Thomas Renninger wrote:
On Thursday, April 19, 2012 03:55:57 PM Per Jessen
I'm having a few odd issues with
12.1+updates on an HP ML570G3 box.
I'm pretty certain it's irq related - in 12.1 (kernel 3.1.9-1.4) the
irqs for the two storage controllers and the two GigE NICs are
"rerouted to legacy IRQs". In 11.4 this does not happen - what does
this rerouting mean and is there a way of preventing it in 12.1?
You hit an IRQ quirk/workaround which seem to be necessary on specific
chipsets. It might not be on yours and if you see any negative impact
(no msi for this device?) you can revert the recent changes via boot
I saw a few weird things - both RAID controllers and both GigE
interfaces were affected. See bug#757778.
In fact there are 2 boot params:
- noioapicreroute # disables more or less only the quirk you mention
- noioapicquirk # disables the workaround you see, plus possible
# workarounds which may (or not) be needed for
# your platform
-> if all devices still work as expected you are fine, if not, try:
thanks for the advice, I used 'pci=noioapicquirk' which did the trick.
Per Jessen, Zürich (11.3°C)
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