ACPI disables network (why?)

Donald J. O'Neill duncan.fbsd at
Sat Apr 1 03:44:26 UTC 2006

On Friday 31 March 2006 19:16, Peter wrote:
> I've been meaning to ask this one for awhile.
> I'm running 5.4-STABLE and I cannot use my network card *without*
> booting with ACPI enabled.  The net contains trouble with people
> having this type of issue with Realtek cards and ACPI *enabled*.  I
> have a Gigabyte m/b with an onbard adapter that is assigned the sk
> driver.
> So the symptom is "watchdog timeout" during DHCP discovery at the
> boot stage.  My networking is non-functional if I try to boot with
> dmesg says (during a successful boot):
> pcib2: <ACPI PCI-PCI bridge> at device 14.0 on pci0
> pci2: <ACPI PCI bus> on pcib2
> skc0: <Marvell Gigabit Ethernet> port 0xc000-0xc0ff mem
> 0xfb000000-0xfb003fff irq 19 at device 11.0 on pci2
> skc0: Marvell Yukon Lite Gigabit Ethernet rev. (0x9)
> sk0: <Marvell Semiconductor, Inc. Yukon> on skc0
> sk0: Ethernet address: 00:0f:ea:ec:f1:4e
> miibus0: <MII bus> on sk0
> e1000phy0: <Marvell 88E1000 Gigabit PHY> on miibus0
> e1000phy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX,
> 1000baseTX-FDX, auto
> Any ideas?
> __________________________________________________

One thing you can check for in DMESG is irq storms, throttling offending 
device. If you see that, it means you've got devices that don't want to 
share an irq, and you'll have to shuffle the cards on the pci bus until 
that clears up.


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