On Tue, 12 Dec 2006, Zhang Daniel wrote: > Hi, > I am trying to run two cameras in YUV 640x480 30 fps in Linux. The first > one is running correctly. But the second one always fails with "NO SPACE" > error. > I was told this is bandwidth issue. But why they can work run under Windows > XP. > > I am curious if there is something different bandwidth allocation mechanism > between Windows and Linux.
Of couse there is a difference. In fact the Windows driver and the Linux driver have no code in common -- if they did it would be a violation of the GPL. > Or there is one silver bullets (some patch > somewhere?). You can try http://www.kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/gregkh-03-usb-2.6.19-git19.patch It has some experimental code to improve the scheduling of ISO transfers in ehci-hcd. (And obviously it applies to the 2.6.19-git19 kernel.) Alan Stern ------------------------------------------------------------------------- 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-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
