Re: usb plugins cause reboots

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Jack Howarth wrote, On 08/28/2008 04:18 PM:
   Has anyone else seen this behavior under Fedora 9 i386?
I have Fedora 9 with the latest 2.6.25.14-108.fc9 kernel
installed on a Dell Lattitude D810 portable. The machine runs
fine with one exception. If I pull in either a usb mouse or
a usb memory stick into the upper USB port, the machine will
instantly reboot. The lower USB port doesn't seem to exhibit
this problem. Are there any known issues with usb causing
kernel reboots under Fedora 9?
                      Jack


Some how (history of working with strange equipment) I don't think this is Fedora 9's fault.

I have seen this happen on a compact-PCI unit that had insufficient current carrying capacity from the power supply to the backplane, and funny enough the upper port had the problem more than the lower. [Always fun when the ME has to show the EE what a couple of caps can temporarily resolve.]

suggestion:
 try booting to grub,
 then hit the up-down arrows to stop grub from booting anything
 then insert the usb memory stick into the upper USB port.

If the machine reboots, I think we both understand that, something is truly messed up in hardware. but even if it does not, it is probably a hardware problem but because you were not in Linux the CPU was not pulling its power, or grub did not activate the drive.


Still under warranty?

--
Todd Denniston
Crane Division, Naval Surface Warfare Center (NSWC Crane)
Harnessing the Power of Technology for the Warfighter

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