Hi,
I have bought a second-hand Dell Latitude 5420 laptop, updated its bios to the
latest official one (1.50) and installed OpenBSD on it. It works, however the
em0 is missing. Looking in dmesg reveals:
em0 at pci0 dev 31 function 6 "Intel I219-LM" rev 0x20: msiem0: The EEPROM
Checksum Is Not Valid
em0: Unable to initialize the hardware
According to man em0 this hw should be supported .
Internet say it have something to do with power management, I have attempted to
toggle every related setting in the BIOS, but no dice.
dmesg:
OpenBSD 7.8 (GENERIC.MP) #1: Sat Nov 29 11:02:59 MST 2025
[email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 16883916800 (16101MB)
avail mem = 16345370624 (15588MB)
random: good seed from bootblocks
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 3.2 @ 0x600e4000 (69 entries)
bios0: vendor Dell Inc. version "1.50.0" date 11/25/2025
bios0: Dell Inc. Latitude 5420
efi0 at bios0: UEFI 2.7
efi0: Dell rev 0x10000
acpi0 at bios0: ACPI 6.1
acpi0: sleep states S0ix S4 S5
acpi0: tables DSDT FACP SSDT SSDT HPET APIC SSDT NHLT SSDT SSDT SSDT SSDT LPIT
WSMT SSDT SSDT DBGP DBG2 BOOT MSDM DMAR SSDT MCFG SSDT ASF! PTDT BGRT FPDT
acpi0: wakeup devices PEG0(S4) PEGP(S4) PEGP(S4) PEGP(S4) GLAN(S4) XHCI(S0)
XDCI(S4) HDAS(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: 19200000 Hz
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: 11th Gen Intel(R) Core(TM) i5-1145G7 @ 2.60GHz, 4389.88 MHz, 06-8c-01,
patch 000000be
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=77fafbff<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>
cpu0: cpuid 6 eax=17eff7<SENSOR,ARAT,PTS> ecx=9<EFFFREQ>
cpu0: cpuid 7.0
ebx=f3bfa7eb<FSGSBASE,TSC_ADJUST,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,AVX512F,AVX512DQ,RDSEED,ADX,SMAP,AVX512IFMA,CLFLUSHOPT,CLWB,PT,AVX512CD,SHA,AVX512BW,AVX512VL>
ecx=18c07fce<AVX512VBMI,UMIP,PKU>
edx=fc100710<SRBDS_CTRL,MD_CLEAR,IBT,IBRS,IBPB,STIBP,L1DF,SSBD>
cpu0: cpuid a vers=5, gp=8, gpwidth=48, ff=4, ffwidth=48
cpu0: cpuid d.1 eax=f<XSAVEOPT,XSAVEC,XGETBV1,XSAVES>
cpu0: cpuid 80000001 edx=2c100800<NXE,PAGE1GB,RDTSCP,LONG>
ecx=121<LAHF,ABM,3DNOWP>
cpu0: cpuid 80000007 edx=100<ITSC>
cpu0: msr
10a=a005c6b<IBRS_ALL,SKIP_L1DFL,MDS_NO,IF_PSCHANGE,MISC_PKG_CT,ENERGY_FILT,DOITM,FBSDP_NO,GDS_CTRL,RFDS_NO>
cpu0: 48KB 64b/line 12-way D-cache, 32KB 64b/line 8-way I-cache, 1MB 64b/line
20-way L2 cache, 8MB 64b/line 8-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 38MHz
cpu0: mwait min=64, max=64, C-substates=0.2.0.1.2.1.1.1, IBE
cpu1 at mainbus0: apid 2 (application processor)
cpu1: 11th Gen Intel(R) Core(TM) i5-1145G7 @ 2.60GHz, 4389.88 MHz, 06-8c-01,
patch 000000be
cpu1: smt 0, core 1, package 0
cpu2 at mainbus0: apid 4 (application processor)
cpu2: 11th Gen Intel(R) Core(TM) i5-1145G7 @ 2.60GHz, 3990.80 MHz, 06-8c-01,
patch 000000be
cpu2: smt 0, core 2, package 0
cpu3 at mainbus0: apid 6 (application processor)
cpu3: 11th Gen Intel(R) Core(TM) i5-1145G7 @ 2.60GHz, 3990.80 MHz, 06-8c-01,
patch 000000be
cpu3: smt 0, core 3, package 0
cpu4 at mainbus0: apid 1 (application processor)
cpu4: 11th Gen Intel(R) Core(TM) i5-1145G7 @ 2.60GHz, 3990.80 MHz, 06-8c-01,
patch 000000be
cpu4: smt 1, core 0, package 0
cpu5 at mainbus0: apid 3 (application processor)
cpu5: 11th Gen Intel(R) Core(TM) i5-1145G7 @ 2.60GHz, 3990.80 MHz, 06-8c-01,
patch 000000be
cpu5: smt 1, core 1, package 0
cpu6 at mainbus0: apid 5 (application processor)
cpu6: 11th Gen Intel(R) Core(TM) i5-1145G7 @ 2.60GHz, 3990.80 MHz, 06-8c-01,
patch 000000be
cpu6: smt 1, core 2, package 0
cpu7 at mainbus0: apid 7 (application processor)
cpu7: 11th Gen Intel(R) Core(TM) i5-1145G7 @ 2.60GHz, 3954.73 MHz, 06-8c-01,
patch 000000be
cpu7: smt 1, core 3, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 120 pins
acpimcfg0 at acpi0
acpimcfg0: addr 0xc0000000, bus 0-114
acpiprt0 at acpi0: bus 0 (PC00)
acpiprt1 at acpi0: bus -1 (PEG0)
acpiprt2 at acpi0: bus -1 (RP01)
acpiprt3 at acpi0: bus -1 (RP02)
acpiprt4 at acpi0: bus -1 (RP03)
acpiprt5 at acpi0: bus -1 (RP04)
acpiprt6 at acpi0: bus -1 (RP05)
acpiprt7 at acpi0: bus -1 (RP06)
acpiprt8 at acpi0: bus 113 (RP07)
acpiprt9 at acpi0: bus -1 (RP08)
acpiprt10 at acpi0: bus 114 (RP09)
acpiprt11 at acpi0: bus -1 (RP10)
acpiprt12 at acpi0: bus -1 (RP11)
acpiprt13 at acpi0: bus -1 (RP12)
acpiprt14 at acpi0: bus -1 (RP13)
acpiprt15 at acpi0: bus -1 (RP14)
acpiprt16 at acpi0: bus -1 (RP15)
acpiprt17 at acpi0: bus -1 (RP16)
acpiprt18 at acpi0: bus -1 (RP17)
acpiprt19 at acpi0: bus -1 (RP18)
acpiprt20 at acpi0: bus -1 (RP19)
acpiprt21 at acpi0: bus -1 (RP20)
acpiprt22 at acpi0: bus -1 (RP21)
acpiprt23 at acpi0: bus -1 (RP22)
acpiprt24 at acpi0: bus -1 (RP23)
acpiprt25 at acpi0: bus -1 (RP24)
acpiprt26 at acpi0: bus 1 (TRP0)
acpiprt27 at acpi0: bus 57 (TRP1)
acpiec0 at acpi0
acpipci0 at acpi0 PC00: 0x00000000 0x00000011 0x00000001
acpicmos0 at acpi0
"INTC1043" at acpi0 not configured
"INTC1043" at acpi0 not configured
"INTC1043" at acpi0 not configured
"DLLK0A20" at acpi0 not configured
"DLL0A20" at acpi0 not configured
"DELL0A20" at acpi0 not configured
"SONY488A" at acpi0 not configured
"SONY362A" at acpi0 not configured
"ACPI000E" at acpi0 not configured
pchgpio0 at acpi0 GPI0 addr 0xfd6e0000/0x10000 0xfd6d0000/0x10000
0xfd6a0000/0x10000 0xfd690000/0x10000 irq 14, 360 pins
"PNP0C14" at acpi0 not configured
"PNP0C14" at acpi0 not configured
intelpmc0 at acpi0: PEPD
state 0: 0x7f:1:2:0x00:0x0000000000000060
counter: 0x7f:64:0:0x00:0x0000000000000632
frequency: 0
state 1: 0x7f:1:2:0x00:0x0000000000000060
counter: 0x00:32:0:0x03:0x00000000fe00193c
frequency: 8197
"PNP0C14" at acpi0 not configured
"PNP0C14" at acpi0 not configured
"PNP0C14" at acpi0 not configured
"PNP0C14" at acpi0 not configured
"PNP0C14" at acpi0 not configured
acpibtn0 at acpi0: LID0(wakeup)
acpibtn1 at acpi0: PBTN(wakeup)
acpibtn2 at acpi0: SBTN
acpiac0 at acpi0: AC unit online
acpibat0 at acpi0: BAT0 model "DELL M3KCN11" serial 869 type LiP oem "BYD"
"INTC1051" at acpi0 not configured
"INTC1040" at acpi0 not configured
"USBC000" at acpi0 not configured
acpipwrres0 at acpi0: BTRT
acpipwrres1 at acpi0: MRST
acpipwrres2 at acpi0: DRST
acpipwrres3 at acpi0: PXP_, resource for RP05, PXSX
acpipwrres4 at acpi0: V0PR
acpipwrres5 at acpi0: V1PR
acpipwrres6 at acpi0: V2PR
acpipwrres7 at acpi0: WRST
acpipwrres8 at acpi0: TBT0, resource for TDM0, TRP0, TRP1
acpipwrres9 at acpi0: TBT1, resource for TDM1, TRP2, TRP3
acpipwrres10 at acpi0: D3C_, resource for TXHC, TDM0, TDM1, TRP0, TRP1, TRP2,
TRP3
acpicpu0 at acpi0: C3(200@1048 mwait.1@0x60), C2(200@253 mwait.1@0x31),
C1(1000@1 mwait.1), PSS
acpicpu1 at acpi0: C3(200@1048 mwait.1@0x60), C2(200@253 mwait.1@0x31),
C1(1000@1 mwait.1), PSS
acpicpu2 at acpi0: C3(200@1048 mwait.1@0x60), C2(200@253 mwait.1@0x31),
C1(1000@1 mwait.1), PSS
acpicpu3 at acpi0: C3(200@1048 mwait.1@0x60), C2(200@253 mwait.1@0x31),
C1(1000@1 mwait.1), PSS
acpicpu4 at acpi0: C3(200@1048 mwait.1@0x60), C2(200@253 mwait.1@0x31),
C1(1000@1 mwait.1), PSS
acpicpu5 at acpi0: C3(200@1048 mwait.1@0x60), C2(200@253 mwait.1@0x31),
C1(1000@1 mwait.1), PSS
acpicpu6 at acpi0: C3(200@1048 mwait.1@0x60), C2(200@253 mwait.1@0x31),
C1(1000@1 mwait.1), PSS
acpicpu7 at acpi0: C3(200@1048 mwait.1@0x60), C2(200@253 mwait.1@0x31),
C1(1000@1 mwait.1), PSS
acpipwrres11 at acpi0: PIN_
acpivideo0 at acpi0: GFX0
acpivout0 at acpivideo0: LCD_
cpu0: Enhanced SpeedStep 4389 MHz: speeds: 1501, 1500, 1400, 1300, 1200, 1100,
1000, 900, 800, 700, 600, 500, 400 MHz
pci0 at mainbus0 bus 0
0:31:5: mem address conflict 0xfe010000/0x1000
pchb0 at pci0 dev 0 function 0 "Intel Core 11G Host" rev 0x01
inteldrm0 at pci0 dev 2 function 0 "Intel Xe Graphics" rev 0x01
drm0 at inteldrm0
inteldrm0: msi, TIGERLAKE, gen 12
"Intel Core 11G DTT" rev 0x01 at pci0 dev 4 function 0 not configured
ppb0 at pci0 dev 7 function 0 "Intel Core 11G PCIE" rev 0x01: msi
pci1 at ppb0 bus 1
ppb1 at pci0 dev 7 function 1 "Intel Core 11G PCIE" rev 0x01: msi
pci2 at ppb1 bus 57
"Intel Core 11G SRAM" rev 0x01 at pci0 dev 10 function 0 not configured
xhci0 at pci0 dev 13 function 0 "Intel Core 11G xHCI" rev 0x01: msi, xHCI 1.20
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 Core 11G TBT" rev 0x01 at pci0 dev 13 function 2 not configured
"Intel 500 Series ISH" rev 0x20 at pci0 dev 18 function 0 not configured
xhci1 at pci0 dev 20 function 0 "Intel 500 Series xHCI" rev 0x20: msi, xHCI 1.20
usb1 at xhci1: USB revision 3.0
uhub1 at usb1 configuration 1 interface 0 "Intel xHCI root hub" rev 3.00/1.00
addr 1
"Intel 500 Series Shared SRAM" rev 0x20 at pci0 dev 20 function 2 not configured
iwx0 at pci0 dev 20 function 3 "Intel Wi-Fi 6 AX201" rev 0x20, msix
dwiic0 at pci0 dev 21 function 0 "Intel 500 Series I2C" rev 0x20: apic 2 int 27
iic0 at dwiic0
dwiic1 at pci0 dev 21 function 1 "Intel 500 Series I2C" rev 0x20: apic 2 int 40
iic1 at dwiic1
ihidev0 at iic1 addr 0x2c gpio 327, vendor 0x6cb product 0xce65, DELL0A20
ihidev0: 15 report ids
imt0 at ihidev0: clickpad, 5 contacts
wsmouse0 at imt0 mux 0
ims0 at ihidev0 reportid 2: 2 buttons
wsmouse1 at ims0 mux 0
hid at ihidev0 reportid 6 not configured
hid at ihidev0 reportid 7 not configured
hid at ihidev0 reportid 9 not configured
hid at ihidev0 reportid 10 not configured
hid at ihidev0 reportid 11 not configured
hid at ihidev0 reportid 12 not configured
hid at ihidev0 reportid 13 not configured
hid at ihidev0 reportid 14 not configured
hid at ihidev0 reportid 15 not configured
"Intel 500 Series HECI" rev 0x20 at pci0 dev 22 function 0 not configured
ppb2 at pci0 dev 28 function 0 "Intel 500 Series PCIE" rev 0x20: msi
pci3 at ppb2 bus 113
rtsx0 at pci3 dev 0 function 0 "Realtek RTS525A Card Reader" rev 0x01: msi
sdmmc0 at rtsx0: 4-bit, dma
ppb3 at pci0 dev 29 function 0 "Intel 500 Series PCIE" rev 0x20: msi
pci4 at ppb3 bus 114
nvme0 at pci4 dev 0 function 0 "Samsung SM981/PM981" rev 0x00: msix, NVMe 1.2
nvme0: SAMSUNG MZVLB256HAHQ-000L7, firmware 1L2QEXD7, serial ABCD
scsibus1 at nvme0: 2 targets, initiator 0
sd0 at scsibus1 targ 1 lun 0: <NVMe, SAMSUNG MZVLB256, 1L2Q>
sd0: 244198MB, 512 bytes/sector, 500118192 sectors
pcib0 at pci0 dev 31 function 0 "Intel 500 Series eSPI" rev 0x20
azalia0 at pci0 dev 31 function 3 "Intel 500 Series HD Audio" rev 0x20: msi
azalia0: codecs: Realtek ALC3204, Intel/0x2812, using Realtek ALC3204
audio0 at azalia0
ichiic0 at pci0 dev 31 function 4 "Intel 500 Series SMBus" rev 0x20: apic 2 int
16
iic2 at ichiic0
spdmem0 at iic2 addr 0x52: 16GB DDR4 SDRAM PC4-25600 SO-DIMM
"Intel 500 Series SPI" rev 0x20 at pci0 dev 31 function 5 not configured
em0 at pci0 dev 31 function 6 "Intel I219-LM" rev 0x20: msiem0: The EEPROM
Checksum Is Not Valid
em0: Unable to initialize the hardware
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
pms0 at pckbc0 (aux slot)
wsmouse2 at pms0 mux 0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
vmm0 at mainbus0: VMX/EPT
efifb at mainbus0 not configured
uhub2 at uhub1 port 2 configuration 1 interface 0 "Cambridge Silicon Radio
product 0x4010" rev 2.00/20.87 addr 2
uhidev0 at uhub2 port 1 configuration 1 interface 0 "Creative Creative BT-W5"
rev 2.00/10.00 addr 3
uhidev0: iclass 3/0, 32 report ids
ucc0 at uhidev0 reportid 1: 11 usages, 7 keys, enum
wskbd1 at ucc0 mux 1
uhid0 at uhidev0 reportid 2: input=2, output=0, feature=0
uhid1 at uhidev0 reportid 3: input=64, output=64, feature=0
uhid2 at uhidev0 reportid 9: input=0, output=1, feature=0
uhid3 at uhidev0 reportid 23: input=0, output=1, feature=0
uhid4 at uhidev0 reportid 24: input=0, output=1, feature=0
uhid5 at uhidev0 reportid 32: input=0, output=1, feature=0
uhidev1 at uhub2 port 1 configuration 1 interface 1 "Creative Creative BT-W5"
rev 2.00/10.00 addr 3
uhidev1: iclass 3/0, 9 report ids
uhid6 at uhidev1 reportid 1: input=0, output=62, feature=0
uhid7 at uhidev1 reportid 2: input=16, output=0, feature=0
uhid8 at uhidev1 reportid 3: input=0, output=0, feature=62
uhid9 at uhidev1 reportid 4: input=0, output=0, feature=62
uhid10 at uhidev1 reportid 5: input=0, output=254, feature=0
uhid11 at uhidev1 reportid 6: input=12, output=0, feature=0
uhid12 at uhidev1 reportid 7: input=0, output=255, feature=0
uhid13 at uhidev1 reportid 8: input=255, output=0, feature=0
uhid14 at uhidev1 reportid 9: input=11, output=0, feature=0
uaudio0 at uhub2 port 1 configuration 1 interface 3 "Creative Creative BT-W5"
rev 2.00/10.00 addr 3
uaudio0: class v1, full-speed, sync, channels: 2 play, 1 rec, 3 ctls
audio1 at uaudio0
uhidev2 at uhub1 port 3 configuration 1 interface 0 "Logitech USB Receiver" rev
2.00/24.11 addr 4
uhidev2: iclass 3/1
ukbd0 at uhidev2: 8 variable keys, 6 key codes
wskbd2 at ukbd0 mux 1
uhidev3 at uhub1 port 3 configuration 1 interface 1 "Logitech USB Receiver" rev
2.00/24.11 addr 4
uhidev3: iclass 3/1, 8 report ids
ums0 at uhidev3 reportid 2: 16 buttons, Z and W dir
wsmouse3 at ums0 mux 0
ucc1 at uhidev3 reportid 3: 767 usages, 20 keys, array
wskbd3 at ucc1 mux 1
uhid15 at uhidev3 reportid 4: input=1, output=0, feature=0
uhid16 at uhidev3 reportid 8: input=1, output=0, feature=0
uhidev4 at uhub1 port 3 configuration 1 interface 2 "Logitech USB Receiver" rev
2.00/24.11 addr 4
uhidev4: iclass 3/0, 33 report ids
uhidpp0 at uhidev4 device 1 mouse "MX Anywhere 3"
uhid17 at uhidev4 reportid 32: input=14, output=14, feature=0
uhid18 at uhidev4 reportid 33: input=31, output=31, feature=0
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
sd1 at scsibus3 targ 1 lun 0: <OPENBSD, SR CRYPTO, 006>
sd1: 243938MB, 512 bytes/sector, 499585087 sectors
root on sd1a (cf5e3171e2d22fb8.a) swap on sd1b dump on sd1b
inteldrm0: 1920x1080, 32bpp
wsdisplay0 at inteldrm0 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)
iwx0: hw rev 0x350, fw 77.a20fb07d.0, address RE:DA:CT:ED
wskbd1: disconnecting from wsdisplay0
