[powerstation-owners] New experimental Firmware

[Adrian Reber]

On Thu, Nov 27, 2008 at 10:44:19AM +0100, Stefan Nürnberger wrote:
>> What happens if you boot to the firmware prompt and turn then the devices
>> on? Does it still crash in Linux? It could be that the firmware does not
>> correctly disable the controller before booting Linux and there is still
>> some DMA transaction active.
>
> I tried that. I booted to firmware prompt and switched the usb harddisk  
> on. The firmware did not detect it, since the "Scan USB" part was  
> already done. The effect in Linux is still the same:
>
> With kernel 2.6.27.x:
> - system will hang during boot when device is connected/switched on.
> - system will boot fine if device is switched off during boot.
> - system hangs as soon as the device is switched on.
> - no output in dmesg, not even "device detected"
>
> With kernel 2.6.24-gentoo-r3:
> - system will boot fine whether device is switched on or off
> - system hangs seconds after the first attempt to do something with the  
> device, e.g. trying to mount the device or even a simple 'lsusb'
> - normal "device detected" output in dmesg

If you get the error if the USB devices are not turned on during SLOF's USB
scan, then I would say it is a Linux bug.

		Adrian