drm:没有驱动程序支持 vblank 时间戳查询

drm:没有驱动程序支持 vblank 时间戳查询

我的图形似乎有点滞后。我输入了命令:

dmesg | egrep 'drm|radeon'

我收到了这条消息

  [2.205753] [drm] Initialized drm 1.1.0 20060810
  [2.246056] [drm] VGACON disable radeon kernel modesetting.
  [2.246062] [drm] radeon userspace modesetting enabled.
  [2.246861] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
  [2.246866] [drm] No driver support for vblank timestamp query.
  [2.246871] [drm] Initialized radeon 1.34.0 20080528 for 0000:02:00.0 on minor 0
  [2.247838] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
  [2.247840] [drm] No driver support for vblank timestamp query.
  [2.247842] [drm] Initialized radeon 1.34.0 20080528 for 0000:01:05.0 on mino

我的问题是,这些行是什么意思:

  [2.246866] [drm] No driver support for vblank timestamp query.
  [2.247840] [drm] No driver support for vblank timestamp query.

是什么意思?我是新手,只是想知道这是否值得担心,我在 Google 上找不到任何东西。

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