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Bug#701620: linux-image-3.2.0-4-amd64: Unable to use PCI cards on Intel DZ77SL50K motherboard (likely any Z77 board)



Control: tag -1 moreinfo

On Mon, 2013-02-25 at 12:45 +0100, szabolcs wrote:
> Package: src:linux
> Version: 3.2.35-2
> Severity: important
> Tags: upstream
> 
> Dear Maintainer,
> 
> I am unable to use any of my PCI slots of my new motherboard (a recent HW
> upgrade). Tested with two PCI network cards (1. Atheros chip based WiFi card I
> used with my previous mobo for WiFi AP, and 2. a 3Com NIC) placed repeatedly in
> different PCI slots. The results were always the same:
> 
> 1. during boot the kernel loads the appropriate modules (e.g. 3c59x), all
> appears to look just fine in dmesg.
> 
> 2. unless I bring the interfaces associated with the network cards up,
> everything works as expected.
> 
> 3. the moment I issue the 'ifup ethX' command, the following is printed in
> /var/log/syslog:
[...]

Is the IOMMU (also known as VT-d) enabled in the BIOS settings?
What is the kernel command line (/proc/cmdline)?

Ben.

-- 
Ben Hutchings
Absolutum obsoletum. (If it works, it's out of date.) - Stafford Beer

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