** Changed in: linux (Ubuntu Trusty)
Assignee: dann frazier (dannf) => Craig Magina (craig.magina)
** Changed in: linux (Ubuntu Utopic)
Assignee: dann frazier (dannf) => Craig Magina (craig.magina)
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https://bugs.launchpad.net/bugs/1382244
Title:
HP ProLiant m400 nic fails to initialize when booted w/ debug
Status in “linux” package in Ubuntu:
Fix Committed
Status in “linux” source package in Trusty:
Fix Committed
Status in “linux” source package in Utopic:
Fix Committed
Bug description:
[Impact]
On the majority of boots, the mlx4 driver will fail to initialize, resulting
in no network connectivity. This only occurs if debug level
logging to the serial console is enabled - which is not the default in Ubuntu.
[Test Case]
Enable debug logging:
$ echo 'setenv bootargs "$bootargs debug"' >
/etc/flash-kernel/ubootenv.d/debug
$ sudo flash-kernel
And reboot.
[Regression Risk]
The MSI code being modified in question is only used on X-Gene systems, so
risk to other systems is insignificant. In addition, the code being removed are
just debug statements that aren't emitted by default today in Ubuntu, so even
for X-Gene systems it is a minimal risk.
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