MarcB wrote:
> Z.K. wrote:
>
>> jebblue wrote:
>>> On Sun, 23 Dec 2007 05:13:13 +0000, Z.K. wrote:
>>>
>>>> I was wondering if someone could tell me how do I tell if my kernel has
>>>> USB printing enabled? When I open up CUPS and try to add a printer
>>>> there is no option for selecting a USB printer even though the printer
>>>> is plugged in. I tried restarting CUPS, but still no luck.
>>>>
>>>> Z.K.
>>> Try this in a shell window:
>>>
>>> # shake up the usb 2 driver
>>> sudo modprobe -r ehci_hcd
>>> sleep 5
>>> sudo modprobe ehci_hcd
>>> sleep 15
>>>
>> Just as a test a thought I would try a suggestion on another USB port.
>> I was using my front USB ports and I had tried both of them with no
>> luck. So, I thought what the heck, I will try one of the rear USB
>> ports. To my surprise, it worked and has detected the printer. Why
>> would the front USB ports not work and the back ones would. I would
>> think the hardware would be the same. This is just weird though I am
>> glad it is working.
>>
>> Thanks everyone for all the help though and if anyone has any idea why
>> my only my back USB ports that are built into the motherboard work and
>> my others don't, I would like to know.
>>
>> Z.K.
>
> On my PC, the USB ports on the back are 'real' usb ports, the ones on the
> front use a built in usb hub.
>
> When I want to make backups, I have to connect my external HD in the back to
> have reasonable disk speed
>
>
Interesting, I have never heard of that before. I have 4 internal USB
connectors on my mother board aside from the those directly connected to
the motherboard on the back plane. My front USB connectors are
connected to one of the internal connectors. I did notice though a
wakeup power jumper for the USB connectors; it might be I need to use
that jumper to fix my problem though I don't have this problem in
windows so I am a bit skeptical that this will work either.

Z.K.