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RTC没电,linux启动不起来



 

RTC靠纽扣电池供电, 当消耗完毕后,或直接断开供电线后,系统停在 booting the kernel.....

如果不用纽扣电池而是超级电容供电,当电容消耗完后, linux只是在启动时多了一行提示, rtc获取时间失败。

请问这个情况是从软件下手还是硬件下手解决呢?