USB_Confusion

  • Thread starter Thread starter Guest
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Guest

Both my printer and scanner are attached- now by usb to my pc. This has caused my printer to fail and my scanner to balk
I have found that once I scan an item into the system, process and prepare to print xp or the hp printer drivers are redlighted by some usb protocol. Current work around is to unplug the scanner- physically. This I beieve relieves the red light and then permits the data "trian" to pass the usb switchyard. MY printer works and so do I. The USb switchyard evidentally needs some additional attention in the form of hardware and perhaps a scsi type interface with its own memory. Since image files can be up to 30- 60 megs it would not supprise me to see this amount as a benchmark
Good luck.
 
Usually this is a power issue... caused by an insufficient PSU (power supply
unit) in the PC.

Each USB port draws power... as does the scanner... draw too much in one go
and something's got to go. I personally wouldn't run a PC these days
without at least a 400watt... and preferably more.... my Server has only a
350watt, but it has bare minimim... cheap graphics card, one CD drive (non
burner) one floppy, two hard drives, printer, keyboard and mouse.

My desktop has a 450watt... and runs 3 hard drives, DVD burner, printer,
scanner, USB 2.0 card, Firewire card, etc etc - you name it, it probably
runs it at some point or other!

Cari
www.coribright.com
 
So most pcs are going to be under powered. This means one device is pulling and the other is pushing the circuits into an imbalanced state. Is it impossible for the software daemons to measure the voltage and retask the flow of electrons on the motherboard based upon "demand of current" application command input?

Both the printer and the scanner I use are self powered. The USB has been a HAL security issue. The MS HAL doesn't like USB devices hooking up and rearranging the china in its cabinet, scanning and ordering print jobs. This activity shoves plates of bytes and bits into its paging file and ram. It juggles its VM like a drunken circus clown.

It is probably because plug and play usb device drivers for printers and scanners also lack "coded" identifiers that would encapsulate and greenlight "working data." As opposed to usb storage devices. Something a disgruntled employee would use to dump the latest version of media player to kaza or the CFO's gambling habits to shareholders. I suppose truly imaginative coder could also write his own driver that would mask a usb storage device to appear as a printer.It would use the Spooler function to grab docs. pdfs. print screens. emails etc.using several batch formats
Oh I don't code by the way. Load up the spyware and ride. Hi HO silver. Merry xmas.
 
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