strace shows what happens:
14:04:49.135589 getrandom(0x7ffdc3857ecf, 1, GRND_NONBLOCK) = -1 EAGAIN
(Resource temporarily unavailable)
14:04:49.135620 getrusage(0x1 /* RUSAGE_??? */, {ru_utime={0, 0}, ru_stime={0,
8000}, ru_maxrss=8344, ru_ixrss=0, ru_idrss=0, ru_isrss=0, ru_minflt=509,
ru_majflt=17, ru_nswap=0, ru_inblock=4048, ru_oublock=0, ru_msgsnd=0,
ru_msgrcv=0, ru_nsignals=0, ru_nvcsw=969, ru_nivcsw=20}) = 0
14:04:49.135640
getrandom("\20@\251\341k\216T!\215\230\23\5\236\r\v~\253\360\321d\370_\263\227\364\376\20;}\314\271\217",
32, 0) = 32
14:05:16.540470
getrandom("FQ\212\356\17\17\17\323\316\230\7\275X1\3557\226\373U4F\\
sHOz\3\244$\226\270", 32, 0) = 32
14:05:16.540565 getrandom("+\262\232k\304\234\375R", 8, 0) = 8
So it's blocking on the getrandom() call. dmesg shows that the RNG pool
only gets initialized 30 seconds into the boot.
This happens even before NM gets to write its first "NetworkManager ..
is starting" log message.
** Summary changed:
- NetworkManager takes very log to start, or times out
+ NetworkManager takes very log to start, or times out, blocked on RNG
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https://bugs.launchpad.net/bugs/1622893
Title:
NetworkManager takes very log to start, or times out, blocked on RNG
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