Hi, Short summary: I have HP1018 printer, and it works well in windows. When I use in in linux, I often see messages like: usbfs: USBDEVFS_CONTROL failed cmd python rqt 128 rq 6 len 255 ret -110 This is using hp backend that talks to printer using usbfs. I also tried usblp, but it just doesn't say anything in kernel log. I think it silently ignores similar errors, because the end result is the same, the printer sometimes works, but sometimes doesn't. (printer needs firmware to be uploaded to it, and I do upload it). On the other hand, IF I remove _ether_ ehci-hcd or uhci-hcd from kernel, then everything works fine, I already rebooted the printer many times, used it to print, upload firmware, and everything just work, but as soon as I load the second driver it fails in same way again. USB issues with this class of printers are nothing but new, for example see: http://foo2zjs.rkkda.com/forum/read.php?9,374 https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.15/+bug/54419 I compiled without CONFIG_USB_EHCI_ROOT_HUB_TT and it did help (didn't that much testing, but at least firmware loads ok, and no error messages) Looking for your comments, Best regards, Maxim Levitsky -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
