由于ubuntu的电源管理有问题，导致笔记本风扇老转，又吵又耗电。搜了一通，发现可以解决。
我的系统是12.04，jupiter是0.1.9，不过有点小小的问题：
~$ jupiterException in thread Thread-4:Traceback (most recent call last): File "/usr/lib/python2.7/threading.py", line 551, in __bootstrap_inner self.run() File "/usr/lib/python2.7/threading.py", line 504, in run self.__target(*self.__args, **self.__kwargs) File "/usr/bin/jupiter", line 414, in update_screen_resolutions res = self.jupiter.get_available_resolutions(display) File "/usr/bin/jupiter", line 181, in get_available_resolutions return self.get_device('/available_resolutions_' + args,'resolutions','modes ' + args).split(' ')AttributeError: 'bool' object has no attribute 'split'Exception in thread Thread-5:Traceback (most recent call last): File "/usr/lib/python2.7/threading.py", line 551, in __bootstrap_inner self.run() File "/usr/lib/python2.7/threading.py", line 504, in run self.__target(*self.__args, **self.__kwargs) File "/usr/bin/jupiter", line 380, in update_screen_orientations rotation = self.jupiter.current_rotation(display) File "/usr/bin/jupiter", line 166, in current_rotation return self.get_device('/rotation_saved_'+args, 'rotate', ['normal',args]).split(' ')[0]AttributeError: 'bool' object has no attribute 'split' 再搜了一通误解过，只好调试了一通，发现176行的函数def get_displays(self)返回的值有问题，包含空的元素，然后 update_screen_resolutions、get_available_resolutions、current_rotation等函数就会出错
就把错误的函数：
def get_displays(self): return self.get_device('/displays','vga-out','mon').split(' ') 改成了：
def get_displays(self): return filter(None, self.get_device('/displays','vga-out','mon').split(' ')) 至于那个filter为什么可以去空元素，别问！还是搜索来的，其实我只是半个伸手党。具体自己看python文档，build-in函数里。