On Mon, 26 Dec 2005, Laurent Pinchart wrote: > Hi everybody, > > I'm facing a weird USB problem. When plugging a high-speed device in a > friend's laptop running Gentoo, the kernel tells me "not running at top > speed, connect to a high-speed hub.". Both ehci_hcd and ohci_hcd are loaded, > and I tried all USB ports with no luck. > > The weirdest part is that if I reboot under Debian with the same kernel > binary > (both kernel image and modules), everything work fine. This is clearly a > distribution specific issue. Could anyone tell me where I should > investigate ?
A good place to start is to make sure that CONFIG_USB_DEBUG is on, and then look at (or post) the dmesg log. It's possible that some apparently unrelated program is preventing ehci-hcd from driving the device. Len Brown recently posted a similar problem on linux-usb-devel, but in his case it was two different sets of config options for the same kernel source -- one of them worked and the other didn't, for no obvious reason. Alan Stern ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
