On 16/05/12 14:53, Clemens Ladisch wrote:
Rob Allen wrote:
On 14/05/12 07:39, Yinghai Lu wrote:
can you post full log with pci debug enabled with lastest upsteam kernel?
I'm happy to do that, although I need with some guidance on what I need to
enable to get the required output.
For Ubuntu, see<https://wiki.ubuntu.com/KernelTeam/GitKernelBuild>.
To enable PCI debugging, enable the configuration options
CONFIG_DEBUG_KERNEL and CONFIG_PCI_DEBUG.
Thanks. I've built the kernel and I can replicate the failure.
However, I'm having trouble getting the log output. As soon as I see the
"firewire_ohci: Failed to set Link Power Status" message, the machine
locks up. After cycling the power, that log output isn't anywhere in
/var/log anywhere (even if I booted with 'rw').
After some searching, I guess a decent route is to output to a serial
console. The machine in question doesn't have a serial port, although I
have a PCI-e serial card somewhere. (Is that likely to work so early in
the boot process?)
Can you suggest the best way to get the log output?
Thanks,
Rob
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