The output from /proc/bus/usb/devices shows the device isn't connected or
off. It be plugged into a socket that doesn't have a host controller
loaded. Ah, actually it is becaused you don't the the low/full speed
driver loaded. You need to load either usb-uhci or usb-ohci (you'll find
the answer with "lspci -v | grep HCI | awk '{print $NF}'").
On Sun, 23 Mar 2003, Javier wrote:
> Hello,
>
> I'm trying to configure an HP845C USB printer under Linux. It worked perfectly
> under SuSE, but I had to change to Gentoo, and I'm not able to make it work
> at all. I'm using 2.4.20 kernel.
>
> I do:
> modprobe ehci-hcd
> modprobe printer
>
> It simple do not detect any printer. This is my /dev/bus/usb/devices:
>
> T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 6
> B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
> D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS= 8 #Cfgs= 1
> P: Vendor=0000 ProdID=0000 Rev= 2.04
> S: Manufacturer=Linux 2.4.20-gentoo-r1 ehci-hcd
> S: Product=VIA Technologies, Inc. USB 2.0
> S: SerialNumber=00:10.3
> C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA
> I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
> E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=256ms
>
> This is what dmesg indicates:
>
> PCI: No IRQ known for interrupt pin D of device 00:10.3 - using IRQ 11
> hcd.c: ehci-hcd @ 00:10.3, VIA Technologies, Inc. USB 2.0
> hcd.c: irq 11, pci mem e1d56000
> usb.c: new USB bus registered, assigned bus number 1
> ehci-hcd.c: USB 2.0 support enabled, EHCI rev 1. 0
> hub.c: USB hub found
> hub.c: 6 ports detected
> usb.c: registered new driver usblp
> printer.c: v0.11: USB Printer Device Class driver
>
> But there is not /dev/usb/lp0 at all and not any message from kernel
> indicating that a printer has been connected.
>
> Of course my printer is fisicaly connected perfectly.
>
> How do I do to make it work?
>
> Thank you.
>
>
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