Hi everyone,
I’m having an issue with the option “Ignore vendor programmed fuses
that limit max. DRAM frequency”. When I enable said option my laptop
will turn on but the screen stays black and “nothing” happens. The
only option to recover the laptop is to install a 1600MHz stick,
that will limit the other 2133MHz stick to 1600MHz and to reflash a
coreboot build
with above mentioned option turned off.
My laptop is a Lenovo Thinkpad T430 without a dGPU (i.e. only Intel
HD4000 iGPU). As far as I can recall the memory worked at its
maximum frequency (2133MHz) fine when using the Lenovo OEM BIOS.
I’m using coreboot v4.12 with SeaBIOS v1.13.0 and use libgfxinit. I
also tried using the VGA option ROM but to no avail.
I've appended the output of dmidecode -t memory and dmidecode
-t processor and uname -r below.
Does anyone else has this issue?
How do I debug this issue?
Evgeny Zinoviev pointed me some time ago to the optional use of the
mrc.bin for the X220 [1] and someone trying to use the mrc.bin for
the T430 [2]. Could I somehow use the mrc.bin approach for the X220
in [2] in conjunction with [1] and [3] to allow the optional use of
the mrc.bin for the T430?
Kind regards
lhochstetter
[1] https://review.coreboot.org/c/coreboot/+/37153
[2] https://review.coreboot.org/c/coreboot/+/23489
[3] https://review.coreboot.org/c/coreboot/+/32500
---
uname -r:
4.19.0-11-amd64 (Debian 4.19.146-1)
Here is the output of dmidecode -t memory and dmidecode
-t processor:
# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 2.8 present.
Handle 0x000A, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0000
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: SODIMM
Set: None
Locator: Channel-0-DIMM-0
Bank Locator: BANK 0
Type: DDR3
Type Detail: Synchronous
Speed: 800 MT/s
Manufacturer: Kingston
Serial Number: 4a2d6e3a
Asset Tag: Not Specified
Part Number: KHX2133C11S3L/8G
Rank: 2
Configured Memory Speed: 800 MT/s
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: Unknown
Handle 0x000B, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0000
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: SODIMM
Set: None
Locator: Channel-1-DIMM-0
Bank Locator: BANK 0
Type: DDR3
Type Detail: Synchronous
Speed: 800 MT/s
Manufacturer: Kingston
Serial Number: 4b2d703a
Asset Tag: Not Specified
Part Number: KHX2133C11S3L/8G
Rank: 2
Configured Memory Speed: 800 MT/s
Minimum Voltage: Unknown
Maximum Voltage: Unknown
Configured Voltage: Unknown
Handle 0x0004, DMI type 4, 42 bytes
Processor Information
Socket Designation: Not Specified
Type: Central Processor
Family: Pentium Pro
Manufacturer: GenuineIntel
ID: A9 06 03 00 FF FB EB BF
Signature: Type 0, Family 6, Model 58, Stepping 9
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (FXSAVE and FXSTOR instructions supported)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Multi-threading)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Intel(R) Core(TM) i7-3840QM CPU @ 2.80GHz
Voltage: Unknown
External Clock: Unknown
Max Speed: Unknown
Current Speed: Unknown
Status: Unpopulated
Upgrade: Unknown
L1 Cache Handle: 0x0006
L2 Cache Handle: 0x0007
L3 Cache Handle: 0x0008
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Core Count: 4
Core Enabled: 4
Characteristics: None