Comment # 22 on bug 935086 from Uwe Geuder

Created attachment 639392 [details]
screen picture when resume hangs with additional debug output (pic1)

/usr/sbin/resume starts to execute correctly the progress counter shows how the
image is unpacked. Then the system hangs. Unfortunately I don't know what
/usr/sbin/resume looks like in a successful case, because in successful cases
the console contents swtiches very fast after the unpacking. So I am not sure,
whether the hang happens still before it switches to the restored kernel
structures or after the switch.

However, as shown in earlier screen dumps SysRq is in this semi-broken state
that it shows only headings but no contents. So I might guess that the switch
has happened but the restored kernel is in a semi-dead state.