Hi,

Has anyone managed to get a Lenovo ThinkCentre M910q (or similar) to suspend
with OpenBSD?

When invoking `zzz` the system prepares to go down, the screen goes blank, but
then a short while later, the system comes back, as though it was awoken
straight away.

Here's the diff between the initial dmesg and the dmesg after this "suspend and
come back" described above:

```
--- dmesg       Thu Jun 16 16:53:44 2022
+++ dmesg.1     Thu Jun 16 16:55:31 2022
@@ -360,3 +360,22 @@
 inteldrm0: 1920x1080, 32bpp
 wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation), using wskbd0
 wsdisplay0: screen 1-5 added (std, vt100 emulation)
+uhub0 detached
+uhub0 at usb0 configuration 1 interface 0 "Intel xHCI root hub" rev 3.00/1.00 
addr 1
+drm:pid42656:intel_ddi_sanitize_encoder_pll_mapping *NOTICE* [drm] 
[ENCODER:94:DDI J/PHY @] is disabled/in DSI mode with an ungated DDI clock, 
gate it
+drm:pid42656:intel_ddi_sanitize_encoder_pll_mapping *NOTICE* [drm] 
[ENCODER:109:DDI J/PHY @] is disabled/in DSI mode with an ungated DDI clock, 
gate it
+drm:pid42656:intel_ddi_sanitize_encoder_pll_mapping *NOTICE* [drm] 
[ENCODER:119:DDI J/PHY @] is disabled/in DSI mode with an ungated DDI clock, 
gate it
+uhidev0 at uhub0 port 11 configuration 1 interface 0 "SINO WEALTH Gaming KB" 
rev 2.00/1.03 addr 2
+uhidev0: iclass 3/1
+ukbd0 at uhidev0: 8 variable keys, 6 key codes
+wskbd1 at ukbd0 mux 1
+wskbd1: connecting to wsdisplay0
+uhidev1 at uhub0 port 11 configuration 1 interface 1 "SINO WEALTH Gaming KB" 
rev 2.00/1.03 addr 2
+uhidev1: iclass 3/0, 5 report ids
+ukbd1 at uhidev1 reportid 1: 120 variable keys, 0 key codes
+wskbd2 at ukbd1 mux 1
+wskbd2: connecting to wsdisplay0
+ucc0 at uhidev1 reportid 2: 573 usages, 18 keys, array
+wskbd3 at ucc0 mux 1
+wskbd3: connecting to wsdisplay0
+uhid0 at uhidev1 reportid 5: input=0, output=0, feature=5
```

Is it odd that devices come back which we never saw detach?

Repeating the same again, but with the inteldrm driver disabled, in case those
scary messages have something to do with this:

```
--- dmesg       Thu Jun 16 17:04:43 2022
+++ dmesg.1     Thu Jun 16 17:05:01 2022
@@ -554,3 +554,19 @@
 softraid0 at root
 scsibus4 at softraid0: 256 targets
 root on sd0a (5d59e5562a788986.a) swap on sd0b dump on sd0b
+wskbd1: disconnecting from wsdisplay0
+wskbd1 detached
+ukbd0 detached
+uhidev0 detached
+wskbd2: disconnecting from wsdisplay0
+wskbd2 detached
+ukbd1 detached
+wskbd3: disconnecting from wsdisplay0
+wskbd3 detached
+ucc0 detached
+uhid0 detached
+uhidev1 detached
+uhub0 detached
+uhub0 at usb0 configuration 1 interface 0 "Intel xHCI root hub" rev 3.00/1.00 
addr 1
+uhub0: port 11, set config 0 at addr 2 failed
+uhub0: device problem, disabling port 11
```

This time we see more devices detach, but when uhub0 comes back there is a
problem. curious...

Does anyone have any idea what is going on here? This was due to be my new
porting box, but I need it to suspend...

(FWIW: the system also fails to come up from ZZZ hibernate, but one thing at a
time)

Full dmesg (with inteldrm):

```
OpenBSD 7.1-current (GENERIC.MP) #582: Mon Jun 13 15:37:01 MDT 2022
    dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 17044692992 (16255MB)
avail mem = 16510771200 (15745MB)
random: good seed from bootblocks
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 3.0 @ 0xdcd91000 (88 entries)
bios0: vendor LENOVO version "M1AKT39A" date 07/16/2018
bios0: LENOVO 10MUS2UG00
acpi0 at bios0: ACPI 6.1
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP APIC FPDT MCFG SSDT FIDT SLIC MSDM SSDT SSDT HPET SSDT 
UEFI SSDT LPIT WSMT SSDT SSDT DBGP DBG2 DMAR TPM2 LUFT ASF! BGRT
acpi0: wakeup devices PEG0(S4) PEGP(S4) PEG1(S4) PEGP(S4) PEG2(S4) PEGP(S4) 
SIO1(S3) RP09(S4) PXSX(S4) RP10(S4) PXSX(S4) RP11(S4) PXSX(S4) RP12(S4) 
PXSX(S4) RP13(S4) [...]
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM) i5-6500T CPU @ 2.50GHz, 2394.42 MHz, 06-5e-03
cpu0: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,TSC_ADJUST,SGX,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,SRBDS_CTRL,MD_CLEAR,TSXFA,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges
cpu0: apic clock running at 24MHz
cpu0: mwait min=64, max=64, C-substates=0.2.1.2.4.1, IBE
cpu1 at mainbus0: apid 2 (application processor)
cpu1: Intel(R) Core(TM) i5-6500T CPU @ 2.50GHz, 2394.43 MHz, 06-5e-03
cpu1: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,TSC_ADJUST,SGX,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,SRBDS_CTRL,MD_CLEAR,TSXFA,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
cpu1: 256KB 64b/line 8-way L2 cache
cpu1: smt 0, core 1, package 0
cpu2 at mainbus0: apid 4 (application processor)
cpu2: Intel(R) Core(TM) i5-6500T CPU @ 2.50GHz, 2394.43 MHz, 06-5e-03
cpu2: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,TSC_ADJUST,SGX,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,SRBDS_CTRL,MD_CLEAR,TSXFA,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
cpu2: 256KB 64b/line 8-way L2 cache
cpu2: smt 0, core 2, package 0
cpu3 at mainbus0: apid 6 (application processor)
cpu3: Intel(R) Core(TM) i5-6500T CPU @ 2.50GHz, 2394.43 MHz, 06-5e-03
cpu3: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,TSC_ADJUST,SGX,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,SRBDS_CTRL,MD_CLEAR,TSXFA,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN
cpu3: 256KB 64b/line 8-way L2 cache
cpu3: smt 0, core 3, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 120 pins
acpimcfg0 at acpi0
acpimcfg0: addr 0xf8000000, bus 0-63
acpihpet0 at acpi0: 23999999 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus -1 (PEG0)
acpiprt2 at acpi0: bus -1 (PEG1)
acpiprt3 at acpi0: bus -1 (PEG2)
acpiprt4 at acpi0: bus -1 (RP09)
acpiprt5 at acpi0: bus -1 (RP10)
acpiprt6 at acpi0: bus -1 (RP11)
acpiprt7 at acpi0: bus -1 (RP12)
acpiprt8 at acpi0: bus -1 (RP13)
acpiprt9 at acpi0: bus -1 (RP01)
acpiprt10 at acpi0: bus -1 (RP02)
acpiprt11 at acpi0: bus -1 (RP03)
acpiprt12 at acpi0: bus -1 (RP04)
acpiprt13 at acpi0: bus -1 (RP05)
acpiprt14 at acpi0: bus -1 (RP06)
acpiprt15 at acpi0: bus -1 (RP07)
acpiprt16 at acpi0: bus -1 (RP08)
acpiprt17 at acpi0: bus -1 (RP17)
acpiprt18 at acpi0: bus -1 (RP18)
acpiprt19 at acpi0: bus -1 (RP19)
acpiprt20 at acpi0: bus -1 (RP20)
acpiprt21 at acpi0: bus -1 (RP21)
acpiprt22 at acpi0: bus -1 (RP22)
acpiprt23 at acpi0: bus -1 (RP23)
acpiprt24 at acpi0: bus -1 (RP24)
acpiprt25 at acpi0: bus -1 (RP14)
acpiprt26 at acpi0: bus -1 (RP15)
acpiprt27 at acpi0: bus -1 (RP16)
acpiec0 at acpi0: not present
acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001
acpicmos0 at acpi0
acpibtn0 at acpi0: SLPB
"PNP0C14" at acpi0 not configured
"INT33A1" at acpi0 not configured
acpibtn1 at acpi0: PWRB
tpm0 at acpi0 TPM_ 2.0 (CRB) addr 0xfed40000/0x880, device 0x00000000 rev 0x0
"PNP0C14" at acpi0 not configured
"LEN4001" at acpi0 not configured
acpicpu0 at acpi0: C3(200@256 mwait.1@0x40), C2(200@151 mwait.1@0x33), 
C1(1000@1 mwait.1), PSS
acpicpu1 at acpi0: C3(200@256 mwait.1@0x40), C2(200@151 mwait.1@0x33), 
C1(1000@1 mwait.1), PSS
acpicpu2 at acpi0: C3(200@256 mwait.1@0x40), C2(200@151 mwait.1@0x33), 
C1(1000@1 mwait.1), PSS
acpicpu3 at acpi0: C3(200@256 mwait.1@0x40), C2(200@151 mwait.1@0x33), 
C1(1000@1 mwait.1), PSS
acpipwrres0 at acpi0: PG00, resource for PEG0
acpipwrres1 at acpi0: PG01, resource for PEG1
acpipwrres2 at acpi0: PG02, resource for PEG2
acpipwrres3 at acpi0: WRST
acpipwrres4 at acpi0: WRST
acpipwrres5 at acpi0: WRST
acpipwrres6 at acpi0: WRST
acpipwrres7 at acpi0: WRST
acpipwrres8 at acpi0: WRST
acpipwrres9 at acpi0: WRST
acpipwrres10 at acpi0: WRST
acpipwrres11 at acpi0: WRST
acpipwrres12 at acpi0: WRST
acpipwrres13 at acpi0: WRST
acpipwrres14 at acpi0: WRST
acpipwrres15 at acpi0: WRST
acpipwrres16 at acpi0: WRST
acpipwrres17 at acpi0: WRST
acpipwrres18 at acpi0: WRST
acpipwrres19 at acpi0: WRST
acpipwrres20 at acpi0: WRST
acpipwrres21 at acpi0: WRST
acpipwrres22 at acpi0: WRST
acpivideo0 at acpi0: GFX0
acpivout0 at acpivideo0: DD1F
cpu0: using VERW MDS workaround (except on vmm entry)
cpu0: Enhanced SpeedStep 2394 MHz: speeds: 2501, 2500, 2400, 2300, 2100, 2000, 
1900, 1800, 1600, 1500, 1400, 1300, 1200, 1000, 900, 800 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel Core 6G Host" rev 0x07
inteldrm0 at pci0 dev 2 function 0 "Intel HD Graphics 530" rev 0x06
drm0 at inteldrm0
inteldrm0: msi, SKYLAKE, gen 9
xhci0 at pci0 dev 20 function 0 "Intel 200 Series xHCI" rev 0x00: msi, xHCI 1.0
usb0 at xhci0: USB revision 3.0
uhub0 at usb0 configuration 1 interface 0 "Intel xHCI root hub" rev 3.00/1.00 
addr 1
"Intel 200 Series Thermal" rev 0x00 at pci0 dev 20 function 2 not configured
"Intel 200 Series MEI" rev 0x00 at pci0 dev 22 function 0 not configured
ahci0 at pci0 dev 23 function 0 "Intel 200 Series AHCI" rev 0x00: msi, AHCI 
1.3.1
ahci0: PHY offline on port 0
ahci0: PHY offline on port 1
ahci0: PHY offline on port 2
ahci0: PHY offline on port 3
scsibus1 at ahci0: 32 targets
ppb0 at pci0 dev 27 function 0 "Intel 200 Series PCIE" rev 0xf0: msi
pci1 at ppb0 bus 1
nvme0 at pci1 dev 0 function 0 "Samsung SM961/PM961 NVMe" rev 0x00: msix, NVMe 
1.2
nvme0: SAMSUNG MZVLW128HEGR-000L1, firmware 5L1QCXB7, serial S341NX0K521287
scsibus2 at nvme0: 2 targets, initiator 0
sd0 at scsibus2 targ 1 lun 0: <NVMe, SAMSUNG MZVLW128, 5L1Q>
sd0: 122104MB, 512 bytes/sector, 250069680 sectors
pcib0 at pci0 dev 31 function 0 "Intel Q270 LPC" rev 0x00
"Intel 200 Series PMC" rev 0x00 at pci0 dev 31 function 2 not configured
azalia0 at pci0 dev 31 function 3 "Intel 200 Series HD Audio" rev 0x00: msi
azalia0: codecs: Realtek ALC294, Intel/0x2809, using Realtek ALC294
audio0 at azalia0
ichiic0 at pci0 dev 31 function 4 "Intel 200 Series SMBus" rev 0x00: apic 2 int 
16
iic0 at ichiic0
spdmem0 at iic0 addr 0x50: 8GB DDR4 SDRAM PC4-19200 SO-DIMM
spdmem1 at iic0 addr 0x52: 8GB DDR4 SDRAM PC4-19200 SO-DIMM
em0 at pci0 dev 31 function 6 "Intel I219-LM" rev 0x00: msi, address 
6c:4b:90:7e:76:f4
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
vmm0 at mainbus0: VMX/EPT
vscsi0 at root
scsibus3 at vscsi0: 256 targets
softraid0 at root
scsibus4 at softraid0: 256 targets
root on sd0a (5d59e5562a788986.a) swap on sd0b dump on sd0b
WARNING: clock gained 2 days
WARNING: CHECK AND RESET THE DATE!
drm:pid0:intel_ddi_sanitize_encoder_pll_mapping *NOTICE* [drm] [ENCODER:94:DDI 
\M-j/PHY  ] is disabled/in DSI mode with an ungated DDI clock, gate it
drm:pid0:intel_ddi_sanitize_encoder_pll_mapping *NOTICE* [drm] [ENCODER:109:DDI 
\M-j/PHY  ] is disabled/in DSI mode with an ungated DDI clock, gate it
inteldrm0: 1920x1080, 32bpp
wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation), using wskbd0
wsdisplay0: screen 1-5 added (std, vt100 emulation)
```

-- 
Best Regards
Edd Barrett

https://www.theunixzoo.co.uk

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