Is your configuration several separate devices, or one device with multiple slots?
Have you tried using a powered hub to make certain all your devices are getting the required power? Have you tried turning of hald (known to cause problems to many usb-storage devices)? Matt On Sun, Sep 24, 2006 at 08:51:37PM +0200, Slawomir Bialek wrote: > Hi, > > I have three usb SD memory card readers/writers > attached to linux box. I am trying to setup > a configuration which will be able to write data > on all three (and more in near future - e.g. 7 ) SD cards simultaneously. > Everything works fine with just only one card I think. > > When I am trying to write at one moment to > 2-3 SD Cards strange things happen. Sometimes it > works, but sometimes it gives me many > "reset high speed USD device using ehci_hcd and address ..." > in the logs, sometimes even "lost page write due to I/O error..." > (but this one not too offen) and it blocks all activity > on those cards to 1-2 minutes (also hal events - inserting > and removing cards are dalayed). > > I have tryied many diffrent configurations > on two different PCs, with and without USB hub, > on RHEL 4.x (kernel 2.6.9) and Knoppix (kernel 2.6.17). > > Am I doing something wrong? What should I check or try? > Hardware, newer kernel? > Has anyone tried such things? > > Thanks. > > ps. Mentioned SD Cards have max speed ~4.0 MB/s. > -- > <> Netinfo: Product Development > <> tel: 32.3460490 fax: 32.3460492 > <> http://www.netinfo.pl/ > <> JID: [EMAIL PROTECTED] > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys -- and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Linux-usb-users@lists.sourceforge.net > To unsubscribe, use the last form field at: > https://lists.sourceforge.net/lists/listinfo/linux-usb-users -- Matthew Dharm Home: [EMAIL PROTECTED] Maintainer, Linux USB Mass Storage Driver I don't have a left mouse button. I only have one mouse and it's on my right. -- Customer User Friendly, 2/13/1999
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