Am Donnerstag, den 29.11.2007, 01:49 +0000 schrieb Yousef Lamlum: > > 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? Are you unsing the dvb-modules that ship with ubuntu? I guess what they do, when building the initramfs, is simply copy _all_ modules into it. During the boot (initramfs)-init gets the hotplug events and loads the module. But the module can not find the firmware ... You may want to read the early-userspace ReadMe: /usr/src/linux/Documentation/early-userspace/README and /usr/src/linux/Documentation/filesystems/ramfs-rootfs-initramfs.txt You could remove the module from the initramfs. -- flip _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
