Apologies to dmesg@ for mistakenly posting this email to that list
instead of to misc@.
On Sun, Mar 01, 2026 at 11:27:49AM +1300, Avon Robertson wrote:
> I have been using this machine from a console, usually with tmux, for
> many weeks. This has worked reliably.
>
> My problem has been and still is, that the machine will not enter the
> X Windows System reliably when '$ startx' is invoked.
>
> Booting via xenodm is also unreliable. When the machine enters X,
> the keyboard freezes shortly afterwards.
>
> What methodology is suited, to gather information, and then use the
> information to debug such issues?
>
> This machine is running a recent OpenBSD-current snapshot and has
> packages that were updated immediately after the snapshot was
> installed.
>
> TIA for your reply.
>
> 1. /etc/sysctl.conf
> --------------------
> Contents prior to invoking startx:
> ddb.panic=1
> ddb.console=1
> machdep.allowaperture=1
> ^^^^^^^^^^^^^^^^^^^^^^^ # mentioned in Xorg.0.log below
>
> 2. Core file
> -------------
> -rw------- 1 aer aer 12743104 Feb 28 18:38 /home/aer/Xorg.core
>
> Invoking egdb from $HOME with a command line as below
>
> $ egdb WHATPROG Xorg.core
>
> needs a binary to replace WHATPROG?
>
> Because 'startx' is a script, it could not represent WHATPROG?
> Would the Xorg.core file contain meaningful debug info in this context?
>
> 3. Xorg.0.log
> --------------
> Contents of ~/.local/share/xorg/Xorg.0.log on next boot.
>
> [ 670.989]
> X.Org X Server 1.21.1.21
> X Protocol Version 11, Revision 0
> [ 670.990] Current Operating System: OpenBSD wrcr4.xan.priv 7.8 GENERIC.MP#257 amd64
> [ 670.990]
> [ 670.990] Current version of pixman: 0.46.4
> [ 670.991] Before reporting problems, check http://wiki.x.org
> to make sure that you have the latest version.
> [ 670.991] Markers: (--) probed, (**) from config file, (==) default setting,
> (++) from command line, (!!) notice, (II) informational,
> (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
> [ 670.992] (==) Log file: "/home/aer/.local/share/xorg/Xorg.0.log", Time: Sat Feb 28 18:37:59 2026
> [ 671.005] (==) Using system config directory "/usr/X11R6/share/X11/xorg.conf.d"
> [ 671.027] (==) No Layout section. Using the first Screen section.
> [ 671.027] (==) No screen section available. Using defaults.
> [ 671.027] (**) |-->Screen "Default Screen Section" (0)
> [ 671.027] (**) | |-->Monitor "<default monitor>"
> [ 671.028] (==) No monitor specified for screen "Default Screen Section".
> Using a default monitor configuration.
> [ 671.028] (**) Allowing byte-swapped clients
> [ 671.028] (==) Automatically adding devices
> [ 671.028] (==) Automatically enabling devices
> [ 671.028] (==) Not automatically adding GPU devices
> [ 671.028] (==) Automatically binding GPU devices
> [ 671.033] (==) Max clients allowed: 256, resource mask: 0x1fffff
> [ 671.063] (==) FontPath set to:
> /usr/X11R6/lib/X11/fonts/misc/,
> /usr/X11R6/lib/X11/fonts/TTF/,
> /usr/X11R6/lib/X11/fonts/OTF/,
> /usr/X11R6/lib/X11/fonts/Type1/,
> /usr/X11R6/lib/X11/fonts/100dpi/,
> /usr/X11R6/lib/X11/fonts/75dpi/
> [ 671.063] (==) ModulePath set to "/usr/X11R6/lib/modules"
> [ 671.063] (II) The server relies on wscons to provide the list of input devices.
> If no devices become available, reconfigure wscons or disable AutoAddDevices.
> [ 671.063] (II) Loader magic: 0xc8c2f89c0d0
> [ 671.063] (II) Module ABI versions:
> [ 671.063] X.Org ANSI C Emulation: 0.4
> [ 671.063] X.Org Video Driver: 25.2
> [ 671.063] X.Org XInput driver : 24.4
> [ 671.063] X.Org Server Extension : 10.0
> [ 671.064] (--) Using wscons driver on /dev/ttyC4
> [ 671.069] (WW) checkDevMem: failed to open /dev/mem and /dev/xf86
> (Permission denied)
> Check that you have set 'machdep.allowaperture=1'
> in /etc/sysctl.conf and reboot your machine
> refer to xf86(4) for details
> [ 671.069] linear framebuffer access unavailable
> [ 671.069] (II) LoadModule: "glx"
> [ 671.078] (II) Loading /usr/X11R6/lib/modules/extensions/libglx.so
> [ 671.277] (II) Module glx: vendor="X.Org Foundation"
> [ 671.277] compiled for 1.21.1.21, module version = 1.0.0
> [ 671.277] ABI class: X.Org Server Extension, version 10.0
> [ 671.278] (==) Matched modesetting as autoconfigured driver 0
> [ 671.278] (==) Assigned the driver to the xf86ConfigLayout
> [ 671.278] (II) LoadModule: "modesetting"
> [ 671.278] (II) Loading /usr/X11R6/lib/modules/drivers/modesetting_drv.so
> [ 671.306] (II) Module modesetting: vendor="X.Org Foundation"
> [ 671.306] compiled for 1.21.1.21, module version = 1.21.1
> [ 671.306] Module class: X.Org Video Driver
> [ 671.306] ABI class: X.Org Video Driver, version 25.2
> [ 671.306] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
> [ 671.306] (WW) Falling back to old probe method for modesetting
> [ 671.307] (II) modeset(0): using default device
> [ 671.307] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support
> [ 671.307] (II) modeset(0): Creating default Display subsection in Screen section
> "Default Screen Section" for depth/fbbpp 24/32
> [ 671.307] (==) modeset(0): Depth 24, (==) framebuffer bpp 32
> [ 671.307] (==) modeset(0): RGB weight 888
> [ 671.307] (==) modeset(0): Default visual is TrueColor
> [ 671.307] (II) Loading sub module "glamoregl"
> [ 671.307] (II) LoadModule: "glamoregl"
> [ 671.308] (II) Loading /usr/X11R6/lib/modules/libglamoregl.so
> [ 671.343] (II) Module glamoregl: vendor="X.Org Foundation"
> [ 671.343] compiled for 1.21.1.21, module version = 1.0.1
> [ 671.343] ABI class: X.Org ANSI C Emulation, version 0.4
> [ 671.693] (EE) Segmentation fault at address 0x0
> [ 671.693] (EE)
> Fatal server error:
> [ 671.693] (EE) Caught signal 11 (Segmentation fault). Server aborting
> [ 671.693] (EE)
> [ 671.693] (EE)
> Please consult the The X.Org Foundation support
> at http://wiki.x.org
> for help.
> [ 671.693] (EE) Please also check the log file at "/home/aer/.local/share/xorg/Xorg.0.log" for additional information.
> [ 671.693] (EE)
> [ 671.699] (EE) Server terminated with error (1). Closing log file.
>
> 4. dmesg
> --------
> I regret not capturing dmesg on the next reboot following the Xorg
> failure. This dmesg was captured prior to posting this email.
>
> OpenBSD 7.8-current (GENERIC.MP) #257: Tue Feb 24 20:53:35 MST 2026
> deraadt@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
> real mem = 34274910208 (32687MB)
> avail mem = 33208860672 (31670MB)
> random: good seed from bootblocks
> mpath0 at root
> scsibus0 at mpath0: 256 targets
> mainbus0 at root
> bios0 at mainbus0: SMBIOS rev. 2.8 @ 0xecf30 (90 entries)
> bios0: vendor American Megatrends Inc. version "2702" date 10/27/2015
> bios0: ASUS All Series
> acpi0 at bios0: ACPI 5.0
> acpi0: sleep states S0 S3 S4 S5
> acpi0: tables DSDT FACP APIC FPDT SSDT SSDT SSDT MCFG HPET SSDT SSDT UEFI
> acpi0: wakeup devices PEG0(S4) PEGP(S4) PEG1(S4) PEGP(S4) PEG2(S4) PEGP(S4) RP01(S4) PXSX(S4) RP02(S4) PXSX(S4) RP03(S4) PXSX(S4) RP05(S4) PXSX(S4) RP06(S4) PXSX(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) i7-4790K CPU @ 4.00GHz, 3997.81 MHz, 06-3c-03, patch 00000028
> cpu0: cpuid 1 edx=bfebfbff<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> ecx=77fafbbf<SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND>
> cpu0: cpuid 6 eax=77<SENSOR,ARAT,PTS> ecx=9<EFFFREQ>
> cpu0: cpuid 7.0 ebx=27ab<FSGSBASE,TSC_ADJUST,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID> edx=9c000600<SRBDS_CTRL,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD>
> cpu0: cpuid a vers=3, gp=8, gpwidth=48, ff=3, ffwidth=48
> cpu0: cpuid d.1 eax=1<XSAVEOPT>
> cpu0: cpuid 80000001 edx=2c100800<NXE,PAGE1GB,RDTSCP,LONG> ecx=21<LAHF,ABM>
> cpu0: cpuid 80000007 edx=100<ITSC>
> cpu0: MELTDOWN
> cpu0: 32KB 64b/line 8-way D-cache, 32KB 64b/line 8-way I-cache, 256KB 64b/line 8-way L2 cache, 8MB 64b/line 16-way L3 cache
> cpu0: smt 0, core 0, package 0
> mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges
> cpu0: apic clock running at 99MHz
> cpu0: mwait min=64, max=64, C-substates=0.2.1.2.4, IBE
> cpu1 at mainbus0: apid 2 (application processor)
> cpu1: Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz, 3997.82 MHz, 06-3c-03, patch 00000028
> cpu1: smt 0, core 1, package 0
> cpu2 at mainbus0: apid 4 (application processor)
> cpu2: Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz, 3997.91 MHz, 06-3c-03, patch 00000028
> cpu2: smt 0, core 2, package 0
> cpu3 at mainbus0: apid 6 (application processor)
> cpu3: Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz, 3998.08 MHz, 06-3c-03, patch 00000028
> cpu3: smt 0, core 3, package 0
> ioapic0 at mainbus0: apid 8 pa 0xfec00000, version 20, 24 pins
> acpimcfg0 at acpi0
> acpimcfg0: addr 0xe0000000, bus 0-255
> acpihpet0 at acpi0: 14318179 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 2 (RP01)
> acpiprt5 at acpi0: bus -1 (RP02)
> acpiprt6 at acpi0: bus -1 (RP03)
> acpiprt7 at acpi0: bus -1 (RP05)
> acpiprt8 at acpi0: bus -1 (RP06)
> acpiprt9 at acpi0: bus 9 (RP07)
> acpiprt10 at acpi0: bus -1 (RP08)
> acpiprt11 at acpi0: bus 3 (RP04)
> acpiec0 at acpi0
> acpiec at acpi0 not configured
> acpipci0 at acpi0 PCI0: 0x00000010 0x00000011 0x00000000
> acpicmos0 at acpi0
> "PNP0C14" at acpi0 not configured
> acpibtn0 at acpi0: PWRB
> "PNP0C0B" at acpi0 not configured
> "PNP0C0B" at acpi0 not configured
> "PNP0C0B" at acpi0 not configured
> "PNP0C0B" at acpi0 not configured
> "PNP0C0B" at acpi0 not configured
> "PNP0A0A" at acpi0 not configured
> "PNP0C14" at acpi0 not configured
> acpicpu0 at acpi0: C1(@1 halt!), PSS
> acpicpu1 at acpi0: C1(@1 halt!), PSS
> acpicpu2 at acpi0: C1(@1 halt!), PSS
> acpicpu3 at acpi0: C1(@1 halt!), 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: FN00, resource for FAN0
> acpipwrres4 at acpi0: FN01, resource for FAN1
> acpipwrres5 at acpi0: FN02, resource for FAN2
> acpipwrres6 at acpi0: FN03, resource for FAN3
> acpipwrres7 at acpi0: FN04, resource for FAN4
> acpitz0 at acpi0
> acpitz0: critical temperature is 105 degC
> acpitz1 at acpi0
> acpitz1: critical temperature is 105 degC
> acpivideo0 at acpi0: GFX0
> acpivout0 at acpivideo0: DD1F
> cpu0: using VERW MDS workaround (except on vmm entry)
> cpu0: Enhanced SpeedStep 3997 MHz: speeds: 4001, 4000, 3800, 3500, 3300, 3100, 2900, 2600, 2400, 2200, 1900, 1700, 1500, 1300, 1000, 800 MHz
> pci0 at mainbus0 bus 0
> pchb0 at pci0 dev 0 function 0 "Intel Core 4G Host" rev 0x06
> ppb0 at pci0 dev 1 function 0 "Intel Core 4G PCIE" rev 0x06: msi
> pci1 at ppb0 bus 1
> radeondrm0 at pci1 dev 0 function 0 "ATI Pitcairn" rev 0x00
> drm0 at radeondrm0
> radeondrm0: msi
> azalia0 at pci1 dev 0 function 1 "ATI Radeon HD 7700 Audio" rev 0x00: msi
> azalia0: no supported codecs
> xhci0 at pci0 dev 20 function 0 "Intel 9 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 9 Series MEI" rev 0x00 at pci0 dev 22 function 0 not configured
> em0 at pci0 dev 25 function 0 "Intel I218-V" rev 0x00: msi, address 10:c3:7b:6c:ce:b6
> ehci0 at pci0 dev 26 function 0 "Intel 9 Series USB" rev 0x00: apic 8 int 16
> usb1 at ehci0: USB revision 2.0
> uhub1 at usb1 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
> azalia1 at pci0 dev 27 function 0 "Intel 9 Series HD Audio" rev 0x00: msi
> azalia1: codecs: Realtek ALC1150
> audio0 at azalia1
> ppb1 at pci0 dev 28 function 0 "Intel 9 Series PCIE" rev 0xd0
> pci2 at ppb1 bus 2
> ppb2 at pci0 dev 28 function 3 "Intel 9 Series PCIE" rev 0xd0: msi
> pci3 at ppb2 bus 3
> ppb3 at pci3 dev 0 function 0 "ASMedia ASM1184e" rev 0x00
> pci4 at ppb3 bus 4
> ppb4 at pci4 dev 1 function 0 "ASMedia ASM1184e" rev 0x00: msi
> pci5 at ppb4 bus 5
> ppb5 at pci4 dev 3 function 0 "ASMedia ASM1184e" rev 0x00: msi
> pci6 at ppb5 bus 6
> ppb6 at pci4 dev 5 function 0 "ASMedia ASM1184e" rev 0x00: msi
> pci7 at ppb6 bus 7
> ppb7 at pci4 dev 7 function 0 "ASMedia ASM1184e" rev 0x00: msi
> pci8 at ppb7 bus 8
> vendor "Oxford", unknown product 0xc140 (class communications subclass serial, rev 0x00) at pci8 dev 0 function 0 not configured
> vendor "Oxford", unknown product 0xc141 (class communications subclass serial, rev 0x00) at pci8 dev 0 function 1 not configured
> ppb8 at pci0 dev 28 function 6 "Intel 9 Series PCIE" rev 0xd0: msi
> pci9 at ppb8 bus 9
> xhci1 at pci9 dev 0 function 0 "ASMedia ASM1042A xHCI" rev 0x00: msix, xHCI 1.0
> usb2 at xhci1: USB revision 3.0
> uhub2 at usb2 configuration 1 interface 0 "ASMedia xHCI root hub" rev 3.00/1.00 addr 1
> ehci1 at pci0 dev 29 function 0 "Intel 9 Series USB" rev 0x00: apic 8 int 23
> usb3 at ehci1: USB revision 2.0
> uhub3 at usb3 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
> pcib0 at pci0 dev 31 function 0 "Intel Z97 LPC" rev 0x00
> ahci0 at pci0 dev 31 function 2 "Intel 9 Series AHCI" rev 0x00: msi, AHCI 1.3
> ahci0: port 0: 6.0Gb/s
> ahci0: port 2: 6.0Gb/s
> ahci0: port 5: 1.5Gb/s
> scsibus1 at ahci0: 32 targets
> sd0 at scsibus1 targ 0 lun 0: <ATA, WDC WD2003FZEX-0, 01.0> naa.50014ee26bccb002
> sd0: 1907729MB, 512 bytes/sector, 3907029168 sectors
> sd1 at scsibus1 targ 2 lun 0: <ATA, WDC WD2003FZEX-0, 01.0> naa.50014ee216776939
> sd1: 1907729MB, 512 bytes/sector, 3907029168 sectors
> cd0 at scsibus1 targ 5 lun 0: <HL-DT-ST, BD-RE BH16NS40, 1.01> removable
> ichiic0 at pci0 dev 31 function 3 "Intel 9 Series SMBus" rev 0x00: apic 8 int 18
> iic0 at ichiic0
> spdmem0 at iic0 addr 0x50: 8GB DDR3 SDRAM PC3-10600
> spdmem1 at iic0 addr 0x51: 8GB DDR3 SDRAM PC3-10600
> spdmem2 at iic0 addr 0x52: 8GB DDR3 SDRAM PC3-10600
> spdmem3 at iic0 addr 0x53: 8GB DDR3 SDRAM PC3-10600
> 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
> wbsio0 at isa0 port 0x2e/2: NCT6791D rev 0x03
> wbsio0 port 0x290/2 not configured
> uhidev0 at uhub0 port 5 configuration 1 interface 0 "KYE SYSTEMS CORP. Wired Mouse" rev 1.10/24.58 addr 2
> uhidev0: iclass 3/1
> ums0 at uhidev0: 3 buttons, Z dir
> wsmouse0 at ums0 mux 0
> uhidev1 at uhub0 port 5 configuration 1 interface 1 "KYE SYSTEMS CORP. Wired Mouse" rev 1.10/24.58 addr 2
> uhidev1: iclass 3/0, 1 report id
> uhid0 at uhidev1 reportid 1: input=0, output=0, feature=7
> uhidev2 at uhub0 port 6 configuration 1 interface 0 "Logitech USB Keyboard" rev 1.10/64.00 addr 3
> uhidev2: iclass 3/1
> ukbd0 at uhidev2: 8 variable keys, 6 key codes
> wskbd1 at ukbd0 mux 1
> uhidev3 at uhub0 port 6 configuration 1 interface 1 "Logitech USB Keyboard" rev 1.10/64.00 addr 3
> uhidev3: iclass 3/0, 3 report ids
> ucc0 at uhidev3 reportid 1: 2 usages, 3 keys, enum
> wskbd2 at ucc0 mux 1
> uhid1 at uhidev3 reportid 2: input=1, output=0, feature=0
> ucc1 at uhidev3 reportid 3: 21 usages, 14 keys, enum
> wskbd3 at ucc1 mux 1
> uplcom0 at uhub0 port 14 configuration 1 interface 0 "Prolific Technology Inc. USB-Serial Controller D" rev 1.10/4.00 addr 4
> ucom0 at uplcom0: usb0.0.0000e.0
> uhub4 at uhub1 port 1 configuration 1 interface 0 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2
> uhub5 at uhub3 port 1 configuration 1 interface 0 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2
> vscsi0 at root
> scsibus2 at vscsi0: 256 targets
> softraid0 at root
> scsibus3 at softraid0: 256 targets
> root on sd0a (11e402f17390ca5c.a) swap on sd0b dump on sd0b
> radeondrm0: PITCAIRN
> radeon_audio_component_init: stub
> radeondrm0: 2560x1440, 32bpp
> wsdisplay0 at radeondrm0 mux 1: console (std, vt100 emulation), using wskbd0
> wskbd1: connecting to wsdisplay0
> wskbd2: connecting to wsdisplay0
> wskbd3: connecting to wsdisplay0
> wsdisplay0: screen 1-5 added (std, vt100 emulation)
>
> --
> aer
--
aer
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