我有一台 Thinkpad T42，配备 ATI Radeon Mobility 7500 显卡芯片（RV200 芯片组），由开放式 Radeon 驱动程序支持。
在 11.04 版本下，vlc 可以使用 xvideo 扩展（硬件加速覆盖）以出色的帧速率播放高清视频：
vlc --vout xvideo MYVIDEO.mp4
VLC media player 1.1.9 The Luggage (revision exported)
Blocked: call to unsetenv("DBUS_ACTIVATION_ADDRESS")
Blocked: call to unsetenv("DBUS_ACTIVATION_BUS_TYPE")
[0x903e914] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
Blocked: call to setlocale(6, "")
Warning: call to srand(1323805494)
Warning: call to rand()
Blocked: call to setlocale(6, "")
(process:4926): Gtk-WARNING **: Locale not supported by C library.
Using the fallback 'C' locale.
brainfart cropping not supported, this could look slightly wrong .
..
在 11.10 下，vlc 将不使用 xvideo 扩展。启用覆盖（硬件加速）时，视频会变得不连贯。禁用覆盖后，性能会更好，但不够流畅。
vlc --vout xvideo MYVIDEO.mp4
VLC media player 1.1.12 The Luggage (revision exported)
Blocked: call to unsetenv("DBUS_ACTIVATION_ADDRESS")
Blocked: call to unsetenv("DBUS_ACTIVATION_BUS_TYPE")
[0x8a4292c] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
Blocked: call to setlocale(6, "")
Blocked: call to setlocale(6, "")
(process:1817): Gtk-WARNING **: Locale not supported by C library.
Using the fallback 'C' locale.
(vlc:1817): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
libva: VA-API version 0.32.0
libva: va_getDriverName() returns 0
libva: Trying to open /usr/lib/dri/radeon_drv_video.so
libva: va_openDriver() returns -1
[0x9905e84] main video output error: video output creation failed
[0x8cb8a64] main decoder error: failed to create video output