我从 Win 8.1 64 位迁移到 Ubuntu 14.04 64 位，并使用 DVD 全新安装。性能方面一切都很慢。图形效果一般，但当我说性能时，我的意思是，打开任何应用程序的平均速度，我可以数到 10 个 Mississippi 才能加载，例如 Firefox、LibreOffice、Chrome 等。系统工具大约需要 5 秒钟。登录大约需要 25 秒。启动时间很棒，大约不到 20 秒。有什么想法吗？
这是我的配置：
description: Desktop Computer
product: MS-7253 ()
vendor: MICRO-STAR INTERNATIONAL CO., LTD
version: 1.0
width: 64 bits
capabilities: smbios-2.4 dmi-2.4 vsyscall32
configuration: boot=normal chassis=desktop
discrete graphics: NVIDIA GT218 [GeForce 210]
核心主板产品：MS-7253 供应商：MICRO-STAR INTERNATIONAL CO., LTD 物理 ID：0 版本：1.0
*-firmware
description: BIOS
vendor: Phoenix Technologies, LTD
physical id: 0
version: V1.8
date: 03/06/2008
size: 128KiB
capacity: 448KiB
capabilities: isa pci pnp apm upgrade shadowing cdboot bootselect socketedrom edd int13floppy360 int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb agp ls120boot zipboot biosbootspecification
*-cpu
description: CPU
product: AMD Athlon(tm) 64 X2 Dual Core Processor 4200+
vendor: Advanced Micro Devices [AMD]
physical id: 7
bus info: cpu@0
version: AMD Athlon(tm) 64 X2 Dual Core Processor 4200+
slot: Socket AM2
size: 2200MHz
capacity: 3GHz
width: 64 bits
clock: 200MHz
capabilities: 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 rdtscp x86-64 3dnowext 3dnow rep_good nopl extd_apicid pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy
*-cache:0
description: L1 cache
physical id: b
slot: Internal Cache
size: 128KiB
capacity: 128KiB
capabilities: synchronous internal write-back
*-cache:1
description: L2 cache
physical id: c
slot: External Cache
size: 512KiB
capacity: 512KiB
capabilities: synchronous internal write-back
*-memory
description: System Memory
physical id: 19
slot: System board or motherboard
size: 2GiB
*-bank:0
description: DIMM
product: None
vendor: None
physical id: 0
serial: None
slot: A0
size: 1GiB
width: 64 bits
*-bank:1
description: DIMM
product: None
vendor: None
physical id: 1
serial: None
slot: A1
size: 1GiB
width: 64 bits
*-pci:0
description: Host bridge
product: K8M890CE Host Bridge
vendor: VIA Technologies, Inc.
physical id: 100
bus info: pci@0000:00:00.0
version: 00
width: 32 bits
clock: 33MHz
configuration: driver=agpgart-amd64 latency=8
resources: irq:0 memory:0-7ffffff
*-generic UNCLAIMED
description: PIC
product: K8M890CE I/O APIC Interrupt Controller
vendor: VIA Technologies, Inc.
physical id: 0.5
bus info: pci@0000:00:00.5
version: 00
width: 32 bits
clock: 33MHz
capabilities: io_x_-apic bus_master
configuration: latency=0
*-pci:0
description: PCI bridge
product: VT8237/8251 PCI bridge [K8M890/K8T800/K8T890 South]
vendor: VIA Technologies, Inc.
physical id: 1
bus info: pci@0000:00:01.0
version: 00
width: 32 bits
clock: 66MHz
capabilities: pci pm normal_decode bus_master cap_list
resources: ioport:e000(size=4096) memory:dfc00000-dfcfffff memory:dfb00000-dfbfffff
*-pci:1
description: PCI bridge
product: K8T890 PCI to PCI Bridge Controller
vendor: VIA Technologies, Inc.
physical id: 2
bus info: pci@0000:00:02.0
version: 00
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress pm msi ht normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:27 ioport:d000(size=4096) memory:dd000000-deffffff ioport:b0000000(size=536870912)
*-display
description: VGA compatible controller
product: GT218 [GeForce 210]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:02:00.0
version: a2
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
configuration: driver=nvidia latency=0
resources: irq:24 memory:dd000000-ddffffff memory:b0000000-bfffffff memory:ce000000-cfffffff ioport:df00(size=128) memory:c0000000-c007ffff
*-multimedia
description: Audio device
product: High Definition Audio Controller
vendor: NVIDIA Corporation
physical id: 0.1
bus info: pci@0000:02:00.1
version: a1
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:25 memory:deffc000-deffffff
*-pci:2
description: PCI bridge
product: K8T890 PCI to PCI Bridge Controller
vendor: VIA Technologies, Inc.
physical id: 3
bus info: pci@0000:00:03.0
version: 00
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress pm msi ht normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:31 ioport:c000(size=4096) memory:dfe00000-dfefffff ioport:dfd00000(size=1048576)
*-ide:0
description: IDE interface
product: VT8237A SATA 2-Port Controller
vendor: VIA Technologies, Inc.
physical id: f
bus info: pci@0000:00:0f.0
version: 80
width: 32 bits
clock: 33MHz
capabilities: ide pm bus_master cap_list
configuration: driver=sata_via latency=64
resources: irq:21 ioport:ff00(size=8) ioport:fe00(size=4) ioport:fd00(size=8) ioport:fc00(size=4) ioport:fb00(size=16) ioport:f400(size=256)
*-ide:1
description: IDE interface
product: VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE
vendor: VIA Technologies, Inc.
physical id: f.1
bus info: pci@0000:00:0f.1
version: 07
width: 32 bits
clock: 33MHz
capabilities: ide pm bus_master cap_list
configuration: driver=pata_via latency=64
resources: irq:0 ioport:1f0(size=8) ioport:3f6 ioport:170(size=8) ioport:376 ioport:fa00(size=16)
*-usb:0
description: USB controller
product: VT82xxxxx UHCI USB 1.1 Controller
vendor: VIA Technologies, Inc.
physical id: 10
bus info: pci@0000:00:10.0
version: a0
width: 32 bits
clock: 33MHz
capabilities: pm uhci bus_master cap_list
configuration: driver=uhci_hcd latency=64
resources: irq:20 ioport:f900(size=32)
*-usb:1
description: USB controller
product: VT82xxxxx UHCI USB 1.1 Controller
vendor: VIA Technologies, Inc.
physical id: 10.1
bus info: pci@0000:00:10.1
version: a0
width: 32 bits
clock: 33MHz
capabilities: pm uhci bus_master cap_list
configuration: driver=uhci_hcd latency=64
resources: irq:22 ioport:f800(size=32)
*-usb:2
description: USB controller
product: VT82xxxxx UHCI USB 1.1 Controller
vendor: VIA Technologies, Inc.
physical id: 10.2
bus info: pci@0000:00:10.2
version: a0
width: 32 bits
clock: 33MHz
capabilities: pm uhci bus_master cap_list
configuration: driver=uhci_hcd latency=64
resources: irq:21 ioport:f700(size=32)
*-usb:3
description: USB controller
product: VT82xxxxx UHCI USB 1.1 Controller
vendor: VIA Technologies, Inc.
physical id: 10.3
bus info: pci@0000:00:10.3
version: a0
width: 32 bits
clock: 33MHz
capabilities: pm uhci bus_master cap_list
configuration: driver=uhci_hcd latency=64
resources: irq:23 ioport:f600(size=32)
*-usb:4
description: USB controller
product: USB 2.0
vendor: VIA Technologies, Inc.
physical id: 10.4
bus info: pci@0000:00:10.4
version: 86
width: 32 bits
clock: 33MHz
capabilities: pm ehci bus_master cap_list
configuration: driver=ehci-pci latency=64
resources: irq:21 memory:dffff000-dffff0ff
*-isa
description: ISA bridge
product: VT8237A PCI to ISA Bridge
vendor: VIA Technologies, Inc.
physical id: 11
bus info: pci@0000:00:11.0
version: 00
width: 32 bits
clock: 33MHz
capabilities: isa pm cap_list
configuration: latency=0
*-network
description: Ethernet interface
product: VT6102 [Rhine-II]
vendor: VIA Technologies, Inc.
physical id: 12
bus info: pci@0000:00:12.0
logical name: eth0
version: 7c
serial: ea:49:f3:0f:4c:e0
size: 10Mbit/s
capacity: 100Mbit/s
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=via-rhine driverversion=1.5.1 duplex=half latency=64 link=no maxlatency=8 mingnt=3 multicast=yes port=MII speed=10Mbit/s
resources: irq:23 ioport:f200(size=256) memory:dfffe000-dfffe0ff
*-pci:3
description: PCI bridge
product: VT8237A PCI to PCI Bridge
vendor: VIA Technologies, Inc.
physical id: 13.1
bus info: pci@0000:00:13.1
version: 00
width: 32 bits
clock: 33MHz
capabilities: pci ht subtractive_decode bus_master cap_list
resources: ioport:b000(size=4096) memory:dfa00000-dfafffff ioport:df900000(size=1048576)
*-network
description: Ethernet interface
product: IC Plus IP100A Integrated 10/100 Ethernet MAC + PHY
vendor: Sundance Technology Inc / IC Plus Corp
physical id: 4
bus info: pci@0000:04:04.0
logical name: eth1
version: 31
serial: 00:08:54:e0:9f:78
size: 100Mbit/s
capacity: 100Mbit/s
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=sundance driverversion=1.2 duplex=full ip=192.168.0.9 latency=64 link=yes maxlatency=10 mingnt=10 multicast=yes port=MII speed=100Mbit/s
resources: irq:17 ioport:bf00(size=128) memory:dfaff000-dfaff1ff memory:df900000-df90ffff
*-pci:1
description: Host bridge
product: K8M890CE Host Bridge
vendor: VIA Technologies, Inc.
physical id: 101
bus info: pci@0000:00:00.1
version: 00
width: 32 bits
clock: 33MHz
*-pci:2
description: Host bridge
product: K8M890CE Host Bridge
vendor: VIA Technologies, Inc.
physical id: 102
bus info: pci@0000:00:00.2
version: 00
width: 32 bits
clock: 33MHz
*-pci:3
description: Host bridge
product: K8M890CE Host Bridge
vendor: VIA Technologies, Inc.
physical id: 103
bus info: pci@0000:00:00.3
version: 00
width: 32 bits
clock: 33MHz
*-pci:4
description: Host bridge
product: K8M890CE Host Bridge
vendor: VIA Technologies, Inc.
physical id: 104
bus info: pci@0000:00:00.4
version: 00
width: 32 bits
clock: 33MHz
*-pci:5
description: Host bridge
product: K8M890CE Host Bridge
vendor: VIA Technologies, Inc.
physical id: 105
bus info: pci@0000:00:00.7
version: 00
width: 32 bits
clock: 33MHz
*-pci:6
description: Host bridge
product: VT8237/8251 Ultra VLINK Controller
vendor: VIA Technologies, Inc.
physical id: 106
bus info: pci@0000:00:11.7
version: 00
width: 32 bits
clock: 33MHz
configuration: latency=64
*-pci:7
description: Host bridge
product: VT8237A Host Bridge
vendor: VIA Technologies, Inc.
physical id: 107
bus info: pci@0000:00:13.0
version: 00
width: 32 bits
clock: 33MHz
*-pci:8
description: Host bridge
product: K8 [Athlon64/Opteron] HyperTransport Technology Configuration
vendor: Advanced Micro Devices, Inc. [AMD]
physical id: 108
bus info: pci@0000:00:18.0
version: 00
width: 32 bits
clock: 33MHz
*-pci:9
description: Host bridge
product: K8 [Athlon64/Opteron] Address Map
vendor: Advanced Micro Devices, Inc. [AMD]
physical id: 109
bus info: pci@0000:00:18.1
version: 00
width: 32 bits
clock: 33MHz
*-pci:10
description: Host bridge
product: K8 [Athlon64/Opteron] DRAM Controller
vendor: Advanced Micro Devices, Inc. [AMD]
physical id: 10a
bus info: pci@0000:00:18.2
version: 00
width: 32 bits
clock: 33MHz
*-pci:11
description: Host bridge
product: K8 [Athlon64/Opteron] Miscellaneous Control
vendor: Advanced Micro Devices, Inc. [AMD]
physical id: 10b
bus info: pci@0000:00:18.3
version: 00
width: 32 bits
clock: 33MHz
configuration: driver=k8temp
resources: irq:0
*-multimedia
description: Audio device
product: VT8237A/VT8251 HDA Controller
vendor: VIA Technologies, Inc.
physical id: 1
bus info: pci@0000:80:01.0
version: 10
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:17 memory:afffc000-afffffff
*-scsi:0
physical id: 2
logical name: scsi2
capabilities: emulated
*-disk:0
description: ATA Disk
product: WDC WD1600AB-22D
vendor: Western Digital
physical id: 0.0.0
bus info: scsi@2:0.0.0
logical name: /dev/sda
version: 15.0
serial: WD-WCAEK1160784
size: 149GiB (160GB)
capabilities: partitioned partitioned:dos
configuration: ansiversion=5 sectorsize=512 signature=0005cb4f
*-volume:0
description: EXT4 volume
vendor: Linux
physical id: 1
bus info: scsi@2:0.0.0,1
logical name: /dev/sda1
logical name: /
version: 1.0
serial: 3cec4927-961e-4dc9-be15-fac612a854b0
size: 147GiB
capacity: 147GiB
capabilities: primary bootable journaled extended_attributes large_files huge_files dir_nlink extents ext4 ext2 initialized
configuration: created=2014-05-19 20:40:13 filesystem=ext4 lastmountpoint=/ modified=2014-05-21 10:37:15 mount.fstype=ext4 mount.options=rw,relatime,errors=remount-ro,data=ordered mounted=2014-05-21 10:37:15 state=mounted
*-volume:1
description: Extended partition
physical id: 2
bus info: scsi@2:0.0.0,2
logical name: /dev/sda2
size: 2045MiB
capacity: 2045MiB
capabilities: primary extended partitioned partitioned:extended
*-logicalvolume
description: Linux swap / Solaris partition
physical id: 5
logical name: /dev/sda5
capacity: 2045MiB
capabilities: nofs
*-disk:1
description: ATA Disk
product: ST3120020A
vendor: Seagate
physical id: 0.1.0
bus info: scsi@2:0.1.0
logical name: /dev/sdb
version: 3.31
serial: 3KA1SJZX
size: 111GiB (120GB)
capabilities: partitioned partitioned:dos
configuration: ansiversion=5 sectorsize=512 signature=4b36adea
*-volume
description: Windows NTFS volume
physical id: 1
bus info: scsi@2:0.1.0,1
logical name: /dev/sdb1
version: 3.1
serial: 160bc649-fff3-a04c-ad93-8f7430e55541
size: 111GiB
capacity: 111GiB
capabilities: primary ntfs initialized
configuration: clustersize=4096 created=2013-02-26 17:14:57 filesystem=ntfs modified_by_chkdsk=true mounted_on_nt4=true resize_log_file=true state=dirty upgrade_on_mount=true
*-scsi:1
physical id: 3
logical name: scsi3
capabilities: emulated
*-cdrom:0
description: DVD-RAM writer
product: DVDRW SHM-165H6S
vendor: LITE-ON
physical id: 0.0.0
bus info: scsi@3:0.0.0
logical name: /dev/cdrom
logical name: /dev/sr0
logical name: /media/juan/NSA320
version: HS0D
capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
configuration: ansiversion=5 mount.fstype=iso9660 mount.options=ro,nosuid,nodev,relatime,uid=1000,gid=1000,iocharset=utf8,mode=0400,dmode=0500 state=mounted status=ready
*-medium
physical id: 0
logical name: /dev/cdrom
logical name: /media/juan/NSA320
configuration: mount.fstype=iso9660 mount.options=ro,nosuid,nodev,relatime,uid=1000,gid=1000,iocharset=utf8,mode=0400,dmode=0500 state=mounted
*-cdrom:1
description: DVD writer
product: DVD+-RW DVD8801
vendor: PHILIPS
physical id: 0.1.0
bus info: scsi@3:0.1.0
logical name: /dev/sr1
version: 2D06
capabilities: removable audio cd-r cd-rw dvd dvd-r
configuration: ansiversion=5 status=nodisc
*-scsi:2
physical id: 4
bus info: usb@1:4
logical name: scsi4
capabilities: emulated scsi-host
configuration: driver=usb-storage
*-disk
description: SCSI Disk
physical id: 0.0.0
bus info: scsi@4:0.0.0
logical name: /dev/sdc
size: 2007MiB (2104MB)
capabilities: partitioned partitioned:dos
configuration: sectorsize=512 signature=759f2192
*-volume
description: Windows FAT volume
vendor: MSDOS5.0
physical id: 1
bus info: scsi@4:0.0.0,1
logical name: /dev/sdc1
logical name: /media/juan/DO NOT USE
version: FAT16
serial: aa43-9db8
size: 1899MiB
capacity: 1900MiB
capabilities: primary fat initialized
configuration: FATs=2 filesystem=fat mount.fstype=vfat mount.options=rw,nosuid,nodev,relatime,uid=1000,gid=1000,fmask=0022,dmask=0077,codepage=437,iocharset=iso8859-1,shortname=mixed,showexec,utf8,flush,errors=remount-ro state=mounted
*-scsi:3
physical id: 5
bus info: usb@5:1
logical name: scsi5
capabilities: emulated scsi-host
configuration: driver=usb-storage
*-disk:0
description: SCSI Disk
physical id: 0.0.0
bus info: scsi@5:0.0.0
logical name: /dev/sdd
configuration: sectorsize=512
*-disk:1
description: SCSI Disk
physical id: 0.0.1
bus info: scsi@5:0.0.1
logical name: /dev/sde
configuration: sectorsize=512
*-disk:2
description: SCSI Disk
physical id: 0.0.2
bus info: scsi@5:0.0.2
logical name: /dev/sdf
configuration: sectorsize=512
*-disk:3
description: SCSI Disk
physical id: 0.0.3
bus info: scsi@5:0.0.3
logical name: /dev/sdg
configuration: sectorsize=512
答案1
我看到你只有 2GB 内存，好的，确认你安装的是 32 位而不是 64 位的 ubuntu
如果你这样做，那可能是你的显卡出了问题，比如它可能太旧了，无法运行在 unity 中发现的高图形，或者驱动程序有问题，比如你必须为你的 vga 使用专有驱动程序而不是开源驱动程序，或者相反
因此，请尝试从设备管理器设置中进行上述两个操作，如果仍然发现相同的问题，并且您尝试了上述所有解决方案，请尝试安装没有图形的轻量级桌面环境，例如 lxde 或更轻的桌面环境
sudo apt-get install lubuntu-desktop
登录到此 DE 看看你是否仍然感觉很慢
答案2
通过重新安装 32 位操作系统解决