[ltp] Hotplugging USB Keyboard

[D. Sen]

Well, that worked....! Removed the usbkbd module from 
/lib/modules/2.4.20/XXXX....and the keyboard seems to work fine.

Sorry it took so long to test it...(been busy :)

Anyone care to explain why usbkbd is messing things up and how to stop 
it being compiled as a module?

DS

Tom Rockwell wrote:
> Hi again,
> 
> I'm really not an expert on this, but USB keyboards are supposed to 
> "just work" with the regular keyboard module (keybdev) and the basic USB 
> modules (usbcore, your controller driver, etc.).  RedHat doesn't put the 
> usbkbd module in the distro's kernels.
> 
> When I was looking into getting a USB keyboard, I did some googling to 
> figure out how to configure it, there isn't much info on configuring 
> them, simply because, in a standard kernel setup, they "just work".
> 
> Anyways, the only thing I can suggest is to try it without the usbkbd 
> module - e.g. find the usbkbd.o file, hide it by renaming to something 
> like usbkbd.o-hide, run "depmod -a", and see if the keyboard works.  If 
> this doesn't work, put the usbkbd.o file back where it was and do a 
> "depmod -a" again.
> 
> Cheers,
> Tom
> 
> D. Sen wrote:
> 
>> Thanks...
>>
>> If I do a `lsusb`, I see the keyboard listed.
>>
>> Its not just X. The keyboard doesnt function in the virtual consoles 
>> either....
>>
>> Tom Rockwell wrote:
>>
>>> Sorry I don't have a complete answer, but on my RedHat machines (7.3 
>>> and 8.0), I've never had to do anything to use a USB keyboard 
>>> (sometimes, I do have to plug it in twice to get it going).  Also, 
>>> RedHat doesn't configure the usbkbd module; it's not in the kernel at 
>>> all (I just checked the RH kernel config).  I think that the base USB 
>>> drivers along with keybdev are all that is needed, and that with this 
>>> config the USB keyboard appears to the system just as the regular 
>>> keyboard does.  There is no seperate device for the USB keyboard and 
>>> no special X11 configuration is needed.
>>>
>>> If you use the usbkbd module, does the USB keyboard show up as a 
>>> seperate device which does have to be configured?
>>
>>
>>
>>>
>>> Hope this helps or somebody else can provide a more complete answer.
>>>
>>> -Tom
>>>
>>> D. Sen wrote:
>>>
>>>> I am trying to hotplug a USB Keyboard into my thinkpad (running 
>>>> linux 2.4.20, Mandrake 9.0)
>>>>
>>>> I see all the relevant modules (usbcore, usb-uhci, keybdev, usbkbd) 
>>>> load up but the keyboard remains dead.
>>>>
>>>> If I power-up the thinkpad with the keyboard plugged in then the 
>>>> keyboard works.
>>>>
>>>> Is there a workaround to this? I dont always have my external 
>>>> keyboard when I am starting the laptop and I dont want to have to 
>>>> reboot just to make the keyboard functional.
>>>>
>>>> Thanks,
>>>> DS
>>>>
>>>
>>>
>>
> 
> 

-- 
D. Sen, PhD
http://www.auditorymodels.org/~dsen