-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim McQuillan Sent: Wednesday, June 20, 2007 9:58 AM To: [email protected] Subject: Re: [Ltsp-discuss] local usb card reader
Rob Owens wrote: > Hi, I'm new to the list. I've been on the K12LTSP list for a while, > and I posted a question there that was never answered fully so I > figured I'd see if you guys had any advice for me. > > I have a Sandisk card reader that I'm using successfully on my thin > clients. It only has one slot, for SD cards. Like this one: > http://www.amazon.com/Sandisk-ImageMate-Hi-speed-SDDR-89-A15-Package/d > p/ > B00064V6RG/ref=pd_bbs_sr_1/103-4682886-3202265?ie=UTF8&s=electronics&q > id > =1181768340&sr=8-1 > > I also have a Sandisk 12-in-1 usb card reader which requires some > trickery to use on a thin client, and I'm wondering why. It's like > this > one: > http://www.amazon.com/Sandisk-ImageMate-Hi-speed-SDDR-89-A15-Package/d > p/ > B00064V6RG/ref=pd_bbs_sr_1/103-4682886-3202265?ie=UTF8&s=electronics&q > id > =1181768340&sr=8-1 > > The 12-in-1 card reader works as a local storage device if I insert > the card, then plug the card reader into the usb port. If I do it the > other way around it does not work. ie, the normal way: Plug the card > reader into the usb port and leave it there, then insert the card. > The card does not get recognized -- no event is triggered (when I > monitor a shell on the thin client). > this is because inserting a USB device (such as your card reader) into a USB port generates a kernel event that we can detect. Inserting media into a card reader doesn't generate such an event. One way around this is to constantly poll the reader, to see if there was a media change. this is how we do CDRom detecting. We don't currently do this for usb card readers. There might be something in LTSP-5 for doing this, but you'd have to ask Scott Balneaves. Best place to talk about this is on the #ltsp IRC channel on irc.freenode.net. Jim McQuillan [EMAIL PROTECTED] Thanks Jim. I'm using LTSP 4.2, by the way. I checked the IRC channel once before and only one person responded, but I'll give it another shot. Are there any drawbacks to constantly polling the card reader? -Rob ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
