On Sat, 27 Jan 2007, Prakash Punnoor wrote: > NAK. My scanner is fine. Today I have a bit time for testing and so far > (using > 2.6.20-rc6): > > - The scanner on the Eizo built-in hub makes problems with usb suspend. > - The scanner connected directly works fine. Interesting though that I get > > > usb 1-1.3: USB disconnect, address 16 > usb 1-1.3: new full speed USB device using ehci_hcd and address 17 > usb 1-1.3: configuration #1 chosen from 1 choice > > every time I call sane-find-scanner. Above message refers to my hub, as my > scanner is > > usb 2-2: new full speed USB device using ohci_hcd and address 4 > usb 2-2: configuration #1 chosen from 1 choice > > So, if you want something to blacklist, it should be the hub and not the > scanner.
Let me get this straight. The scanner works fine so long as it isn't connected through the hub, right? And some other device connected through the hub (what is 1-1.3 above?) also fails? > - The scanner on the hub makes no problems with 2.6.19-rc5 with usb suspend, > as I wrote earlier. I will try to find out which rc kernel started with it > and try to identify the patch causing it. > > Hope to be able to provide more Infos later... > So, > > I did more tests and found out that the breakage with the scanner/hub and > USB_SUSPEND combination came in with 2.6.19-git1. 2.6.19 release is fine. In > the patch I see a lot of usb related stuff, so it is too hard for me to test > by. Any advise? It's hard to imagine what difference CONFIG_USB_SUSPEND could make in this situation. Here's something you can do to help: Get a usbmon log. Instructions are in the kernel source file Documentation/usb/usbmon.txt. Make a log under 2.6.19 and under 2.6.20-rc6 so we can compare them for changes. Start each log before plugging in the EIZO device and keep going through the attempt to run sane (with the scanner plugged into the EIZO hub, of course). 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 _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
