Mouse + Keyboard not working during installation

[yonyz]

Try opening a thread asking if someone else made a DSDT for your motherboard.

 

[ilhanraja]

I've seen a trend in this forum, Intel Processor + Intel Graphics + Nvidia Card = No Keyboard or Mouse and issues with it.

 

[arsradu]

Just in case anyone else stumbles across this thread, this was the cure for my particular frustration. I could get to the installation process, but just couldn't click the button. Infuriating.

Older build with a GA-P55A-UD3 motherboard.

So what exactly did you do to get it to work? Cause I've got exactly the same issue and it's driving me crazy since it works perfectly with Mavericks (Unibeast + Mavericks). But it wouldn't work for Yosemite. The keyboard seems to work in installer and it definitely works inside the OS itself (since I can input my password to login), if you've got enough patience to install it using only your keyboard, but the mouse doesn't. Can't click anything. There is only the pointer displayed. Oh, and funny thing, mouse-over (hovering) works as well. Just no clicks.

I would have used Unibeast + Yosemite as well, if it would work. But it doesn't. There is no Unibeast for Yosemite, for as far as I know.

I don't get it. Same USB port, same keyboard + mouse, different Mac OS X version (but I apparently am one of the very few to have this exact issue). Works in Mavericks. Doesn't work in Yosemite.

I thought it's because of the boot loader. So I tried both Clover and Chameleon. Same result. I've tried multiple IOUSBFamily and IOUSBMassStorageClass kexts. Even the ones from Mavericks. Same result.

Specs I've got:
Motherboard: GA-B85-HD3
CPU: Intel i5-4570
GPU: MSI Nvidia GTX 650 OC 2GB RAM
Mouse + Keyboard combo: Logitech LX 300

So...any idea why is this and how to fix it?

 

[symbiot999]

I tried this but it doesn't seem to be working I pulled the dstst from my motherboard with the editor would that make any difference ?

 

[insitemobile]

Thanks, PCIRootUID=0 boot flag fixed my USB not working problem after updating to 10.9.5...

 

[insitemobile]

UPDATE! The ONLY thing that works consistently now is to press the down arrow instead of entering the boot-flags, I "boot ignoring caches" and it is the only thing that has worked every time without fail so far. Saving me at least 30 minutes a day booting up...

 

[sfarris]

I am having the no keyboard and mouse issue for Snow Leopard 10.6.3 off of the installation disc? So I don't have multi beast in the loop? Any suggestions in this case?

 

[VioletDragon]

I am having the no keyboard and mouse issue for Snow Leopard 10.6.3 off of the installation disc? So I don't have multi beast in the loop? Any suggestions in this case?

Are you using USB Mouse and Keyboard? Do you have USB Legacy Support enabled in the BIOS?

 

[frencho]

mouse and keyboard to USB 3.0

Thanks dude! You just saved me a lot of hours!!

 

[DLEE]

I disabled IRQ for onboard sound and onboard video. My BIOS did not offer legacy mode but I did update to most current version.