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Message #134872
[Bug 1536662] Re: [regression] Mir hangs and then crashes due to reading from /dev/random
** Changed in: unity-system-compositor
Milestone: 0.4.1 => 0.4.2
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https://bugs.launchpad.net/bugs/1536662
Title:
[regression] Mir hangs and then crashes due to reading from
/dev/random
Status in Mir:
In Progress
Status in Unity System Compositor:
In Progress
Status in mir package in Ubuntu:
Confirmed
Status in unity-system-compositor package in Ubuntu:
New
Bug description:
cookie_factory attempts to read data from /dev/random at boot, and
blocks until it has enough random data or timesout after 30 seconds.
How I can reproduce
1. Run the Unity8 greeter as a mir server
2. Reboot
Expected behavior: Greeter is displayed as mir && USC run happily
Actual behavior: Mir throws an exception after 30 seconds
Work-around:
Before logging in, move the mouse around lots, for at least 20 seconds. And after logging in, while you're looking at a black screen, move the mouse around furiously. This will populate the kernel entropy pool sufficiently to avoid the hang and crash.
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