As to the USB issue, did you try the workaround on the Wiki? There's a bit of weirdness with USB host.

http://hackspire.unsads.com/wiki/index.php/Linux#USB

Well, yesterday before i tried to use the keyboard or the pendrive I've read all the information of that page of your link. The only thing that I don't understand is: when i try to use the pendrive i really should connect the nspire to a computer before use the bootloader? Because I never tried that...

You can try the next expanded version.
The defconfig kernels may work, too, but I don't know
whether USB keyboard support is enabled.

with the next expanded version it's the same thing: nothing happens -.-
i'll try now the defconfig

No messages at all?
Could you try some older kernels?
Does ti's os notify you about the hub been plugged in?

no messages at all -.-
wich kernels? give me a link of one
no, but ti'os never notified me when i connect the nspire to the computer or other nspires :S

Quote

I found that kernels that worked with initrds did not work with usb, and kernels with usb did not work with initrds.

Really? Mine works fine with both.

The dmesg output seems right, but lsusb should definitely output something relevant.
Could you try to unplug the hub before booting and plugging it in after it's booted?
Do you have a powered usb hub (which you need)?

when i type the lsusb command nothing happens, no messages, just go to the next line
i will try that you said now, just wat 5 minutes
and of course that i've the powered usb hub -.-

Could you see some messages?

no -.- i open the Linux and when appears "nanocx login:" i connect the keyboard but nothing happens -.- i try to type and nothing happens before or after I write "root" on the login

Could you post the output of "lsusb"(all lines) and "dmesg"(the lines that seem relevant)?

the lsusb command i use it but nothing happens

i'm trying to use the keyboard on my Linux kernel but i can't -.- i type on the keyboard and nothing happens -.-
i will tell all that i've done:
1- i've downloaded the kernel (http://tiplanet.org/nspire-linux-builds/zImage_expanded_latest.tns) and rennamed it to "zImage.tns", i've downloaded the initrd (http://tiplanet.org/nspire-linux-builds/start_initrd.ll2.tns), the binary (http://tiplanet.org/nspire-linux-builds/linuxloader2.tns), the script (http://tiplanet.org/nspire-linux-builds/start_initrd.ll2.tns) and the ndless.cfg.tns edited with that line "ext.ll2=linuxloader2" (http://tiplanet.org/nspire-linux-builds/ndless.cfg.tns)
2-i've replaced the ndless.cfg.tns on my nspire touchpad non-cas.
3-i've created a folder named "Linux" on my nspire and i've send the zimage, initrd, script and Linuxloader
4- i've used Linux, all working good, just exploring, and today i tried to use the keyboard.
5- for use the keyboard i rebooted, connected the Nspire to a powered usb hub while in Nspire OS before running the bootloader, runned the initdr script, the Linux opened, i've connected the keyboarb to the powered usb hub but when i type nothing happens :s

what am i doing wrong?? :?

(sorry about bad english )

i don't understand this because i've done almost the same of this guy on the beggining of the video: http://www.youtube.com/watch?v=B2MiVkXhAYs, the only diferences are that i use the script wich adds that cmdline and my Linux have "nanocx login" instead of "buildroot login"