Re: Is anyone else noticing more duplicate keypresses (bad debounce) in Lion?
Re: Is anyone else noticing more duplicate keypresses (bad debounce) in Lion?
- Subject: Re: Is anyone else noticing more duplicate keypresses (bad debounce) in Lion?
- From: Andy Lee <email@hidden>
- Date: Fri, 16 Sep 2011 21:27:00 -0400
Not sure what the connection is to Cocoa development, but FWIW I've noticed that when I start a burst of fast typing in a text field, sometimes my first character appears somewhere in the middle or at the end. It's as if something is screwing up the event queue. I can understand if there's a lag for some reason before my events can be processed, but it kind of erodes my confidence in the system when my keystrokes aren't processed in the right order.
I'm quite sure it isn't due to mistyping. It's a definite pattern where the first character appears multiple characters later and the other characters are in the correct order. I should file a Radar.
--Andy
On Sep 16, 2011, at 9:09 PM, G S wrote:
> Hi all.
>
> I'm seeing lots of duplicated keypresses on Lion. On my laptop,
> they're often (but not always) coincident with a little blip of disk
> activity; it's as if the system queues the keypress while it's
> momentarily busy, and then issues it twice when the disk blip is over.
> If I press a key during these mysterious disk spasms, it seems that
> it's always duplicated. I don't know what the disk is doing, since
> there's often nothing else running than a browser.
>
> I'm also seeing more repeats on my iMac. And although I tend to
> assume I'm just making typing errors, it sure seems like some
> keypresses are being missed.
>
> I'm using a wired, full-sized aluminum keyboard on the iMac, and a
> pre-unibody MacBook Pro.
>
> Just wondering if I'm imagining this.
>
> Gavin
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