here's a weird one. HP T430 Thin Client, reloaded with OpenBSD. In it's intended use, it runs Linux in BIOS boot mode. OpenBSD's installer will boot that way, but the kernel is unable to see the 16g storage device. In UEFI boot mode, OpenBSD works well, including running X. This machine has ONLY HDMI and DisplayPort video connections (one each). There's no com port on the box for an alternative view of what is going on.
The problem comes when I put them to work without a monitor. The machine will boot fine, run fine...but sysupgrade fails to upgrade the system. It downloads the intended files, it reboots, and a few moments later, it's back up and running -- the old kernel. Plug an HDMI monitor in, run sysupgrade again, and it sees the upgrade marker and does the upgrade. Textbook Heisenbug :-/ For giggles, I did a sysupgrade -k (keep the files), let it reboot, in the root directory was bsd.upgrade as expected. I copied bsd.upgrade to /bsd, forcing it one way or another to run bsd.upgrade ... and the result was a hung system. Never came back after the reboot, no idea why. When I moved it to be near an HDMI monitor, it promptly booted, complained about permissions on bsd.upgrade, but upgraded perfectly (but I am not sure which of the two copies of the kernel it used). What can I do to help provide info to determine what is going on here? Nick. OpenBSD 7.1-current (GENERIC.MP) #493: Tue May 3 12:14:02 MDT 2022 dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 1686781952 (1608MB) avail mem = 1618399232 (1543MB) random: good seed from bootblocks mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.8 @ 0x6a8a7000 (23 entries) bios0: vendor AMI version "N41 v01.06" date 03/14/2019 bios0: HP HP t430 Thin Client acpi0 at bios0: ACPI 6.1 acpi0: sleep states S0 S3 S4 S5 acpi0: tables DSDT FACP FPDT FIDT MCFG DBG2 DBGP HPET LPIT APIC NPKT SSDT SSDT SSDT SSDT SSDT SSDT SSDT SSDT UEFI DBGP SSDT WDAT NHLT WSMT acpi0: wakeup devices SIO1(S3) HDAS(S3) XHC_(S4) XDCI(S4) RP01(S4) PXSX(S4) RP02(S4) PXSX(S4) RP03(S4) PXSX(S4) RP04(S4) PXSX(S4) RP05(S4) PXSX(S4) RP06(S4) PXSX(S4) acpitimer0 at acpi0: 3579545 Hz, 32 bits acpimcfg0 at acpi0 acpimcfg0: addr 0xe0000000, bus 0-255 acpihpet0 at acpi0: 19200000 Hz acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: Intel(R) Celeron(R) N4000 CPU @ 1.10GHz, 1096.97 MHz, 06-7a-01 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,EST,TM2,SSSE3,SDBG,CX16,xTPR,PDCM,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,3DNOWP,PERF,ITSC,FSGSBASE,TSC_ADJUST,SGX,SMEP,ERMS,MPX,RDSEED,SMAP,CLFLUSHOPT,PT,SHA,UMIP,MD_CLEAR,IBRS,IBPB,STIBP,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN cpu0: 4MB 64b/line 16-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 19MHz cpu0: mwait min=64, max=64, C-substates=0.2.0.2.4.2.1.1, IBE cpu1 at mainbus0: apid 2 (application processor) cpu1: Intel(R) Celeron(R) N4000 CPU @ 1.10GHz, 1096.97 MHz, 06-7a-01 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,EST,TM2,SSSE3,SDBG,CX16,xTPR,PDCM,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,3DNOWP,PERF,ITSC,FSGSBASE,TSC_ADJUST,SGX,SMEP,ERMS,MPX,RDSEED,SMAP,CLFLUSHOPT,PT,SHA,UMIP,MD_CLEAR,IBRS,IBPB,STIBP,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES,MELTDOWN cpu1: 4MB 64b/line 16-way L2 cache cpu1: smt 0, core 1, package 0 ioapic0 at mainbus0: apid 1 pa 0xfec00000, version 20, 120 pins acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus -1 (RP01) acpiprt2 at acpi0: bus -1 (RP02) acpiprt3 at acpi0: bus 1 (RP03) acpiprt4 at acpi0: bus 2 (RP04) acpiprt5 at acpi0: bus -1 (RP05) acpiprt6 at acpi0: bus -1 (RP06) acpiec0 at acpi0: not present acpipci0 at acpi0 PCI0: 0x00000000 0x00000011 0x00000001 "ALPS0001" at acpi0 not configured "WCOM508E" at acpi0 not configured "FS4304" at acpi0 not configured acpicmos0 at acpi0 "INT33A1" at acpi0 not configured "PNP0C14" at acpi0 not configured acpibtn0 at acpi0: PWRB "USBC000" at acpi0 not configured "PNP0C14" at acpi0 not configured acpipwrres0 at acpi0: DRST acpipwrres1 at acpi0: DRST acpipwrres2 at acpi0: DRST acpipwrres3 at acpi0: DRST acpipwrres4 at acpi0: DRST acpipwrres5 at acpi0: DRST acpipwrres6 at acpi0: WRST acpicpu0 at acpi0: C1(@1 halt!), PSS acpicpu1 at acpi0: C1(@1 halt!), PSS acpitz0 at acpi0acpitz0: TZ01: failed to read _TMP acpitz0: TZ01: failed to read _TMP acpivideo0 at acpi0: GFX0 acpivout0 at acpivideo0: DD1F cpu0: Enhanced SpeedStep 1096 MHz: speeds: 1101, 1100, 1000, 900, 800 MHz pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "Intel Gemini Lake Host" rev 0x03 "Intel Gemini Lake GNA" rev 0x03 at pci0 dev 0 function 3 not configured inteldrm0 at pci0 dev 2 function 0 "Intel UHD Graphics 600" rev 0x03 drm0 at inteldrm0 inteldrm0: msi, GEMINILAKE, gen 9 azalia0 at pci0 dev 14 function 0 "Intel Gemini Lake HD Audio" rev 0x03: msi azalia0: codecs: Realtek ALC256, Intel/0x280d, using Realtek ALC256 audio0 at azalia0 "Intel Gemini Lake MEI" rev 0x03 at pci0 dev 15 function 0 not configured ppb0 at pci0 dev 19 function 0 "Intel Gemini Lake PCIE" rev 0xf3: msi pci1 at ppb0 bus 1 re0 at pci1 dev 0 function 0 "Realtek 8168" rev 0x15: RTL8168H/8111H (0x5400), msi, address 04:0e:3c:12:53:85 rgephy0 at re0 phy 7: RTL8251 PHY, rev. 0 ppb1 at pci0 dev 19 function 1 "Intel Gemini Lake PCIE" rev 0xf3: msi pci2 at ppb1 bus 2 iwm0 at pci2 dev 0 function 0 "Intel Dual Band Wireless-AC 9260" rev 0x29, msix xhci0 at pci0 dev 21 function 0 "Intel Gemini Lake xHCI" rev 0x03: 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 sdhc0 at pci0 dev 28 function 0 "Intel Gemini Lake eMMC" rev 0x03: apic 1 int 39 sdhc0: SDHC 3.0, 200 MHz base clock sdmmc0 at sdhc0: 8-bit, sd high-speed, mmc high-speed, ddr52, dma pcib0 at pci0 dev 31 function 0 "Intel Gemini Lake LPC" rev 0x03 ichiic0 at pci0 dev 31 function 1 "Intel Gemini Lake SMBus" rev 0x03: apic 1 int 20 iic0 at ichiic0 isa0 at pcib0 isadma0 at isa0 pckbc0 at isa0 port 0x60/5 irq 1 irq 12 pckbd0 at pckbc0 (kbd slot) wskbd0 at pckbd0 mux 1 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 efifb at mainbus0 not configured scsibus1 at sdmmc0: 2 targets, initiator 0 sd0 at scsibus1 targ 1 lun 0: <SD/MMC, hA8aP>, 0000> removable sd0: 15028MB, 512 bytes/sector, 30777344 sectors ugen0 at uhub0 port 6 "Intel Bluetooth" rev 2.00/0.02 addr 2 vscsi0 at root scsibus2 at vscsi0: 256 targets softraid0 at root scsibus3 at softraid0: 256 targets root on sd0a (b4c2921f10464000.a) swap on sd0b dump on sd0b inteldrm0: 1024x768, 32bpp wsdisplay0 at inteldrm0 mux 1 pckbd_enable: command error wsdisplay0: screen 0-5 added (std, vt100 emulation) iwm0: hw rev 0x320, fw ver 46.4e1ceb39.0, address d4:d2:52:75:ae:86