Date: Sun, 18 Oct 2009 12:14:48 -0500 From: Chris Ruiz <yr.retarded@gmail.com> To: Stefan Ehmann <shoesoft@gmx.net> Cc: Ed Schouten <ed@80386.nl>, freebsd-current@freebsd.org, Hans Petter Selasky <hselasky@c2i.net> Subject: Re: ukbd: short freeze when activating LEDs Message-ID: <58c737d70910181014u7c32ffd2s8c0732a707d40a2f@mail.gmail.com> In-Reply-To: <200910181450.11838.shoesoft@gmx.net> References: <200909051806.07692.hselasky@c2i.net> <20090905182929.GB2829@hoeg.nl> <200910181450.11838.shoesoft@gmx.net>
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On Sun, Oct 18, 2009 at 7:50 AM, Stefan Ehmann <shoesoft@gmx.net> wrote: > On Saturday 05 September 2009 20:29:29 Ed Schouten wrote: >> * Hans Petter Selasky <hselasky@c2i.net> wrote: >> > On Saturday 05 September 2009 16:32:55 Stefan Ehmann wrote: >> > > Whenever I press capslock/numlock, the system shortly (< 0.5 ms) >> > > freezes. >> > >> > It might also be because the USB keyboard driver is using Giant, which >> > can be congested. >> >> For half a second? I experience the same issue. I also have the same >> issue with the Syscons VGA driver when switching windows. Some time ago >> I talked about this with some other people and it may be possible it has >> something to do with SMIs. Not sure... >> > > Recently, I got an off-list response pointing me the "Other" section of > http://wiki.freebsd.org/BugBusting/Commonly_reported_issues: > "When switching consoles (e.g. Alt-F2 to switch to ttyv1), a 2-3 second delay > is experienced" > > The suggested workaround (hint.kbdmux.0.disabled="1") also helps in my case. > So it's not necessarily USB-related. I'm my experience the "switching consoles" delay goes away when you remove atkbd and related options from your kernel if you only have a usb keyboard. I don't have that delay with kbdmux left compiled in. The delay most likely has something to do with locking, re: GIANT. -- Chris ----------------------------------------- http://twitter.com/chrisattack http://chrisattack.com
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