beryl昨日まで使えてたのに、急に下のようなメッセージが出て使えなくなりました。
どうすればよいのでしょうか？

> beryl-manager
> glxinfo: not found
ウィンドウ・マネージャの警告: last_user_time (7282) is greater than comparison timestamp (3415678011).  This most likely represents a buggy client sending inaccurate timestamps in messages such as _NET_ACTIVE_WINDOW.  Trying to work around...
ウィンドウ・マネージャの警告: 0x160000d (KDE Deskto) appears to be one of the offending windows with a timestamp of 4042322161.  Working around...
ウィンドウ・マネージャの警告: 0x2200009 (mnt - Konq) appears to be one of the offending windows with a timestamp of 7282.  Working around...
ウィンドウ・マネージャの警告: last_focus_time (7282) is greater than comparison timestamp (3415678107).  This most likely represents a buggy client sending inaccurate timestamps in messages such as _NET_ACTIVE_WINDOW.  Trying to work around...