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From: Dmitry Torokhov <dtor_core@ameritech.net>
To: linux-kernel@vger.kernel.org
Subject: Re: 2.6.9+ keyboard LED problem
Date: Wed, 5 Jan 2005 13:28:37 -0500
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Cc: Meelis Roos <mroos@linux.ee>
References: <Pine.SOC.4.61.0501051856090.9146@math.ut.ee>
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On Wednesday 05 January 2005 12:04 pm, Meelis Roos wrote:
> 
> The input changes in 2.6.9 made keyboard LED setting unreliable. 2.6.8 
> is OK, 2.6.9, 2.6.10 and todays BK are buggy.
> 
> The problem is that setting the LEDs now interferes with keyboard and 
> ps/2 mouse input and makes the kernel lose key press and key release 
> events.
> 
> Short demonstation:
> #!/bin/sh
> while :; do xset led 3; xset -led 3; sleep 0.01; done
> 
> This script works from X but the same effect can be seen on the console 
> using setleds. The problem was found with ledcontrol package but is 
> easyly reproduced with the script above.
> 
> Key press and release events are lost, mouse movement is lost or 
> movement is converted into clicks or mouse loses sync (by dmesg info). 
> There are also messages like
> atkbd.c: Unknown key released (translated set 2, code 0xe0 on isa0060/serio0).
> atkbd.c: Use 'setkeycodes e060 <keycode>' to make it known.
> in dmesg.
> 
> Don't try the script without the sleep command unless you have a network 
> connection to log in and kill the script ;)
> 

Seems to work fine here. The led is blinking rapidly but I can type just
fine and touchpad works as well.

What kind of box do you have? UP/SMP, Preempt?

-- 
Dmitry
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