Chris Clayton <chris2553@xxxxxxxxx> :
[...]
[ 0.207094] acpi PNP0A08:00: ACPI _OSC support notification failed, disabling PCIe ASPM[...]
[ 0.207155] acpi PNP0A08:00: Unable to request _OSC control (_OSC support mask: 0x08)
[ 5.311191] r8169 0000:07:00.0: can't disable ASPM; OS doesn't have ASPM control[...][ 65.181715] [<f8e38000>] rtl8169_interrupt [r8169]
[ 65.181717] Disabling IRQ #17
Let me know if I can provide any additional information, although to
be honest, the boot completed and the KDE desktop started up OK, so
there may not be much else I can provide unless I find that the
problem is repeatable.
Please don't hesitate if it happens again, even if it can't be reproduced
on demand.