I'm running into a graphics problem and looking for work-around options. I understand others have run into this as well.
I'm getting a black screen as inteldrm switches display modes after upgrading from 6.1 (where this all worked fine) to 6.2. I blew away the install and rebuilt from scratch with the same results. I think this rules out an artifact from the ugprade. I've tried 'config -e' and disabling drm and inteldrm lines but quit and save doesn't seem to have the effect I expected. Is there a workaround for this other than a serial console? My graphics hardware is Intel HD Graphics 4000 from an i7-3517UE cpu. Dmesg is below, thanks for any suggestions. ---------------------------------- OpenBSD 6.2 (GENERIC.MP) #0: Thu Oct 12 19:53:18 CEST 2017 r...@syspatch-62-amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 16542121984 (15775MB) avail mem = 16033763328 (15290MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.7 @ 0xe0840 (63 entries) bios0: vendor Phoenix Technologies Ltd. version "IPC_2.2.400.3 X64" date 05/17/2017 bios0: CompuLab Ltd. Intense-PC acpi0 at bios0: rev 2 acpi0: sleep states S0 S3 S4 S5 acpi0: tables DSDT FACP SSDT HPET APIC MCFG FPDT ASF! SSDT SSDT UEFI POAT DMAR UEFI UEFI DBG2 acpi0: wakeup devices P0P1(S4) UAR1(S3) GLAN(S4) EHC1(S4) EHC2(S4) XHC_(S4) HDEF(S4) PXSX(S4) RP01(S4) PXSX(S4) RP02(S4) PXSX(S4) RP03(S4) PXSX(S4) RP04(S4) PXSX(S4) [...] acpitimer0 at acpi0: 3579545 Hz, 24 bits acpihpet0 at acpi0: 14318179 Hz acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: Intel(R) Core(TM) i7-3517UE CPU @ 1.70GHz, 2195.32 MHz 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,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS,SENSOR,ARAT cpu0: 256KB 64b/line 8-way L2 cache cpu0: TSC frequency 2195316300 Hz 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=0.2.1.1.2, IBE cpu1 at mainbus0: apid 1 (application processor) cpu1: Intel(R) Core(TM) i7-3517UE CPU @ 1.70GHz, 2195.01 MHz 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,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS,SENSOR,ARAT cpu1: 256KB 64b/line 8-way L2 cache cpu1: smt 1, core 0, package 0 cpu2 at mainbus0: apid 2 (application processor) cpu2: Intel(R) Core(TM) i7-3517UE CPU @ 1.70GHz, 2195.01 MHz 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,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS,SENSOR,ARAT cpu2: 256KB 64b/line 8-way L2 cache cpu2: smt 0, core 1, package 0 cpu3 at mainbus0: apid 3 (application processor) cpu3: Intel(R) Core(TM) i7-3517UE CPU @ 1.70GHz, 2195.01 MHz 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,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS,SENSOR,ARAT cpu3: 256KB 64b/line 8-way L2 cache cpu3: smt 1, core 1, package 0 ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins acpimcfg0 at acpi0 addr 0xf8000000, bus 0-63 acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus -1 (P0P1) acpiprt2 at acpi0: bus 3 (RP01) acpiprt3 at acpi0: bus 4 (RP02) acpiprt4 at acpi0: bus -1 (RP03) acpiprt5 at acpi0: bus -1 (RP04) acpiprt6 at acpi0: bus 5 (RP05) acpiprt7 at acpi0: bus -1 (RP06) acpiprt8 at acpi0: bus -1 (RP07) acpiprt9 at acpi0: bus -1 (RP08) acpiprt10 at acpi0: bus 1 (PEG0) acpiprt11 at acpi0: bus 2 (PEG1) acpiprt12 at acpi0: bus -1 (PEG2) acpiprt13 at acpi0: bus -1 (PEG3) acpiec0 at acpi0 acpicpu0 at acpi0: C2(350@80 mwait.1@0x20), C1(1000@1 mwait.1), PSS acpicpu1 at acpi0: C2(350@80 mwait.1@0x20), C1(1000@1 mwait.1), PSS acpicpu2 at acpi0: C2(350@80 mwait.1@0x20), C1(1000@1 mwait.1), PSS acpicpu3 at acpi0: C2(350@80 mwait.1@0x20), C1(1000@1 mwait.1), PSS acpipwrres0 at acpi0: FN00, resource for FAN0 acpipwrres1 at acpi0: FN01, resource for FAN1 acpipwrres2 at acpi0: FN02, resource for FAN2 acpipwrres3 at acpi0: FN03, resource for FAN3 acpipwrres4 at acpi0: FN04, resource for FAN4 acpitz0 at acpi0: critical temperature is 106 degC acpitz1 at acpi0: critical temperature is 106 degC "INT3F0D" at acpi0 not configured "PNP0A05" at acpi0 not configured "MSFT0001" at acpi0 not configured "MSFT0003" at acpi0 not configured acpiac0 at acpi0: AC unit online acpibtn0 at acpi0: LID0 acpibtn1 at acpi0: PWRB "INT340E" at acpi0 not configured "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 acpidock0 at acpi0: DOCK not docked (0) acpivideo0 at acpi0: GFX0 acpivout0 at acpivideo0: DD01 acpivout at acpivideo0 not configured acpivout at acpivideo0 not configured acpivout at acpivideo0 not configured acpivout at acpivideo0 not configured acpivout at acpivideo0 not configured acpivout at acpivideo0 not configured acpivout at acpivideo0 not configured cpu0: Enhanced SpeedStep 2195 MHz: speeds: 2101, 2100, 2000, 1900, 1800, 1700, 1600, 1500, 1400, 1300, 1200, 1100, 1000, 900, 800 MHz pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "Intel Core 3G Host" rev 0x09 ppb0 at pci0 dev 1 function 0 "Intel Core 3G PCIE" rev 0x09: msi pci1 at ppb0 bus 1 ppb1 at pci0 dev 1 function 1 "Intel Core 3G PCIE" rev 0x09: msi pci2 at ppb1 bus 2 inteldrm0 at pci0 dev 2 function 0 "Intel HD Graphics 4000" rev 0x09 drm0 at inteldrm0 inteldrm0: msi inteldrm0: 1024x768, 32bpp wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation) wsdisplay0: screen 1-5 added (std, vt100 emulation) xhci0 at pci0 dev 20 function 0 "Intel 7 Series xHCI" rev 0x04: msi 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 7 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured puc0 at pci0 dev 22 function 3 "Intel 7 Series KT" rev 0x04: ports: 1 com com4 at puc0 port 0 apic 2 int 19: ns16550a, 16 byte fifo com4: probed fifo depth: 0 bytes em0 at pci0 dev 25 function 0 "Intel 82579LM" rev 0x04: msi, address 00:01:c0:1d:02:b8 ehci0 at pci0 dev 26 function 0 "Intel 7 Series USB" rev 0x04: apic 2 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 azalia0 at pci0 dev 27 function 0 "Intel 7 Series HD Audio" rev 0x04: msi azalia0: codecs: Realtek ALC888, Intel/0x2806, using Realtek ALC888 audio0 at azalia0 ppb2 at pci0 dev 28 function 0 "Intel 7 Series PCIE" rev 0xc4: msi pci3 at ppb2 bus 3 ppb3 at pci0 dev 28 function 1 "Intel 7 Series PCIE" rev 0xc4: msi pci4 at ppb3 bus 4 vendor "Realtek", unknown product 0x8723 (class network subclass miscellaneous, rev 0x00) at pci4 dev 0 function 0 not configured ppb4 at pci0 dev 28 function 4 "Intel 7 Series PCIE" rev 0xc4: msi pci5 at ppb4 bus 5 re0 at pci5 dev 0 function 0 "Realtek 8168" rev 0x07: RTL8168E/8111E-VL (0x2c80), msi, address 00:01:c0:1d:02:bf rgephy0 at re0 phy 7: RTL8169S/8110S/8211 PHY, rev. 5 ehci1 at pci0 dev 29 function 0 "Intel 7 Series USB" rev 0x04: apic 2 int 23 usb2 at ehci1: USB revision 2.0 uhub2 at usb2 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00 addr 1 pcib0 at pci0 dev 31 function 0 "Intel QM77 LPC" rev 0x04 ahci0 at pci0 dev 31 function 2 "Intel 7 Series AHCI" rev 0x04: msi, AHCI 1.3 ahci0: port 0: 6.0Gb/s scsibus1 at ahci0: 32 targets sd0 at scsibus1 targ 0 lun 0: <ATA, C300-CTFDDAC064M, 0007> SCSI3 0/direct fixed naa.500a07510307776f sd0: 61057MB, 512 bytes/sector, 125045424 sectors, thin ichiic0 at pci0 dev 31 function 3 "Intel 7 Series SMBus" rev 0x04: apic 2 int 18 iic0 at ichiic0 spdmem0 at iic0 addr 0x50: 8GB DDR3 SDRAM PC3-12800 SO-DIMM spdmem1 at iic0 addr 0x52: 8GB DDR3 SDRAM PC3-12800 SO-DIMM "Intel 7 Series Thermal" rev 0x04 at pci0 dev 31 function 6 not configured isa0 at pcib0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo pckbc0 at isa0 port 0x60/5 irq 1 irq 12 pckbd0 at pckbc0 (kbd slot) wskbd0 at pckbd0: console keyboard, using wsdisplay0 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 vmm0 at mainbus0: VMX/EPT uhub3 at uhub1 port 1 configuration 1 interface 0 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2 ugen0 at uhub3 port 3 "Realtek RT Bluetooth Radio" rev 2.00/2.00 addr 3 uhub4 at uhub2 port 1 configuration 1 interface 0 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2 uhidev0 at uhub4 port 6 configuration 1 interface 0 "vendor 0x13ba Generic USB K/B" rev 1.10/0.01 addr 3 uhidev0: iclass 3/1 ukbd0 at uhidev0: 8 variable keys, 6 key codes wskbd1 at ukbd0 mux 1 wskbd1: connecting to wsdisplay0 uhidev1 at uhub4 port 6 configuration 1 interface 1 "vendor 0x13ba Generic USB K/B" rev 1.10/0.01 addr 3 uhidev1: iclass 3/1, 2 report ids ums0 at uhidev1 reportid 1: 3 buttons, Z dir wsmouse0 at ums0 mux 0 uhid0 at uhidev1 reportid 2: input=1, output=0, feature=0 vscsi0 at root scsibus2 at vscsi0: 256 targets softraid0 at root scsibus3 at softraid0: 256 targets root on sd0a (84e8f4922067fc54.a) swap on sd0b dump on sd0b