On Thu, November 29, 2007 1:49 am, Yousef Lamlum wrote: >> Hey Yousef, >> >> Yousef Lamlum wrote: >>> Hi, >>> >>> Perhaps this is the wrong place to ask but I've been having a USB >>> related issue with my Artec T14BR (Ultima Electronics). It's a USB 2.0 >>> device and it's plugged in to a PCI USB 2.0 card (with NEC chipset). >>> The problem is this: When booting from cold (powered off), the Ubuntu >>> boots fine but does not recognise the T14BR. dmesg tells me "usb 3-3: >>> device descriptor read/64, error -62". Subsequent reboots do not make >>> the device work either. >>> >>> However, if I physically unplug and replug in the device it is picked >>> up, the driver loads and it works instantly, and remains working with >>> each reboot until the computer is powered down. >>> >>> I've researched the problem, and tried a variety of suggestions (tried >>> other USB ports on the card, passing boot options to the kernel, trying >>> different cables) all with no difference. >>> >>> Given that a fair few of you use USB 2.0 devices, has anyone come >>> across >>> this problem before, and if so, does anyone have a solution? >> >> This is because the firmware is not part of the initrd/initramfs >> used by ubuntu. >> You'll have to create on with the needed files. >> >> -- >> flip > > Thanks for this. I've just been looking into how I can include the > firmware into the initramfs image used by Ubuntu 7.10 and have drawn a > blank. > > Also this solution seems a little odd to me. Admittedly my Linux > experience is limited, but why is the firmware needed so early on in the > booting process? Isn't the loading of firmware onto the device a process > that occurs when the module loads? > > If this is a elementary question please excuse my lack of knowledge! I'd also suggest you look at hotplug / coldplug services. I'm not sure how Ubuntu does this, but I think that coldplug is responsible for initializing devices already connected when the computer boots, and hotplug is responsible for devices that get plugged / unplugged while the computer is running. Maybe coldplug isn't running on startup on your PC ? Robert. _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
