lspci  | grep -i vga

这样就可以显示机器上的显卡信息，比如 

[root@localhost conf]# lspci | grep -i vga 01:00.0 VGA compatible controller: nVidia Corporation Device 1081 (rev a1) 02:00.0 VGA compatible controller: nVidia Corporation GT215 [GeForce GT 240] (rev a2) 08:05.0 VGA compatible controller: ASPEED Technology, Inc. ASPEED Graphics Family (rev 10)

如果想看详细的信息，比如 GeForce GT 240，即 02:00.0

[root@localhost conf]# lspci -v -s 02:00.0 02:00.0 VGA compatible controller: nVidia Corporation GT215 [GeForce GT 240] (rev a2) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device 8351 Flags: bus master, fast devsel, latency 0, IRQ 169 Memory at f9000000 (32-bit, non-prefetchable) [size=16M] Memory at d0000000 (64-bit, prefetchable) [size=256M] Memory at ce000000 (64-bit, prefetchable) [size=32M] I/O ports at bc00 [size=128] [virtual] Expansion ROM at f8f80000 [disabled] [size=512K] Capabilities: [60] Power Management version 3 Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [78] Express Endpoint, MSI 00 Capabilities: [b4] Vendor Specific Information: Len=14 Capabilities: [100] Virtual Channel Capabilities: [128] Power Budgeting Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 Kernel driver in use: nvidia Kernel modules: nvidiafb, nvidia

可以看到GT240的显存是 256M

但是我的系统上其实是装了两块显卡的，还有一块显示不出来，这个时候，对于nvidia显卡的话可以用nvidia-smi命令来查

[root@localhost conf]# nvidia-smi Tue Dec  3 14:46:02 2013        +------------------------------------------------------+                        | NVIDIA-SMI 4.304.54   Driver Version: 304.54         |                        |-------------------------------+----------------------+----------------------+ | GPU  Name                     | Bus-Id        Disp.  | Volatile Uncorr. ECC | | Fan  Temp  Perf  Pwr:Usage/Cap| Memory-Usage         | GPU-Util  Compute M. | |===============================+======================+======================| |   0  GeForce GTX 570          | 0000:01:00.0     N/A |                  N/A | | 50%   65C  N/A     N/A /  N/A |  49%  624MB / 1279MB |     N/A      Default | +-------------------------------+----------------------+----------------------+ |   1  GeForce GT 240           | 0000:02:00.0     N/A |                  N/A | | N/A   39C  N/A     N/A /  N/A |   1%    2MB /  255MB |     N/A      Default | +-------------------------------+----------------------+----------------------+                                                                                 +-----------------------------------------------------------------------------+ | Compute processes:                                               GPU Memory | |  GPU       PID  Process name                                     Usage      | |=============================================================================| |    0            Not Supported                                               | |    1            Not Supported                                               | +-----------------------------------------------------------------------------+

可以看到，还有一块显卡是 GTX 570， 显存是 1279M，也就是我们用lspci看到的 01:00.0

其他信息：http://wiki.ubuntu.org.cn/NVIDIA