Hello Gerhard, On Thu, May 17, 2012 at 2:03 AM, Gerhard Thomas <gerhardthomas123@xxxxxxxxxxxxxx> wrote: > I am just as surprised for the very same reason. It almost seems like this > was done on purpose. > > I've got one last idea. I am going to use XP or UBCD to check if other than > the installed windows versions detect anything. Try using live distributions of Linux, also don't use the recent version of ubuntu they seem buggy about the cando touch screen driver, also try using 32-bit versions of distributions. I observed the dmesg and lsusb log of the cando touchscreen of an Acer 1825PTZ, it seems that the Cando touchscreen is detected by and attached to the UHCI controller. I also observed the screen shots by Gerhard, the cando touchscreen is a full speed device and in windows it is able to detect it, the Intel C200 chipset supports full speed,high speed and low speed device; the EHCI driver in Linux wasn't successfully able to enumerate it. The dmesg and lsusb list is provided in the link below, "https://launchpadlibrarian.net/95270794/BootDmesg.txt"; "https://launchpadlibrarian.net/95270802/Lsusb.txt"; Alan sir, isn't it a possibility that the Cando touchscreen was not detected by the Linux kernel as a full speed device??? UHCI controller isn't present in the laptop used by gerhard so i am guessing that maybe the possibility. -- Regards, Anil Nair -- 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
