Opened 12 days ago
Last modified 10 days ago
#22101 new defect
No CPU Information with dmidecode in VirtualBox on Debian12 — at Initial Version
Reported by: | samadhan2601 | Owned by: | |
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Component: | host support | Version: | VirtualBox-7.0.18 |
Keywords: | Cc: | ||
Guest type: | Linux | Host type: | Linux |
Description
Description:
I am experiencing an issue with obtaining detailed CPU information using the dmidecode
command on a Debian 12 virtual machine running in VirtualBox. The dmidecode
command provides only limited data, while other commands like lscpu
and cat /proc/cpuinfo
return complete CPU details.
Steps to Reproduce:
- Install Debian 12 as a guest OS in VirtualBox.
- Run the
sudo dmidecode
command to obtain hardware information.
Expected Results:
The dmidecode
command should provide detailed CPU information similar to what is provided by lscpu
and /proc/cpuinfo
.
Actual Results:
The dmidecode
command returns limited information, mostly related to the BIOS and basic system configuration. Detailed CPU information is not included.
Example Output:
Here is the output of the sudo dmidecode
command on my Debian12 VM:
# dmidecode 3.4 Getting SMBIOS data from sysfs. SMBIOS 2.5 present. 10 structures occupying 450 bytes. Table at 0x000E1000. Handle 0x0000, DMI type 0, 20 bytes BIOS Information Vendor: innotek GmbH Version: VirtualBox Release Date: 12/01/2006 Address: 0xE0000 Runtime Size: 128 kB ROM Size: 128 kB Characteristics: ISA is supported PCI is supported Boot from CD is supported Selectable boot is supported 8042 keyboard services are supported (int 9h) CGA/mono video services are supported (int 10h) ACPI is supported Handle 0x0001, DMI type 1, 27 bytes System Information Manufacturer: innotek GmbH Product Name: VirtualBox Version: 1.2 Serial Number: 0 UUID: e83f6988-828d-5142-a0e2-2bca4c199fc3 Wake-up Type: Power Switch SKU Number: Not Specified Family: Virtual Machine Handle 0x0008, DMI type 2, 15 bytes Base Board Information Manufacturer: Oracle Corporation Product Name: VirtualBox Version: 1.2 Serial Number: 0 Asset Tag: Not Specified Features: Board is a hosting board Location In Chassis: Not Specified Chassis Handle: 0x0003 Type: Motherboard Contained Object Handles: 0 Handle 0x0003, DMI type 3, 13 bytes Chassis Information Manufacturer: Oracle Corporation Type: Other Lock: Not Present Version: Not Specified Serial Number: Not Specified Asset Tag: Not Specified Boot-up State: Safe Power Supply State: Safe Thermal State: Safe Security Status: None Handle 0x0007, DMI type 126, 42 bytes Inactive Handle 0x0005, DMI type 126, 15 bytes Inactive Handle 0x0006, DMI type 126, 28 bytes Inactive Handle 0x0002, DMI type 11, 7 bytes OEM Strings String 1: vboxVer_6.1.50 String 2: vboxRev_161033 Handle 0x0004, DMI type 128, 8 bytes OEM-specific Type Header and Data: 80 08 04 00 FF C5 2A 00 Handle 0xFEFF, DMI type 127, 4 bytes End Of Table
Commands That Work: The following commands provide complete CPU details:
lscpu
cat /proc/cpuinfo
Example lscpu
Output:
root@faiserver:~# lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Address sizes: 39 bits physical, 48 bits virtual Byte Order: Little Endian CPU(s): 1 On-line CPU(s) list: 0 Vendor ID: GenuineIntel Model name: 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz BIOS Model name: CPU @ 0.0GHz BIOS CPU family: 0 CPU family: 6 Model: 140 Thread(s) per core: 1 Core(s) per socket: 1 Socket(s): 1 Stepping: 1 BogoMIPS: 5606.39 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse ss e2 ht syscall nx rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid tsc_known_fre q pni pclmulqdq monitor ssse3 cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx rdrand hypervisor lahf_lm abm 3dnowprefetch invpcid_single pti fsgsbase avx2 invpcid rdseed clflushopt md_clear flush_l1d arch_capabilities Virtualization features: Hypervisor vendor: KVM Virtualization type: full Caches (sum of all): L1d: 48 KiB (1 instance) L1i: 32 KiB (1 instance) L2: 1.3 MiB (1 instance) L3: 12 MiB (1 instance) NUMA: NUMA node(s): 1 NUMA node0 CPU(s): 0 Vulnerabilities: Gather data sampling: Unknown: Dependent on hypervisor status Itlb multihit: KVM: Mitigation: VMX unsupported L1tf: Mitigation; PTE Inversion Mds: Mitigation; Clear CPU buffers; SMT Host state unknown Meltdown: Mitigation; PTI Mmio stale data: Not affected Retbleed: Not affected Spec rstack overflow: Not affected Spec store bypass: Vulnerable Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization Spectre v2: Mitigation; Retpolines, STIBP disabled, RSB filling, PBRSB-eIBRS Not affected Srbds: Not affected Tsx async abort: Not affected root@faiserver:~#
Example /proc/cpuinfo
Output:
root@faiserver:~# cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 140 model name : 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz stepping : 1 cpu MHz : 2803.198 cache size : 12288 KB physical id : 0 siblings : 1 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 22 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid tsc_known_freq pni pclmulqdq monitor ssse3 cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx rdrand hypervisor lahf_lm abm 3dnowprefetch invpcid_single pti fsgsbase avx2 invpcid rdseed clflushopt md_clear flush_l1d arch_capabilities bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs itlb_multihit gds bogomips : 5606.39 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: root@faiserver:~#
BIOS/UEFI Version
root@faiserver:~# sudo dmidecode -t bios # dmidecode 3.4 Getting SMBIOS data from sysfs. SMBIOS 2.5 present. Handle 0x0000, DMI type 0, 20 bytes BIOS Information Vendor: innotek GmbH Version: VirtualBox Release Date: 12/01/2006 Address: 0xE0000 Runtime Size: 128 kB ROM Size: 128 kB Characteristics: ISA is supported PCI is supported Boot from CD is supported Selectable boot is supported 8042 keyboard services are supported (int 9h) CGA/mono video services are supported (int 10h) ACPI is supported root@faiserver:~#
Request for Assistance:
- Is there a way to configure VirtualBox to expose more detailed SMBIOS information to the guest OS?
- Are there any settings or additional steps that can be taken to enable
dmidecode
to retrieve full CPU information in a VirtualBox VM? - Any insights or suggestions to address this issue would be greatly appreciated.
Thank you for your assistance.
Change History (2)
by , 12 days ago
Attachment: | Screenshot 2024-06-23 161133.png added |
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by , 12 days ago
Attachment: | ECR_Mirror_Host_BIOS_FIRMWARE.png added |
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BIOS/UEFI Version from Linux Host
VirtualBox CPU Setting