64-битная установка Ubuntu не распознает более 2,9 ГБ ОЗУ

Мой BIOS распознает 4 ГБ, Ubuntu 13.10 видит только 2,9 ГБ. Я использую материнскую плату ASRock FM2A75 Pro4-M, 4 ГБ общей оперативной памяти и AMD A6-5400K.

Я обновился до ядра 3.12.3, без изменений.

Вывод uname-m

x86_64

Вывод free -m

             total       used       free     shared    buffers     cached
Mem:          2962       1159       1803          0         28        318
-/+ buffers/cache:        812       2150
Swap:         3905          0       3905

вывод sudo lshw

description: Desktop Computer
product: To Be Filled By O.E.M. (To Be Filled By O.E.M.)
vendor: To Be Filled By O.E.M.
version: To Be Filled By O.E.M.
serial: To Be Filled By O.E.M.
width: 64 bits
capabilities: smbios-2.7 dmi-2.7 vsyscall32
configuration: boot=normal chassis=desktop family=To Be Filled By O.E.M. sku=To Be     Filled By O.E.M. uuid=00020003-0004-0005-0006-000700080009
  *-core
   description: Motherboard
   product: FM2A75 Pro4-M
   vendor: ASRock
   physical id: 0
   serial: E80-2B019800452
 *-firmware
      description: BIOS
      vendor: American Megatrends Inc.
      physical id: 0
      version: P1.80
      date: 11/02/2012
      size: 64KiB
      capacity: 8128KiB
      capabilities: pci upgrade shadowing cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer acpi usb biosbootspecification uefi
 *-memory
      description: System Memory
      physical id: 9
      slot: System board or motherboard
      size: 4GiB
    *-bank:0
         description: DIMM DDR3 Synchronous 667 MHz (1.5 ns)
         product: EBJ21UE8BDF0-DJ-F
         vendor: Elpida
         physical id: 0
         serial: E0973A4A
         slot: A1_DIMM0
         size: 2GiB
         width: 64 bits
         clock: 667MHz (1.5ns)
    *-bank:1
         description: DIMM [empty]
         product: Array1_PartNumber1
         vendor: A1_Manufacturer1
         physical id: 1
         serial: A1_SerNum1
         slot: A1_DIMM1
    *-bank:2
         description: DIMM DDR3 Synchronous 667 MHz (1.5 ns)
         product: EBJ20UF8BCF0-DJ-F
         vendor: Elpida
         physical id: 2
         serial: E037024F
         slot: A1_DIMM2
         size: 2GiB
         width: 64 bits
         clock: 667MHz (1.5ns)
    *-bank:3
         description: DIMM [empty]
         product: Array1_PartNumber3
         vendor: A1_Manufacturer3
         physical id: 3
         serial: A1_SerNum3
         slot: A1_DIMM3
 *-cache:0
      description: L1 cache
      physical id: 14
      slot: L1 CACHE
      size: 96KiB
      capacity: 96KiB
      clock: 1GHz (1.0ns)
      capabilities: pipeline-burst internal write-back unified
 *-cache:1
      description: L2 cache
      physical id: 15
      slot: L2 CACHE
      size: 1MiB
      capacity: 1MiB
      clock: 1GHz (1.0ns)
      capabilities: pipeline-burst internal write-back unified
 *-cpu
      description: CPU
      product: AMD A6-5400K APU with Radeon(tm) HD Graphics
      vendor: Advanced Micro Devices [AMD]
      physical id: 1f
      bus info: cpu@0
      version: AMD A6-5400K APU with Radeon(tm) HD Graphics
      slot: CPUSocket
      size: 2400MHz
      capacity: 3600MHz
      width: 64 bits
      clock: 100MHz
      capabilities: x86-64 fpu fpu_exception wp 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 constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb arat cpb hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold bmi1 cpufreq
      configuration: cores=2 enabledcores=2 threads=2
 *-pci:0
      description: Host bridge
      product: Family 15h (Models 10h-1fh) Processor Root Complex
      vendor: Advanced Micro Devices, Inc. [AMD]
      physical id: 100
      bus info: pci@0000:00:00.0
      version: 00
      width: 32 bits
      clock: 66MHz
    *-pci:0
         description: PCI bridge
         product: Family 15h (Models 10h-1fh) Processor Root Port
         vendor: Advanced Micro Devices, Inc. [AMD]
         physical id: 2
         bus info: pci@0000:00:02.0
         version: 00
         width: 32 bits
         clock: 33MHz
         capabilities: pci pm pciexpress msi ht normal_decode bus_master cap_list
         configuration: driver=pcieport
         resources: irq:18 ioport:e000(size=4096) memory:fd000000-fe0fffff ioport:c0000000(size=301989888)
       *-display
            description: VGA compatible controller
            product: GK107 [GeForce GTX 650]
            vendor: NVIDIA Corporation
            physical id: 0
            bus info: pci@0000:01:00.0
            version: a1
            width: 64 bits
            clock: 33MHz
            capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
            configuration: driver=nvidia latency=0
            resources: irq:18 memory:fd000000-fdffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:e000(size=128) memory:fe000000-fe07ffff
       *-multimedia
            description: Audio device
            product: GK107 HDMI Audio Controller
            vendor: NVIDIA Corporation
            physical id: 0.1
            bus info: pci@0000:01:00.1
            version: a1
            width: 32 bits
            clock: 33MHz
            capabilities: pm msi pciexpress bus_master cap_list
            configuration: driver=snd_hda_intel latency=0
            resources: irq:19 memory:fe080000-fe083fff
    *-usb:0
         description: USB controller
         product: FCH USB XHCI Controller
         vendor: Advanced Micro Devices, Inc. [AMD]
         physical id: 10
         bus info: pci@0000:00:10.0
         version: 03
         width: 64 bits
         clock: 33MHz
         capabilities: pm msi msix pciexpress xhci bus_master cap_list
         configuration: driver=xhci_hcd latency=0
         resources: irq:18 memory:fe106000-fe107fff
    *-usb:1
         description: USB controller
         product: FCH USB XHCI Controller
         vendor: Advanced Micro Devices, Inc. [AMD]
         physical id: 10.1
         bus info: pci@0000:00:10.1
         version: 03
         width: 64 bits
         clock: 33MHz
         capabilities: pm msi msix pciexpress xhci bus_master cap_list
         configuration: driver=xhci_hcd latency=0
         resources: irq:17 memory:fe104000-fe105fff
    *-storage
         description: SATA controller
         product: FCH SATA Controller [AHCI mode]
         vendor: Advanced Micro Devices, Inc. [AMD]
         physical id: 11
         bus info: pci@0000:00:11.0
         version: 40
         width: 32 bits
         clock: 66MHz
         capabilities: storage msi ahci_1.0 bus_master cap_list
         configuration: driver=ahci latency=32
         resources: irq:47 ioport:f090(size=8) ioport:f080(size=4) ioport:f070(size=8) ioport:f060(size=4) ioport:f050(size=16) memory:fe10d000-fe10d7ff
    *-usb:2
         description: USB controller
         product: FCH USB OHCI Controller
         vendor: Advanced Micro Devices, Inc. [AMD]
         physical id: 12
         bus info: pci@0000:00:12.0
         version: 11
         width: 32 bits
         clock: 66MHz
         capabilities: ohci bus_master
         configuration: driver=ohci-pci latency=32
         resources: irq:18 memory:fe10c000-fe10cfff
    *-usb:3
         description: USB controller
         product: FCH USB EHCI Controller
         vendor: Advanced Micro Devices, Inc. [AMD]
         physical id: 12.2
         bus info: pci@0000:00:12.2
         version: 11
         width: 32 bits
         clock: 66MHz
         capabilities: pm debug ehci bus_master cap_list
         configuration: driver=ehci-pci latency=32
         resources: irq:17 memory:fe10b000-fe10b0ff
    *-usb:4
         description: USB controller
         product: FCH USB OHCI Controller
         vendor: Advanced Micro Devices, Inc. [AMD]
         physical id: 13
         bus info: pci@0000:00:13.0
         version: 11
         width: 32 bits
         clock: 66MHz
         capabilities: ohci bus_master
         configuration: driver=ohci-pci latency=32
         resources: irq:18 memory:fe10a000-fe10afff
    *-usb:5
         description: USB controller
         product: FCH USB EHCI Controller
         vendor: Advanced Micro Devices, Inc. [AMD]
         physical id: 13.2
         bus info: pci@0000:00:13.2
         version: 11
         width: 32 bits
         clock: 66MHz
         capabilities: pm debug ehci bus_master cap_list
         configuration: driver=ehci-pci latency=32
         resources: irq:17 memory:fe109000-fe1090ff
    *-serial
         description: SMBus
         product: FCH SMBus Controller
         vendor: Advanced Micro Devices, Inc. [AMD]
         physical id: 14
         bus info: pci@0000:00:14.0
         version: 14
         width: 32 bits
         clock: 66MHz
         configuration: driver=piix4_smbus latency=0
         resources: irq:0
    *-ide
         description: IDE interface
         product: FCH IDE Controller
         vendor: Advanced Micro Devices, Inc. [AMD]
         physical id: 14.1
         bus info: pci@0000:00:14.1
         version: 00
         width: 32 bits
         clock: 66MHz
         capabilities: ide bus_master
         configuration: driver=pata_atiixp latency=32
         resources: irq:17 ioport:1f0(size=8) ioport:3f6 ioport:170(size=8) ioport:376 ioport:f000(size=16)
    *-multimedia
         description: Audio device
         product: FCH Azalia Controller
         vendor: Advanced Micro Devices, Inc. [AMD]
         physical id: 14.2
         bus info: pci@0000:00:14.2
         version: 01
         width: 64 bits
         clock: 33MHz
         capabilities: pm bus_master cap_list
         configuration: driver=snd_hda_intel latency=32
         resources: irq:16 memory:fe100000-fe103fff
    *-isa
         description: ISA bridge
         product: FCH LPC Bridge
         vendor: Advanced Micro Devices, Inc. [AMD]
         physical id: 14.3
         bus info: pci@0000:00:14.3
         version: 11
         width: 32 bits
         clock: 66MHz
         capabilities: isa bus_master
         configuration: latency=0
    *-pci:1
         description: PCI bridge
         product: FCH PCI Bridge
         vendor: Advanced Micro Devices, Inc. [AMD]
         physical id: 14.4
         bus info: pci@0000:00:14.4
         version: 40
         width: 32 bits
         clock: 66MHz
         capabilities: pci subtractive_decode bus_master vga_palette
    *-usb:6
         description: USB controller
         product: FCH USB OHCI Controller
         vendor: Advanced Micro Devices, Inc. [AMD]
         physical id: 14.5
         bus info: pci@0000:00:14.5
         version: 11
         width: 32 bits
         clock: 66MHz
         capabilities: ohci bus_master
         configuration: driver=ohci-pci latency=32
         resources: irq:18 memory:fe108000-fe108fff
    *-pci:2
         description: PCI bridge
         product: Hudson PCI to PCI bridge (PCIE port 0)
         vendor: Advanced Micro Devices, Inc. [AMD]
         physical id: 15
         bus info: pci@0000:00:15.0
         version: 00
         width: 32 bits
         clock: 33MHz
         capabilities: pci pm pciexpress msi ht normal_decode bus_master cap_list
         configuration: driver=pcieport
         resources: irq:16
    *-pci:3
         description: PCI bridge
         product: Hudson PCI to PCI bridge (PCIE port 3)
         vendor: Advanced Micro Devices, Inc. [AMD]
         physical id: 15.3
         bus info: pci@0000:00:15.3
         version: 00
         width: 32 bits
         clock: 33MHz
         capabilities: pci pm pciexpress msi ht normal_decode bus_master cap_list
         configuration: driver=pcieport
         resources: irq:16 ioport:d000(size=4096) ioport:d2100000(size=1048576)
       *-network
            description: Ethernet interface
            product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
            vendor: Realtek Semiconductor Co., Ltd.
            physical id: 0
            bus info: pci@0000:04:00.0
            logical name: eth0
            version: 06
            serial: bc:5f:f4:84:c3:5c
            size: 100Mbit/s
            capacity: 1Gbit/s
            width: 64 bits
            clock: 33MHz
            capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
            configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168e-3_0.0.4 03/27/12 ip=192.168.1.7 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
            resources: irq:46 ioport:d000(size=256) memory:d2104000-d2104fff memory:d2100000-d2103fff
 *-pci:1
      description: Host bridge
      product: Family 15h (Models 10h-1fh) Processor Function 0
      vendor: Advanced Micro Devices, Inc. [AMD]
      physical id: 101
      bus info: pci@0000:00:18.0
      version: 00
      width: 32 bits
      clock: 33MHz
 *-pci:2
      description: Host bridge
      product: Family 15h (Models 10h-1fh) Processor Function 1
      vendor: Advanced Micro Devices, Inc. [AMD]
      physical id: 102
      bus info: pci@0000:00:18.1
      version: 00
      width: 32 bits
      clock: 33MHz
 *-pci:3
      description: Host bridge
      product: Family 15h (Models 10h-1fh) Processor Function 2
      vendor: Advanced Micro Devices, Inc. [AMD]
      physical id: 103
      bus info: pci@0000:00:18.2
      version: 00
      width: 32 bits
      clock: 33MHz
 *-pci:4
      description: Host bridge
      product: Family 15h (Models 10h-1fh) Processor Function 3
      vendor: Advanced Micro Devices, Inc. [AMD]
      physical id: 104
      bus info: pci@0000:00:18.3
      version: 00
      width: 32 bits
      clock: 33MHz
      configuration: driver=k10temp
      resources: irq:0
 *-pci:5
      description: Host bridge
      product: Family 15h (Models 10h-1fh) Processor Function 4
      vendor: Advanced Micro Devices, Inc. [AMD]
      physical id: 105
      bus info: pci@0000:00:18.4
      version: 00
      width: 32 bits
      clock: 33MHz
 *-pci:6
      description: Host bridge
      product: Family 15h (Models 10h-1fh) Processor Function 5
      vendor: Advanced Micro Devices, Inc. [AMD]
      physical id: 106
      bus info: pci@0000:00:18.5
      version: 00
      width: 32 bits
      clock: 33MHz
 *-scsi:0
      physical id: 1
      logical name: scsi0
      capabilities: emulated
    *-disk
         description: ATA Disk
         product: WDC WD3200BEVT-2
         vendor: Western Digital
         physical id: 0.0.0
         bus info: scsi@0:0.0.0
         logical name: /dev/sda
         version: 11.0
         serial: WD-WXL1A80M8420
         size: 298GiB (320GB)
         capabilities: partitioned partitioned:dos
         configuration: ansiversion=5 sectorsize=512 signature=000f3392
       *-volume:0
            description: EXT4 volume
            vendor: Linux
            physical id: 1
            bus info: scsi@0:0.0.0,1
            logical name: /dev/sda1
            logical name: /boot
            version: 1.0
            serial: 6810c833-a160-44eb-9b2e-9fe6735bcc2e
            size: 237MiB
            capacity: 237MiB
            capabilities: primary bootable journaled extended_attributes huge_files dir_nlink recover extents ext4 ext2 initialized
            configuration: created=2013-11-24 20:00:12 filesystem=ext4 label=/boot lastmountpoint=/boot modified=2013-12-05 21:43:56 mount.fstype=ext4 mount.options=rw,relatime,data=ordered mounted=2013-12-05 21:43:56 state=mounted
       *-volume:1
            description: Linux swap volume
            physical id: 2
            bus info: scsi@0:0.0.0,2
            logical name: /dev/sda2
            version: 1
            serial: be0a87db-5f98-4eac-8a2e-d2fb8679b636
            size: 3906MiB
            capacity: 3906MiB
            capabilities: primary nofs swap initialized
            configuration: filesystem=swap pagesize=4096
       *-volume:2
            description: EXT4 volume
            vendor: Linux
            physical id: 3
            bus info: scsi@0:0.0.0,3
            logical name: /dev/sda3
            logical name: /
            version: 1.0
            serial: de911bc3-4054-4d43-80c3-8fabf377ace0
            size: 14GiB
            capacity: 14GiB
            capabilities: primary journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized
            configuration: created=2013-11-24 20:00:13 filesystem=ext4 lastmountpoint=/ modified=2013-12-05 21:43:56 mount.fstype=ext4 mount.options=rw,relatime,errors=remount-ro,data=ordered mounted=2013-12-05 21:43:56 state=mounted
       *-volume:3
            description: EXT4 volume
            vendor: Linux
            physical id: 4
            bus info: scsi@0:0.0.0,4
            logical name: /dev/sda4
            logical name: /home
            version: 1.0
            serial: cb51e781-5273-4e49-ab44-ce75c7a90754
            size: 279GiB
            capacity: 279GiB
            capabilities: primary journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized
            configuration: created=2013-11-24 20:00:15 filesystem=ext4 lastmountpoint=/home modified=2013-12-05 21:44:02 mount.fstype=ext4 mount.options=rw,relatime,data=ordered mounted=2013-12-05 21:44:02 state=mounted
 *-scsi:1
      physical id: 2
      bus info: usb@2:1
      logical name: scsi3
      capabilities: emulated scsi-host
      configuration: driver=usb-storage
    *-disk
         description: SCSI Disk
         physical id: 0.0.0
         bus info: scsi@3:0.0.0
         logical name: /dev/sdb
         size: 3824MiB (4009MB)
         capabilities: partitioned partitioned:dos
         configuration: sectorsize=512 signature=0305a604
       *-volume
            description: Windows FAT volume
            vendor: mkdosfs
            physical id: 1
            bus info: scsi@3:0.0.0,1
            logical name: /dev/sdb1
            version: FAT32
            serial: 69b5-7571
            size: 3822MiB
            capacity: 3823MiB
            capabilities: primary bootable fat initialized
            configuration: FATs=2 filesystem=fat label=HERPADERPAD
1
задан 13.05.2020, 11:01

2 ответа

Ваше ядро ​​все еще показывает 4 гигабайта оперативной памяти. free возвращает только ОЗУ с возможностью отображения. У вас есть 1 Гб оперативной памяти, к которой нет доступа. Это может произойти по нескольким причинам, но я предполагаю, что обновление обновило драйверы видео и ваша карта «использует» часть этой оперативной памяти.

Вы можете проверить, что ваша RAM не «помечена как плохая», например, Bad RAM.

В основном вам нужно выяснить, где находится недостающая память. Она там, ваша система видит это, она просто сопоставлена ​​с чем-то другим, чем вы привыкли.

ответ взят из здесь.

1
ответ дан 13.05.2020, 11:01
  • 1
    у меня есть опция теста памяти, могли бы быть Вы, должен рассмотреть восстановление начальной загрузки для этого, потому что несколько раз/boot/default/configuration комментирует его.. – guirgis 13.05.2020, 11:02
  • 2
    До обновления ядра, работая lshw показал, что у меня было 4 ГБ поршня также. Я выполнил Ваш выше кода, но ничего не произошло. Если я отбрасываю последнюю часть " BIOS..." материал, тогда я получаю вывод, но it' s закон – guirgis 13.05.2020, 11:02
  • 3
    Интересный.. никакая memtest опция в GRUB. – saket 13.05.2020, 11:02
  • 4
    Устраненный memtest проблема. I' ll выполненный memtest в течение ночи для проверки на плохую RAM. Если это верно, i' m собирающийся возвращать это и становиться новым. Рассмотрение у меня есть 30-дневная гарантия и it' s неделя. – Anax 13.05.2020, 11:02
  • 5
    проверка Плохой Поршень.. – qwerty_so 13.05.2020, 11:03

Оказывается, после прошивки BIOS одна из моих флешек RAM была мертва. Не уверен, почему, но нет, я даже не смогу добраться до POST, если оставлю одну из моих флешек.

0
ответ дан 13.05.2020, 11:02

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