View Full Version : Logitech MX Duo not working in grub after POST
18th September 2004, 01:26 PM
I'm just wondering if anyone else is experiencing this? For example when you turn on your computer at the beginning it performs a POST (power on self test) and the option to get into BIOS, which is fine on the mx duo. But after POST the keyboard is not functional when grub is loaded. So i can't choose which OS to use on my dual boot system. I'm currently using a PS/2 keyboard to allow to do this, once i'm in an OS the mx duo keyboard functions as normal. So basically between POST and in the OS the keyboard works but in grub it doesn't.
18th September 2004, 03:29 PM
I guess Grub is unable to use USB devices, this needs to be looked into as many people will be wanting to drop legacy PS/2 peripherals
18th September 2004, 06:52 PM
weird problem.....can you post your xorg.conf ?
btw, check this thread and answer from cracker it may help:
19th September 2004, 06:49 AM
His problem is in Grub, before the OS loads so I doubt the xorg.con would be the problem.
19th September 2004, 07:31 AM
Check your ps/2 settings in your browser, I have a feeling that this is a bios issue. What type of MX duo do you have? I have an mx duo for bluetooth and I had to make sure my bios settings were correct, there is a slight delay between the arrow key presses and grub moving to another selection, but mine works perfectly at boot. I have more problems with the mouse being detected when Fedora loads..it's a sort of "boot and pray situation" probably because of the fact that I am using a bluetooth reciever. Hopefully FC3 will fix this.
11th December 2004, 09:29 AM
I had the same problem. My usb keyboard and mouse (M$ Multimedia Pro) work in POST because the BIOS is designed to detect devices using PnP but if Legacy USB is disabled in the BIOS it will then turn off PnP checking and any software that runs before a PnP aware OS loads will not detect the usb keyboard and mouse.
GRUB or any software that loads before a PnP aware OS will be able to use the usb devices only if usb Legacy support is enabled..
Unfortunately, I found that Fedore 3 freezes at udev initialisation of audio (SB Live PCI enabled but onboard audio is disabled.) so I had to but the usb keyboard and mouse onto the PS2 port and disable usb Legacy support.
Now my keyboad and mouse work except for some mouse buttons and in console only mode some strange keyboard messages - I think it's the FLock key.
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