我在Ubuntu Xenial上使用Python 3.5.2，IPython 6.4.0和matplot 2.2.2。 当我尝试使用pylab运行简单的绘图时，桌面会挂起
$ uname -a
Linux voyager 4.4.0-127-generic #153-Ubuntu SMP Sat May 19 10:58:46 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
$ ipython
Python 3.5.2 (default, Nov 23 2017, 16:37:01)
Type 'copyright', 'credits' or 'license' for more information
IPython 6.4.0 -- An enhanced Interactive Python. Type '?' for help.
%autoindent is deprecated since IPython 5: you can now paste multiple lines without turning autoindentation off.
Automatic indentation is: OFF
In [1]: pylab
Using matplotlib backend: TkAgg
Populating the interactive namespace from numpy and matplotlib
In [2]: x = linspace(-10., 10., 1000)
In [3]: plot(x, sin(x))
ipython进程使用100％的cpu。没有情节出现。我必须杀死ipython进程。