Two of my cpu threads are offline. Any ideas as to why or how to fix it?
tried a live ubuntu usb and all cpu threads are online.
a similar topic(link bellow) solved by enabling smt, but that does not look like the case here.
https://forums.opensuse.org/t/cpus-are-offline/152120
lscpu output:
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 48 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 24
On-line CPU(s) list: 0-5,7-17,19-23
Off-line CPU(s) list: 6,18
Vendor ID: AuthenticAMD
Model name: AMD Ryzen 9 5900X 12-Core Processor
CPU family: 25
Model: 33
Thread(s) per core: 2
Core(s) per socket: 11
Socket(s): 1
Stepping: 2
Frequency boost: enabled
CPU(s) scaling MHz: 45%
CPU max MHz: 4950.1948
CPU min MHz: 0.0000
BogoMIPS: 7402.24
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 mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid extd_apicid aperfmperf rapl p
ni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb
bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate ssbd mba ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc
cqm_mbm_total cqm_mbm_local user_shstk clzero irperf xsaveerptr rdpru wbnoinvd arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif v_spec_ctrl umip pku
ospke vaes vpclmulqdq rdpid overflow_recov succor smca fsrm debug_swap
Virtualization features:
Virtualization: AMD-V
Caches (sum of all):
L1d: 352 KiB (11 instances)
L1i: 352 KiB (11 instances)
L2: 5.5 MiB (11 instances)
L3: 64 MiB (2 instances)
NUMA:
NUMA node(s): 1
NUMA node0 CPU(s): 0-5,7-17,19-23
Vulnerabilities:
Gather data sampling: Not affected
Itlb multihit: Not affected
L1tf: Not affected
Mds: Not affected
Meltdown: Not affected
Mmio stale data: Not affected
Reg file data sampling: Not affected
Retbleed: Not affected
Spec rstack overflow: Mitigation; Safe RET
Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Spectre v2: Mitigation; Retpolines; IBPB conditional; IBRS_FW; STIBP always-on; RSB filling; PBRSB-eIBRS Not affected; BHI Not affected
Srbds: Not affected
Tsx async abort: Not affected
Journalctl output:
Jan 07 13:48:31 localhost kernel: CPU6 failed to report alive state
Jan 07 13:48:31 localhost kernel: CPU18 failed to report alive state
Jan 07 16:48:36 localhost (udev-worker)[834]: event12: Failed to call EVIOCSKEYCODE with scan code 0x7c, and key code 190: Invalid argument
Jan 07 16:48:46 localhost (udev-worker)[894]: cpu18: /usr/lib/udev/rules.d/80-hotplug-cpu-mem.rules:10 Failed to write ATTR{/sys/devices/system/cpu/cpu18/online}="1", ignoring: Input/output error
Jan 07 16:48:46 localhost kernel: CPU18 failed to report alive state
Jan 07 16:48:46 localhost kernel:
Jan 07 16:48:56 localhost (udev-worker)[866]: cpu6: /usr/lib/udev/rules.d/80-hotplug-cpu-mem.rules:10 Failed to write ATTR{/sys/devices/system/cpu/cpu6/online}="1", ignoring: Input/output error
Jan 07 16:48:56 localhost kernel: CPU6 failed to report alive state