On Saturday 14 July 2007 18:55, Haines Brown wrote: > Hugo Vanwoerkom <[EMAIL PROTECTED]> writes: > > I'm not sure if Hugo was responding to my question or some other, but > in any case, this allows me to ask a simple question or two. > > My problem was that the kernel stopped recognizing my camera (nothing > appears in kernlog/syslog or lsusb), although all other USB devices > are recognized. > > I gather that when a kernel is compiled, makeconfig will have a > section for USB Support, which should be enabled, and a choice USB > type (in my case is OHCI), a built in Preliminary USB device > filesystem, and a choice of devices such as SB OV511 Camera > support. > > However, my kernel config-2.6.18-4-686 has nothing of any of > this. If these are part of kernel configuration, why don't I see them > in the kernel config file? > > I'm told that USB support in the Linux kernel is buggy. Is > it possible a kernel bug could cause it to miss my camera but still > see all other USB devices? Is it likely my kernel would support my > camera, and then for no obvious reason stop? > > If I were to reconfigure and recompile my kernel to enable > CONFIG_USB_DEBUG, would I do that by changing > > # CONFIG_USB_DEBUG is not set > to > CONFIG_USB_DEBUG=y > > What would be the effect? Would I then get error messages in kernlog > whenever the kernel tried but failed to see my camera? Would these > messages definately tell me if the kernel were buggy? > > If my kernel were buggy, how would I know if there were a patch to fix > the problem? > > When I was running sarge, I had a /proc/bus/usb/drivers directory on > which was mounted usbdevfs, hub and usblp. The manual for The Linux > USB Sub-System says that the usbdevfs must be mounted somewhere, and > conventionally on /proc/bus/usb, and that it will hold a drivers > pseudo-file. Has that changed under Etch? I don't have usbdevfs > mounted anywhere ($ mount reports procbususb is mounted on > /proc/bus/usb, although I see no procbususb file there). Wouldn't the > absense of a mounted usbdevfs definitely interfere with the kernel's > ability to see my camera? > > -- > > Haines Brown, KB1GRM
Just a thought, and I don't know which kernel you were using when all your usb devices were working ok, but I installed Debian from Woody disks which were upgraded to Sarge, and with the 2.6 kernel IIRC I had problems with my usb midi keyboard, and had to add to /etc/modules uhci_hcd. I see that that module isn't showing on your list. Currently running Sarge, Etch, and Lenny. Only 2 devices on the USB though. The usb midi keyboard, and a webcam. Nigel. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
