This bug was fixed in the package unity-system-compositor -
0.4.2+16.04.20160211.2-0ubuntu1
---------------
unity-system-compositor (0.4.2+16.04.20160211.2-0ubuntu1) xenial; urgency=medium
[ CI Train Bot ]
* No-change rebuild.
unity-system-compositor (0.4.2+16.04.20160211-0ubuntu1) xenial;
urgency=medium
* Orient the spinner according to the native orientation of the device.
(LP: #1543495)
* Implement a stub cookie authority (LP: #1536662)
-- Alexandros Frantzis <[email protected]> Thu, 11 Feb
2016 12:22:48 +0000
** Changed in: unity-system-compositor (Ubuntu)
Status: New => Fix Released
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Touch seeded packages, which is subscribed to mir in Ubuntu.
https://bugs.launchpad.net/bugs/1536662
Title:
[regression] Black screen: Mir hangs and then crashes on login due to
reading from /dev/random
Status in Mir:
Triaged
Status in Mir 0.19 series:
Triaged
Status in Mir 0.20 series:
Triaged
Status in Unity System Compositor:
Fix Committed
Status in mir package in Ubuntu:
Confirmed
Status in unity-system-compositor package in Ubuntu:
Fix Released
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.
To manage notifications about this bug go to:
https://bugs.launchpad.net/mir/+bug/1536662/+subscriptions
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