Date: Sat, 24 May 2008 13:16:33 -0700 From: Jeremy Chadwick <koitsu@FreeBSD.org> To: Fraser Tweedale <frase@frase.id.au> Cc: freebsd-hackers@freebsd.org, m_evmenkin@yahoo.com Subject: Re: temporary freezes when pressing capslock / numlock Message-ID: <20080524201633.GA81364@eos.sc1.parodius.com> In-Reply-To: <48378DA0.8040506@frase.id.au> References: <48378DA0.8040506@frase.id.au>
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On Sat, May 24, 2008 at 01:38:08PM +1000, Fraser Tweedale wrote: > Since upgrading to RELENG_7_0 I was experiencing momentary freezes (of > about .5 seconds) whenever the capslock or numlock buttons were pressed. Let me guess -- you're using a USB keyboard. > The issue occurs both in console and in X, and for both ULE and 4BSD. The > problem was reproducible with USB keyboards only (ukbd); atkbd seems fine. > It also occurs when numlockx is used to set numlock on or off without > keyboard interaction. I figured as much. I hadn't checked numlock/capslock myself, but vcons switching also has that problem. Yes, it's semi-documented; see section "USB" below: http://wiki.freebsd.org/JeremyChadwick/Commonly_reported_issues For what it's worth, the systems I've confirmed the problem on are Intel and nForce 4. Meaning, the issue is not specific to a single chipset. > Interestingly, if you add enough keyboards, the problem vanishes, which led > me to kbdmux. Sure enough, removing device kbdmux from the kernel makes > the problem go away (at the expensive of some functionality of course, but > this is my current workaround). An interesting find! I'll add this to the details in the above wiki. I've also CC'd kbdmux's maintainer. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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