how do you access a usb flash drive? ----- Original Message ----- From: "Joseph C. Lininger" <jbahm@xxxxxxxxxx> To: "Speakup is a screen review system for Linux." <speakup at braille.uwo.ca> Cc: "Speakup Distribution List" <speakup at speech.braille.uwo.ca> Sent: Wednesday, June 22, 2005 10:07 AM Subject: Re: Accessing a USB device > Chuck, > In order to help you out, I need to see the following information. You > can send it to me privately so as not to clutter the list. We can then > post a solution to the list if people are interested. For all these > tests, do them as root after the usb device is plugged in. > > 1. The output from the command "dmesg" > 2. The output of the command "lsusb -v" > 3. A complete listing of your /dev directory, including all > subdirectories. This command will give you what I want. "find /dev" > > Equal causes can produce very unequal effects. > Joseph C. Lininger > jbahm at pcdesk.net > Verification: 5eab38a77ac40416e075be8f50607ff7 > > And so it came to pass that on Wed, 22 Jun 2005, Charles Hallenbeck said > >> I am trying for the first time to access a USB device and having a > problem >> doing so. The device is my new UPS from American Power Conversion, > which I >> plan to monitor with a program called apcupsd. The manual describes > how to >> configure my system for USB and how to test the USB interface before > running >> the program, and that is where I am stuck. >> >> It appears to me to be an interrupt problem. Here is why I think so. > For the >> past month or two I have noticed a peculiarity that happens within > about a >> minute after booting up the computer. Normally I start logging in > various >> users on difference consoles, and while I am doing that, I get a > spontaneous >> message saying that IRQ 5 is being disabled. The message says > something cute >> like, "Nobody cares!" and then disables IRQ 5. Examining the IRQ > assignments, >> I see that the only device assigned to that IRQ shown in > /proc/interrupts is >> the uhci-hcd driver. That has not been a problem until now, since > until now I >> have not attempted to access a USB device, which requires the uhci-hcd >> driver. >> >> When I plug the cable from my UPS into a USB slot, the device is > correctly >> identified by manufacturer, serial number, etc., but then it says that > it >> fails to register with usbcore. And the test program confirms that the > device >> cannot be accessed. >> >> My kernel is 2.6.11.6, and all the relevant drivers are compiled into > the >> kernel. It looks to me like the uhci-hcd driver has been assigned to > IRQ 5 >> but is not responding to that interrupt when it occurs. If someone has > seen >> this kind of thing before, or has any suggestion how to proceed with >> troubleshooting this one, I would sure appreciate hearing about it. > The >> software I plan to run to monitor the UPS is not involved here as yet, > since >> I have to resolve the USB interface to the UPS before there is a hope > in hell >> of that software working. If it would be of value to share any of the > error >> messages or other data, I would be happy to do so. >> >> Any ideas? I have run out. >> >> Chuck >> >> >> -- >> The Moon is Full >> But you can still get downloads from http://www.mhcable.com/~chuckh >> >> _______________________________________________ >> Speakup mailing list >> Speakup at braille.uwo.ca >> http://speech.braille.uwo.ca/mailman/listinfo/speakup >> > > > _______________________________________________ > Speakup mailing list > Speakup at braille.uwo.ca > http://speech.braille.uwo.ca/mailman/listinfo/speakup > > > -- > No virus found in this incoming message. > Checked by AVG Anti-Virus. > Version: 7.0.323 / Virus Database: 267.7.11/26 - Release Date: 6/22/2005 > >
