Googling I found that this error has to do with input–output memory management unit (IOMMU) and that the BIOS has no entry for IOMMU settings.
I tried to report a bug but could not login : it kept on telling me there was already an account...used same credentials as for the forum and failed....Sorry to post it here in the forum.
If somebody with knowledge about this errors could help would be great. I have researched and found no solution for this error.
Thanks...
PS.Cannot attach file to this post due to rules
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sudo journalctl -p 3 -xb
localhost.localdomain kernel: pci 0000:00:00.2: AMD-Vi: Unable to read/write to IOMMU perf counter.
Aug 09 17:50:46 localhost.localdomain kernel: tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does not cover the entire command/response buffer. [mem 0xdd511000-0xdd511fff flags 0x200] vs dd511000 4000
Aug 09 17:50:46 localhost.localdomain kernel: tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does not cover the entire command/response buffer. [mem 0xdd515000-0xdd515fff flags 0x200] vs dd515000 4000
Aug 09 17:50:46 localhost.localdomain kernel: sp5100-tco sp5100-tco: Watchdog hardware is disabled
Aug 09 17:50:48 localhost.localdomain kernel: blk_update_request: I/O error, dev sdb, sector 250082288 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
Aug 09 17:50:49 localhost.localdomain bluetoothd[804]: Failed to set mode: Blocked through rfkill (0x12)
Aug 09 17:50:55 localhost.localdomain sddm-helper[1116]: gkr-pam: unable to locate daemon control file
Aug 09 17:50:57 localhost.localdomain bluetoothd[804]: Failed to set mode: Blocked through rfkill (0x12)
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lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
Address sizes: 43 bits physical, 48 bits virtual
CPU(s): 8
On-line CPU(s) list: 0-7
Thread(s) per core: 2
Core(s) per socket: 4
Socket(s): 1
NUMA node(s): 1
Vendor ID: AuthenticAMD
CPU family: 23
Model: 24
Model name: AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx
Stepping: 1
Frequency boost: enabled
CPU MHz: 1134.536
CPU max MHz: 2100.0000
CPU min MHz: 1400.0000
BogoMIPS: 4192.31
Virtualization: AMD-V
L1d cache: 128 KiB
L1i cache: 256 KiB
L2 cache: 2 MiB
L3 cache: 4 MiB
NUMA node0 CPU(s): 0-7
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp
Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2: Mitigation; Full AMD retpoline, IBPB conditional, STIBP disabled, RSB filling
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected
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 nonstop_ts
c cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignss
e 3dnowprefetch osvw skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb hw_pstate sme ssbd sev ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflu
shopt sha_ni xsaveopt xsavec xgetbv1 xsaves clzero irperf xsaveerptr arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vms
ave_vmload vgif overflow_recov succor smca
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