系统信息：
$ lspci
01:00.0 VGA compatible controller: NVIDIA Corporation NV44 [GeForce 6500] (rev a1)
$ 免费-m
total used free shared buffers cached
Mem: 7940 7646 294 49 168 3908
-/+ buffers/cache: 3568 4372
Swap: 8143 0 8143
中央处理器：
vendor_id : GenuineIntel
cpu family : 6
model : 42
model name : Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz
stepping : 7
microcode : 0x25
cpu MHz : 1600.000
cache size : 8192 KB
$ sudo lshw -short
H/W path Device Class Description
======================================================
system System Product Name (SKU)
/0 bus P8H77-M LE
/0/0 memory 64KiB BIOS
/0/4 processor Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz
/0/4/5 memory 32KiB L1 cache
/0/4/6 memory 256KiB L2 cache
/0/4/7 memory 8MiB L3 cache
/0/1 memory
/0/1/0 memory 4GiB DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
/0/58 memory System Memory
/0/58/0 memory 4GiB DIMM DDR3 Synchronous 1333 MHz (0,8 ns)
/0/2 memory
/0/3 memory
/0/100 bridge 2nd Generation Core Processor Family DRAM Controller
/0/100/1 bridge Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port
/0/100/1/0 display NV44 [GeForce 6500]
/0/100/14 bus 7 Series/C210 Series Chipset Family USB xHCI Host Controller
/0/100/16 communication 7 Series/C210 Series Chipset Family MEI Controller #1
/0/100/1a bus 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2
/0/100/1b multimedia 7 Series/C210 Series Chipset Family High Definition Audio Controller
/0/100/1c bridge 7 Series/C210 Series Chipset Family PCI Express Root Port 1
/0/100/1c.5 bridge 7 Series/C210 Series Chipset Family PCI Express Root Port 6
/0/100/1c.5/0 eth0 network RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
/0/100/1c.6 bridge 82801 PCI Bridge
/0/100/1c.6/0 bridge ASM1083/1085 PCIe to PCI Bridge
/0/100/1d bus 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1
/0/100/1f bridge H77 Express Chipset LPC Controller
/0/100/1f.2 storage 7 Series/C210 Series Chipset Family 6-port SATA Controller [AHCI mode]
/0/100/1f.3 bus 7 Series/C210 Series Chipset Family SMBus Controller
/0/5 scsi0 storage
/0/5/0.0.0 /dev/sda disk 500GB WDC WD5000AAKX-0
/0/5/0.0.0/1 /dev/sda1 volume 243MiB Linux filesystem partition
/0/5/0.0.0/2 /dev/sda2 volume 465GiB Extended partition
/0/5/0.0.0/2/5 /dev/sda5 volume 465GiB Linux LVM Physical Volume partition
/0/6 scsi4 storage
/0/6/0.0.0 /dev/cdrom disk CDDVDW SH-222BB
/1 power To Be Filled By O.E.M.
安装了 nvidia-304 专有驱动程序。
系统有时会变得非常慢，尤其是在执行桌面视频效果（所有淡入淡出、模糊等）时。
之前我使用过 Ubuntu 10.04，没有遇到任何性能问题。
这是因为显卡太差，glmark2测试得分只有 68 分吗？我该怎么做才能提高整体性能？
答案1
对于 NVIDIA，您唯一的选择是使用专有驱动程序，否则只能忍受糟糕的性能。尝试安装 nvidia-current。
答案2
显然 nvidia 驱动程序写得比较笨拙，在移除 nvidia 显卡并保留内置显卡后，性能得到了大幅提升。
可能会帮助遇到同样问题的人。