
[ 4078.827033] CPU11 is up
[ 4078.827967] ACPI: PM: Waking up from system sleep state S3
[ 4078.840112] xhci_hcd 0000:02:00.0: xHC error in resume, USBSTS 0x401, Reinit
[ 4078.840115] usb usb1: root hub lost power or was reset
[ 4078.840116] usb usb2: root hub lost power or was reset
[ 4078.840693] [drm] PCIE GART of 512M enabled (table at 0x0000008000300000).
[ 4078.840728] [drm] PSP is resuming...
[ 4078.840779] serial 00:04: activated
[ 4078.897675] nvme nvme0: Shutdown timeout set to 10 seconds
[ 4078.899643] nvme nvme0: 32/0/0 default/read/poll queues
[ 4078.923848] [drm] reserve 0xa00000 from 0x81fe200000 for PSP TMR
[ 4079.014729] r8169 0000:05:00.0 enp5s0: Link is Down
[ 4079.019015] amdgpu 0000:08:00.0: amdgpu: RAS: optional ras ta ucode is not available
[ 4079.036388] amdgpu 0000:08:00.0: amdgpu: SECUREDISPLAY: securedisplay ta ucode is not available
[ 4079.036390] amdgpu 0000:08:00.0: amdgpu: SMU is resuming...
[ 4079.036392] amdgpu 0000:08:00.0: amdgpu: smu driver if version = 0x0000000f, smu fw if version = 0x00000013, smu fw program = 0, version = 0x003b2900 (59.41.0)
[ 4079.036395] amdgpu 0000:08:00.0: amdgpu: SMU driver if version not matched
[ 4079.036443] amdgpu 0000:08:00.0: amdgpu: use vbios provided pptable
[ 4079.090189] amdgpu 0000:08:00.0: amdgpu: SMU is resumed successfully!
[ 4079.091461] [drm] DMUB hardware initialized: version=0x02020013
[ 4079.153056] ata1: SATA link down (SStatus 0 SControl 330)
[ 4079.153077] ata4: SATA link down (SStatus 0 SControl 300)
[ 4079.153131] ata6: SATA link down (SStatus 0 SControl 330)
[ 4079.156814] ata2: SATA link down (SStatus 0 SControl 330)
[ 4079.258843] usb 1-1: reset full-speed USB device number 2 using xhci_hcd
[ 4079.291036] [drm] kiq ring mec 2 pipe 1 q 0
[ 4079.295257] [drm] VCN decode and encode initialized successfully(under DPG Mode).
[ 4079.295626] [drm] JPEG decode initialized successfully.
[ 4079.295644] amdgpu 0000:08:00.0: amdgpu: ring gfx_0.0.0 uses VM inv eng 0 on hub 0
[ 4079.295645] amdgpu 0000:08:00.0: amdgpu: ring comp_1.0.0 uses VM inv eng 1 on hub 0
[ 4079.295645] amdgpu 0000:08:00.0: amdgpu: ring comp_1.1.0 uses VM inv eng 4 on hub 0
[ 4079.295646] amdgpu 0000:08:00.0: amdgpu: ring comp_1.2.0 uses VM inv eng 5 on hub 0
[ 4079.295646] amdgpu 0000:08:00.0: amdgpu: ring comp_1.3.0 uses VM inv eng 6 on hub 0
[ 4079.295647] amdgpu 0000:08:00.0: amdgpu: ring comp_1.0.1 uses VM inv eng 7 on hub 0
[ 4079.295647] amdgpu 0000:08:00.0: amdgpu: ring comp_1.1.1 uses VM inv eng 8 on hub 0
[ 4079.295647] amdgpu 0000:08:00.0: amdgpu: ring comp_1.2.1 uses VM inv eng 9 on hub 0
[ 4079.295648] amdgpu 0000:08:00.0: amdgpu: ring comp_1.3.1 uses VM inv eng 10 on hub 0
[ 4079.295648] amdgpu 0000:08:00.0: amdgpu: ring kiq_2.1.0 uses VM inv eng 11 on hub 0
[ 4079.295649] amdgpu 0000:08:00.0: amdgpu: ring sdma0 uses VM inv eng 12 on hub 0
[ 4079.295649] amdgpu 0000:08:00.0: amdgpu: ring sdma1 uses VM inv eng 13 on hub 0
[ 4079.295650] amdgpu 0000:08:00.0: amdgpu: ring vcn_dec_0 uses VM inv eng 0 on hub 1
[ 4079.295650] amdgpu 0000:08:00.0: amdgpu: ring vcn_enc_0.0 uses VM inv eng 1 on hub 1
[ 4079.295651] amdgpu 0000:08:00.0: amdgpu: ring vcn_enc_0.1 uses VM inv eng 4 on hub 1
[ 4079.295651] amdgpu 0000:08:00.0: amdgpu: ring jpeg_dec uses VM inv eng 5 on hub 1
I've checked all the obvious stuff I know about, I have more swap than I do RAM, my BIOS settings don't have anything on the power management side that clearly blocks sleep/suspend, I'm using the AMD driver packaged with Ubuntu, no proprietary drivers for any peripheral devices.
This is a PC, custom build: 32 GB RAM (34 GB Swap), AMD Radeon RX6600, AMD® Ryzen 5 5600X, Gigabyte B550M Motherboard.
