This bug was nominated against a series that is no longer supported, ie
saucy. The bug task representing the saucy nomination is being closed
as Won't Fix.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu Saucy)
Status: In Progress => Won't Fix
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https://bugs.launchpad.net/bugs/1171582
Title:
[highbank] hvc0 getty causes random hangs
Status in “finish-install” package in Ubuntu:
Fix Released
Status in “linux” package in Ubuntu:
In Progress
Status in “finish-install” source package in Raring:
Fix Released
Status in “linux” source package in Raring:
In Progress
Status in “finish-install” source package in Saucy:
Fix Released
Status in “linux” source package in Saucy:
Won't Fix
Bug description:
After doing a fresh install of raring, I've observed several issues
across multiple systems, and they all seem to be correlated with the
hvc0 upstart job (hvc0 getty) running.
One symptom I've seen on both machines is that the network goes
unresponsive for several seconds before recovering. If I run a ping, I
see a pattern of 84-85s of responses, followed by about 41s of
failures.
The khvcd process consumes a lot of CPU - often 100% of a processor.
Processes seem to randomly hang and are seemingly unrecoverable. I ran
an apt-get install that never emitted any output, but remained hung
until I rebooted the system.
When I try to kill the hvc0 upstart job (sudo stop hvc0 - or a kill
-9), the process does not die.
One one of the two hosts, I observed the console getty (ttyAMA0)
successfully starting, but never providing a login prompt to the
console. Restarting this process didn't help solve the problem.
Disabling the hvc0 upstart job and rebooting reliably makes these
problems go away.
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