Toldi Balázs wrote: > Hello! > > In my current PC I have 16 GB of RAM installed. It worked fine until > today, when I upgraded my CPU from a Ryzen 5 1500X to a Ryzen 7 2700. > The system boots up just fine, but when I use the free command the > total memory is only 8 GB. When I looked into the BIOS, it showed me > the correct amount. What should I do? > > Output of some relevant commands: > > free -h > > total used free shared buff/cache > available > Mem: 7,8Gi 4,4Gi 874Mi 192Mi 2,5Gi > 3,1Gi > > cat /proc/meminfo > > MemTotal: 8158220 kB > MemFree: 910036 kB > MemAvailable: 3275008 kB > Buffers: 2848 kB > Cached: 2492392 kB > SwapCached: 260 kB > Active: 1622988 kB > Inactive: 4198676 kB > Active(anon): 9500 kB > Inactive(anon): 3507660 kB > Active(file): 1613488 kB > Inactive(file): 691016 kB > Unevictable: 64 kB > Mlocked: 64 kB > SwapTotal: 16777212 kB > SwapFree: 16775140 kB > Dirty: 732 kB > Writeback: 0 kB > AnonPages: 3326444 kB > Mapped: 1322720 kB > Shmem: 193816 kB > KReclaimable: 160248 kB > Slab: 556240 kB > SReclaimable: 160248 kB > SUnreclaim: 395992 kB > KernelStack: 32704 kB > PageTables: 58964 kB > NFS_Unstable: 0 kB > Bounce: 0 kB > WritebackTmp: 0 kB > CommitLimit: 20856320 kB > Committed_AS: 15151980 kB > VmallocTotal: 34359738367 kB > VmallocUsed: 260776 kB > VmallocChunk: 0 kB > Percpu: 10944 kB > HugePages_Total: 0 > HugePages_Free: 0 > HugePages_Rsvd: 0 > HugePages_Surp: 0 > Hugepagesize: 2048 kB > Hugetlb: 0 kB > DirectMap4k: 1638688 kB > DirectMap2M: 6699008 kB > DirectMap1G: 1048576 kB > > > lshw -C memory > > *-memory > description: System Memory > physical id: 27 > slot: System board or motherboard > size: 7967MiB > *-bank:0 > description: [empty] > product: Unknown > vendor: Unknown > physical id: 0 > serial: Unknown > slot: DIMM 0 > *-bank:1 > description: DIMM DDR4 Synchronous Unbuffered (Unregistered) > 2400 MHz (0,4 ns) [empty] > product: 9905702-120.A00G > vendor: Kingston > physical id: 1 > serial: EE963485 > slot: DIMM 1 > width: 64 bits > clock: 2400MHz (0.4ns) > *-bank:2 > description: [empty] > product: Unknown > vendor: Unknown > physical id: 2 > serial: Unknown > slot: DIMM 0 > *-bank:3 > description: DIMM DDR4 Synchronous Unbuffered (Unregistered) > 2400 MHz (0,4 ns) [empty] > product: Unknown > vendor: Unknown > physical id: 3 > serial: 08240800 > slot: DIMM 1 > width: 64 bits > clock: 2400MHz (0.4ns) > > > uname -a > > Linux GlaDOS 5.10.27-gentoo #4 SMP Thu Jun 3 18:19:23 CEST 2021 x86_64 > AMD Ryzen 7 2700 Eight-Core Processor AuthenticAMD GNU/Linux > > > >
Could this be a kernel setting issue? If you boot some other media like a USB stick, DVD/CD or something, does it show the right amount then? If it does, could be a kernel setting. If not, interesting problem. If the BIOS sees it, I doubt it is a hardware issue. It may not rule it out 100% but not likely. It's amazing that things like this still occur when large amounts of memory has been around for a good while now. Hope that helps? Dale :-) :-)
