Date: Wed, 10 May 2006 12:03:36 +1000 From: Emil Mikulic <emil@cs.rmit.edu.au> To: Pascal Hofstee <caelian@gmail.com> Cc: current@freebsd.org Subject: Re: kbdmux oddity ? Message-ID: <20060510020336.GA25800@cs.rmit.edu.au> In-Reply-To: <1147219290.1410.6.camel@synergy.odyssey.homeunix.org> References: <1147219290.1410.6.camel@synergy.odyssey.homeunix.org>
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On Tue, May 09, 2006 at 05:01:30PM -0700, Pascal Hofstee wrote: > I recently decided to add kbdmux support to my default kernel config > since i noticed at times that upon kernel panics and similar events my > USB keyboard goes dead. > > Today i got to actually installing a kbdmux enabled kernel and came to > the conclusion that even though keys like Capslock, Numlock and > Scrolllock perform the functions they're supposed to do, the keyboard > leds seem to arbitrarily decide wether or not they want to toggle > on/off. > > on console i noticed that usually after hitting e.g. caps lock a few > times the leds decdide to "work with me again" and toggle on/off > accordingly .. until i hit any actual textual input .. at which point > the previous eratic behavior has resurfaced. > > Similar problems exist in X as well ... though seem to be even more > eratic there. > > Removing kbdmux from my kernel seems to restore normality again. > > Am i the only one seeing these problems ? I'm seeing a similar (but different?) problem - I get an interrupt storm every time I hit Caps Lock or Num Lock, or flip VTs in text mode. If XMMS is running, the music skips. Normally, if I'm hitting letter keys, I never see any irq1: atkbd0 interrupts. If I bounce on the Caps Lock, I can get it as high as 72/sec. Running top(1), I can get system time up to about 50% by pounding away at Caps Lock. Normal typing doesn't affect the system time much, it fluctuates between 0% and 1%. This is with 7-CURRENT, GENERIC, on x86, from yesterday. And it's on a Dell GX280 with a USB keyboard. I've seen similar issues on a Dell Poweredge SC430, again with a USB keyboard. --Emil
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