Minecraft Forums

I haven't been able to find this exact issue anywhere via searches, similar, but not exactly what I'm seeing.

Sometimes, not always, when I move forward with W, I'm all of a sudden unable to use the mouse to turn while moving forward.

Only when I let go of W can I use the mouse again, but it also shoots to where I should have turned while moving.

So it's as if it records the mouse movement to one side or another, but only actually executes the turn when I let go of W.

Anyone ever see this? I tired upgrading to the most recent lwjgl.I use a das keyboard and logitech g500 wired mouse, i5 cpu, 8gb ram, 560ti video.

Try downgrading lwjgl to a little older version that may be more stable than the latest one and see if that makes any difference.

went down to 2.7.1 and no change

wired usb mouse

Are you plugging the mouse into a usb port on the keyboard?

no, all in the back of the PCi tried it with a wireless mouse i use on my laptop and was getting the same behavior

Somethings causing a conflict between your keyboard input and your mouse and I can't for the life of me think of what could be causing that. If its an IRQ conflict then that would indicate most likely a driver issue because modern systems use ACPI to manage those things.