Hotpluging usb thumb drive causes reboot

joel_k · n00b Joined: 20 Jan 2008 Posts: 3 Location: Seattle

I have been fighting with my usb thumb drive trying to get it to work reliably for me for a couple of weeks now. As things stand now when I plug the drive in, or even just brush the drive against the usb socket, the hard drive light comes on and stays on, and the machine reboots. I thought about this a bit and remembered that I had plugged the pins into the motherboard myself -- maybe I had gotten them wrong. Re-plugged them. Everything seemed correct. Read many posts and found that I was supposed to have hald running. rc-update showed it wasn't, so I added it to default. This solved the problem I thought, but now once again the thing has gone back to re-booting if I get the drive anywhere near it. If I plug the drive in before I boot gentoo, I can boot, mount it, copy files to and from, (I didn't risk uplugging it). I can plug and unplug an old webcam, (my only other usb device), without causing a reboot. Don't really know what I should try next to get it working the way it should. Here is the output of uname -a for kernel version, etc:

Linux veryfine 2.6.23-gentoo-r3 #2 SMP PREEMPT Sat Dec 22 23:36:46 PST 2007 x86_64 AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ AuthenticAMD GNU/Linux

I can provide the output of lsusb or lsmod if that will help. Don't have the drive in at the moment as I try to keep it well away from the machine as things stand.

Voltago

joel_k · n00b Joined: 20 Jan 2008 Posts: 3 Location: Seattle

joel_k · n00b Joined: 20 Jan 2008 Posts: 3 Location: Seattle

Well, sure enough the back panel usb worked fine. I had thought it sounded more like a short, hardware kind of thing. I am matching the pin-outs in the motherboard handbook exactly, but there were a couple of questionable points. They seem to show a wire called key on pin 9, but there are only 8 wires in the front panel ribbon, and pin 9 is shown as NC in their digram. And there are wires labeled data- (1) and data+ (1) data- (2) data+ (2). I assume these would match USB+ and USB- pins, but the 1 and 2 are not indicated in the digram. This obviously isn't a gentoo problem, however, so I would consider it solved. Thanks for your help.

Voltago · Posted: Sun Jan 20, 2008 7:27 pm Post subject:

Well, if you can actually use the usb drive quite normally if you plug it before booting, I suspect that you connected to the right mobo pins. Again, check if the front panel is earthed correctly. There should be some kind of wire screwed to the computer case (if it is a metal case) or to your machine's earth.