Comment 3 for bug 966782

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Tim Gardner (timg-tpi) wrote : Re: irqs disabled after kernel update

The only hardware change from Ubuntu-3.2.0-19.31 to Ubuntu-3.2.0-20.33 that might have an effect is '(pre-stable) ASPM: Fix pcie devices with non-pcie children'. Can you experiment by adding one of these to your grub boot command to see if it makes a difference ?

pcie_aspm=off
pcie_aspm=force