前言
在Android 9系统运行一段时间之后， 屏幕卡死主动， 查看system_server_crash
一， 现象
在使用系统一段时间之后， 突然屏幕卡死， 触控无效。
二， 日志
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: java.io.IOException: write failed: ENOSPC (No space left on device)
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: at libcore.io.IoBridge.write(IoBridge.java:531)
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: at java.io.FileOutputStream.write(FileOutputStream.java:381)
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: at java.io.FilterOutputStream.close(FilterOutputStream.java:158)
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: at com.android.server.DropBoxManagerService.add(DropBoxManagerService.java:281)
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: at com.android.server.DropBoxManagerService$2.add(DropBoxManagerService.java:139)
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: at android.os.DropBoxManager.addText(DropBoxManager.java:283)
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: at com.android.server.am.ActivityManagerService$22.run(ActivityManagerService.java:15816)
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: at com.android.server.am.ActivityManagerService.addErrorToDropBox(ActivityManagerService.java:15825)
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: at com.android.server.am.ActivityManagerService.handleApplicationCrashInner(ActivityManagerService.java:15435)
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: at com.android.server.am.ActivityManagerService.handleApplicationCrash(ActivityManagerService.java:15403)
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: at com.android.internal.os.RuntimeInit$KillApplicationHandler.uncaughtException(RuntimeInit.java:143)
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:1068)
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:1063)
11-23 11:23:35.792 20201 20279 E DropBoxManagerService: at java.lang.Thread.dispatchUncaughtException(Thread.java:1955)/ $ df -h 查看存储，发现空间使用完毕
Filesystem Size Used Avail Use% Mounted on
/dev/root 2.9G 2.7G 142M 96% /
tmpfs 3.8G 456K 3.8G 1% /dev
tmpfs 3.8G 0 3.8G 0% /mnt
/dev/block/vde1 0.9G 64M 928M 7% /vendor
/dev/block/vda1 525M 487M 0 100% /data
/data/media 525M 487M 0 100% /storage/emulated
