I recently installed Mint on a convertible notebook a Asus T300chi with disk encryption enabled. Everything works fine, however the T300chi uses a bluetooth keyboard that can't be utilize during the password prompt to decrypt the disk. I have to plug in a usb keyboard to enter in my password which isn't very convenient.

My question is: is there a way to enable touchscreen support and a onscreen keyboard for use during the decryption password prompt?

Thanks!

Can you be a bit more specific than "disk encryption enabled"? There are many ways to achieve disk encryption. The following options come to mind:
A) Some Mint / Ubuntu specific setup with ecryptfs
- Sorry, cannot help with that

B) LUKS / LVM setup using cryptsetup
If that is what you are using, more questions need to be answered
- Is your root file system (i.e. the operating system) encrypted? If it isn't (i.e. you have a separate data partition and only that is encrypted), you could just not have the data partition mount at boot time. Once your OS is fully booted you'd have all the drivers available and could manually mount the data partition.
- If your root filesystem is encrypted: do you have an unencrypted boot partition? In that case, you could probably get the needed drivers into the initial ramdisk, but you'd probably have to create it yourself rather than using the standard one of your distro. Alternatively, you could recompile the kernel and make sure the needed drivers are included rather than being optional modules. If that will be sufficient to actually make the driver available on time - I do not know.
- Is your boot partition encrypted, too (i.e. do you have to type the password before getting to the grub menu?). If so, it would surprise me if you could get this to work.

Hope this gives you some pointers. But as you can see, a more specific description of your setup is needed. If all the above does not make any sense to you, a more precise description of how you actually achieved the encryption setup (chosen options during install etc...) would also help.

I believe my setup is LUKS / LVM using cryptsetup. When I hold shift while booting I can get to the grub menu, from there when I select Linux Mint it takes me to the password prompt where I enter my password to decrypt. I only have my /root partition encrypted. my /boot partition is not encrypted.

Ok so it might be worth trying to compile the required drivers into the kernel statically. Again I don't know if it would make them available soon enough, but I'd give it a try.

Are you comfortable with compiling the kernel? You would typically find your old configuration file in /boot.
You can use this as a base and check for your drivers in make menuconfig.

If they are selected as modules, make them static and see if that helps. If you need more detailed description of the above steps do not hesitate to ask.

Just thinking: Is that bluetooth keyboard at the same time the display that shows the password prompt? At that stage you obviously don't have X yet, so if anything the keyboard would have to be provided by the device. If you need the OS to start the on screen keyboard I don't think you can get this working during the early boot phase...

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