I was setting up a new server where I wasn't sure whether com0 or com1 was the port I wanted, so I turned on both tty00 and tty01 in /etc/ttys to see which one to use in boot.conf. Edited the file, did the 'kill -HUP 1', and... nothing. getty processes are listening on tty00 and tty01, but both ports are stone dead.
Tried cua00/cua01 in /etc/ttys on a lark, and it worked! Well, kinda... echo control isn't right, as passwords get echoed at the login prompt. Now that I knew which port was which, I configured boot.conf and rebooted. Bootloader & kernel messages work correctly on both com0 or com1, whichever is configured and connected to. Furthermore, using tty00/tty01 in /etc/ttys now works properly (including echo control), but ONLY on the port that was the boot console. To clarify: bootloader set tty com0: getty works on tty00, does not work on tty01 bootloader set tty com1: getty does not work on tty00, works on tty01 getty on cua00/cua01 works (but with echo issues) in all cases. This seems like possible serial line issues (carrier detect/DTR/DSR, etc.), but I don't know why. I've never had any problems with this null-modem cable before, and furthermore, one of the serial ports has no cable, but is connected internally to the IPMI/DRAC module and viewed via IPMI SoL [serial over LAN], so I couldn't change the cable pinout if I wanted. I also tried various combinations of flags mentioned in ttys(5) (local, softcar, etc.) to no effect. Does the kernel do something special regarding CD/DTR/DSR if the port is the boot console? I searched the list archives and found this thread from 2009, where others had the same problem, without any apparent resolution: https://marc.info/ ?l=openbsd-misc&m=123335745920052&w=2 Any ideas? ==== Hardware details: Dell R230, with the cheapest DRAC option (or rather, I selected the "basic" DRAC which came standard). Fortunately with the iDRAC 8 on 13th-gen servers (Rn30 etc.), even the iDRAC8 Basic has a dedicated NIC (previously you had to get an "enterprise" option for that). The serial port ordering is configurable in the BIOS; I have it set so that com0 is the physical port and com1 is IPMI (I think the default was the opposite). Besides configuring IPMI SoL and boot serial console redirection (port, baud rate, turn off "redirection after boot") in the BIOS, I also had to turn off "RAC Serial" in the iDRAC settings, so that the port went to the host via IPMI rather than the RAC itself. Connecting from a client with 'ipmitool -I lanplus -H <rac.ip> -U <admin user> sol activate' works great. dmesg: OpenBSD 6.1 (GENERIC.MP) #20: Sat Apr 1 13:45:56 MDT 2017 [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP RTC BIOS diagnostic error 80<clock_battery> real mem = 8395776000 (8006MB) avail mem = 8136646656 <(813)%20664-6656> (7759MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.8 @ 0x8ef68000 (43 entries) bios0: vendor Dell Inc. version "1.4.5" date 08/09/2016 bios0: Dell Inc. PowerEdge R230 acpi0 at bios0: rev 2 acpi0: sleep states S0 S5 acpi0: tables DSDT FACP BOOT SSDT SLIC HPET LPIT APIC MCFG WDAT SSDT DBGP DBG2 SSDT SSDT SSDT SSDT SSDT SSDT PRAD HEST BERT ERST EINJ DMAR FPDT SPCR acpi0: wakeup devices PEGP(S0) PEG0(S0) PEGP(S0) PEG1(S0) PEGP(S0) PEG2(S0) XHC_(S0) XDCI(S0) PXSX(S0) RP01(S0) PXSX(S0) RP02(S0) PXSX(S0) RP03(S0) PXSX(S0) RP04(S0) [...] acpitimer0 at acpi0: 3579545 Hz, 24 bits acpihpet0 at acpi0: 23999999 Hz acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: Intel(R) Core(TM) i3-6100 CPU @ 3.70GHz, 3696.00 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,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,SGX,BMI1,AVX2, SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,SENSOR,ARAT cpu0: 256KB 64b/line 8-way L2 cache cpu0: TSC frequency 3696000000 Hz 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) i3-6100 CPU @ 3.70GHz, 3696.00 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,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,SGX,BMI1,AVX2, SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,SENSOR,ARAT cpu1: 256KB 64b/line 8-way L2 cache cpu1: smt 0, core 1, package 0 cpu2 at mainbus0: apid 1 (application processor) cpu2: Intel(R) Core(TM) i3-6100 CPU @ 3.70GHz, 3696.00 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,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,SGX,BMI1,AVX2, SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,SENSOR,ARAT cpu2: 256KB 64b/line 8-way L2 cache cpu2: smt 1, core 0, package 0 cpu3 at mainbus0: apid 3 (application processor) cpu3: Intel(R) Core(TM) i3-6100 CPU @ 3.70GHz, 3696.00 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,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,SGX,BMI1,AVX2, SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,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 0xe0000000, bus 0-255 acpiprt0 at acpi0: bus 0 (PCI0) acpiprt0: no apic found for irq 32 acpiprt0: no apic found for irq 33 acpiprt0: no apic found for irq 34 acpiprt1 at acpi0: bus 1 (PEG0) acpiprt2 at acpi0: bus 2 (PEG1) acpiprt3 at acpi0: bus -1 (PEG2) acpiprt4 at acpi0: bus -1 (RP01) acpiprt5 at acpi0: bus -1 (RP02) acpiprt6 at acpi0: bus -1 (RP03) acpiprt7 at acpi0: bus -1 (RP04) acpiprt8 at acpi0: bus -1 (RP05) acpiprt9 at acpi0: bus -1 (RP06) acpiprt10 at acpi0: bus -1 (RP07) acpiprt11 at acpi0: bus -1 (RP08) acpiprt12 at acpi0: bus 3 (RP09) acpiprt13 at acpi0: bus -1 (RP10) acpiprt14 at acpi0: bus 4 (RP11) acpiprt15 at acpi0: bus -1 (RP12) acpiprt16 at acpi0: bus -1 (RP13) acpiprt17 at acpi0: bus -1 (RP14) acpiprt18 at acpi0: bus -1 (RP15) acpiprt19 at acpi0: bus -1 (RP16) acpiprt20 at acpi0: bus -1 (RP17) acpiprt21 at acpi0: bus -1 (RP18) acpiprt22 at acpi0: bus -1 (RP19) acpiprt23 at acpi0: bus -1 (RP20) acpicpu0 at acpi0: C1(@1 halt!) acpicpu1 at acpi0: C1(@1 halt!) acpicpu2 at acpi0: C1(@1 halt!) acpicpu3 at acpi0: C1(@1 halt!) "ACPI000D" at acpi0 not configured "INT3F0D" at acpi0 not configured "PNP0501" at acpi0 not configured "PNP0501" at acpi0 not configured "IPI0001" at acpi0 not configured acpibtn0 at acpi0: SLPB "PNP0C14" at acpi0 not configured "PNP0C33" at acpi0 not configured acpivideo0 at acpi0: GFX0 acpivout0 at acpivideo0: DD1F ipmi at mainbus0 not configured memory map conflict 0xe00fd000/0x1000 memory map conflict 0xfe000000/0x11000 pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 vendor "Intel", unknown product 0x190f rev 0x07 ppb0 at pci0 dev 1 function 0 "Intel Core 6G PCIE" rev 0x07: msi pci1 at ppb0 bus 1 mfii0 at pci1 dev 0 function 0 "Symbios Logic MegaRAID SAS3008" rev 0x02: msi mfii0: "PERC H330 Adapter", firmware 25.5.0.0019 scsibus1 at mfii0: 32 targets sd0 at scsibus1 targ 0 lun 0: <DELL, PERC H330 Adp, 4.27> SCSI3 0/direct fixed naa.61418770565c00001e463dcfcef6bd7b sd0: 476416MB, 512 bytes/sector, 975699968 sectors scsibus2 at mfii0: 256 targets sd1 at scsibus2 targ 0 lun 0: <ATA, TOSHIBA DT01ACA0, A7S0> SCSI4 0/direct fixed naa.5000039fe4d115d9 sd1: 476940MB, 512 bytes/sector, 976773168 sectors ppb1 at pci0 dev 1 function 1 "Intel Core 6G PCIE" rev 0x07: msi pci2 at ppb1 bus 2 xhci0 at pci0 dev 20 function 0 "Intel 100 Series xHCI" rev 0x31: 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 pchtemp0 at pci0 dev 20 function 2 "Intel 100 Series Thermal" rev 0x31 "Intel 100 Series MEI" rev 0x31 at pci0 dev 22 function 0 not configured "Intel 100 Series MEI" rev 0x31 at pci0 dev 22 function 1 not configured ahci0 at pci0 dev 23 function 0 "Intel 100 Series AHCI" rev 0x31: msi, AHCI 1.3.1 ahci0: port 4: 1.5Gb/s scsibus3 at ahci0: 32 targets cd0 at scsibus3 targ 4 lun 0: <HL-DT-ST, DVD-ROM DU90N, D3B0> ATAPI 5/cdrom removable ppb2 at pci0 dev 29 function 0 "Intel 100 Series PCIE" rev 0xf1: msi pci3 at ppb2 bus 3 3:0:0: mem address conflict 0xfffc0000/0x40000 3:0:1: mem address conflict 0xfffc0000/0x40000 bge0 at pci3 dev 0 function 0 "Broadcom BCM5720" rev 0x00, BCM5720 A0 (0x5720000), APE firmware NCSI 1.3.16.0: msi, address 34:17:eb:eb:31:5e brgphy0 at bge0 phy 1: BCM5720C 10/100/1000baseT PHY, rev. 0 bge1 at pci3 dev 0 function 1 "Broadcom BCM5720" rev 0x00, BCM5720 A0 (0x5720000), APE firmware NCSI 1.3.16.0: msi, address 34:17:eb:eb:31:5f brgphy1 at bge1 phy 2: BCM5720C 10/100/1000baseT PHY, rev. 0 ppb3 at pci0 dev 29 function 2 "Intel 100 Series PCIE" rev 0xf1: msi pci4 at ppb3 bus 4 ppb4 at pci4 dev 0 function 0 "Renesas SH7758 PCIE Switch" rev 0x00 pci5 at ppb4 bus 5 ppb5 at pci5 dev 0 function 0 "Renesas SH7758 PCIE Switch" rev 0x00 pci6 at ppb5 bus 6 ppb6 at pci6 dev 0 function 0 "Renesas SH7758 PCIE-PCI" rev 0x00 pci7 at ppb6 bus 7 vga1 at pci7 dev 0 function 0 "Matrox MGA G200eR" rev 0x01 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) pcib0 at pci0 dev 31 function 0 "Intel C236 LPC" rev 0x31 "Intel 100 Series PMC" rev 0x31 at pci0 dev 31 function 2 not configured ichiic0 at pci0 dev 31 function 4 "Intel 100 Series SMBus" rev 0x31: apic 2 int 16 iic0 at ichiic0 sdtemp0 at iic0 addr 0x19: at30tse004 sdtemp1 at iic0 addr 0x1b: at30tse004 isa0 at pcib0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo com1: console pckbc0 at isa0 port 0x60/5 irq 1 irq 12 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 vmm0 at mainbus0: VMX/EPT uhidev0 at uhub0 port 2 configuration 1 interface 0 "Avocent APC AP5631" rev 1.10/1.00 addr 2 uhidev0: iclass 3/1 ukbd0 at uhidev0: 8 variable keys, 6 key codes, country code 33 wskbd0 at ukbd0: console keyboard, using wsdisplay0 uhidev1 at uhub0 port 2 configuration 1 interface 1 "Avocent APC AP5631" rev 1.10/1.00 addr 2 uhidev1: iclass 3/1, 3 report ids ums0 at uhidev1 reportid 1: 5 buttons, Z dir wsmouse0 at ums0 mux 0 uhid0 at uhidev1 reportid 2: input=2, output=0, feature=0 uhid1 at uhidev1 reportid 3: input=1, output=0, feature=0 uhub1 at uhub0 port 3 configuration 1 interface 0 "no manufacturer Gadget USB HUB" rev 2.00/0.00 addr 3 vscsi0 at root scsibus4 at vscsi0: 256 targets softraid0 at root scsibus5 at softraid0: 256 targets root on sd0a (e3e0fbacbddfdec2.a) swap on sd0b dump on sd0b
