Hi, I have some severe issues with USB on a new system. This is an Acer Aspire S5 (i7, Ivybridge) and the scanner can be mostly classified as non working. Symptoms: 1.) Start a scan application (e.g. simple-scan) 2.) Scan a page 3.) Exit the app 4.) Start a scan application (e.g. simple-scan) 5.) Scan a page.. In step five the scanning will not start. There is no kernel output. I have tried putting a USB 2.0 hub between the physical port and the scanner but the symptoms remain the same. The issue occurs on 3.2, 3.5 and 3.6.x. I initially created a bug report on the kernel bugzilla and will link to the uploads I made there. lsusb without the scanner attached [1] lsusb with the scanner attached[2] pcap file of usbmon when it does not work[3] I am using Debian unstable and by default sane-backends is built with libusb-0.1 support, I rebuilt it to use libusb-1.0.0. I have seen an old mail from Sarah about xhci/libusb and I added the following to my cmdline (usbcore.usbfs_memory_mb=1000) but it didn't change anything. I am using 3.6.2 right now and have enabled the xhcd debug option and can provide more output. I have a trace of a successful scan but it was too big to be uploaded. I have recompiled 3.6.2 kind regards holger [1] https://bugzilla.kernel.org/attachment.cgi?id=83461 [2] https://bugzilla.kernel.org/attachment.cgi?id=83471 [3] https://bugzilla.kernel.org/attachment.cgi?id=83481 -- 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
