linux-kernel - Re: Linux Kernel cfs scheduler and xorg kbd

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Date:	Wed, 01 Aug 2007 15:26:02 +0200
From:	Rene Herman <rene.herman@...il.com>
To:	Indan Zupancic <indan@....nu>
CC:	Andi Kleen <andi@...stfloor.org>, Ingo Molnar <mingo@...e.hu>,
	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	CK Mailinglist <ck@....kolivas.org>, teresa@...tka.net,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux Kernel cfs scheduler and xorg kbd

On 08/01/2007 03:07 PM, Indan Zupancic wrote:

> On Wed, August 1, 2007 14:50, Rene Herman wrote:

>> On 08/01/2007 02:34 PM, Indan Zupancic wrote:
>>
>>> On Wed, August 1, 2007 13:01, Rene Herman wrote:
>>>> Teresa was already using 2.6.22.1, with CFS (v19.1) patched in, so reverting
>>>> that would be a matter of patching it out again. She said she wasn't seeing
>>>> trouble on other kernels though.
>>>>
>>>> I was the one who also saw keyboard trouble on 2.6.22.1 without CFS by the
>>>> way -- and haven't (yet) seen any anymore since patching _in_ CFS v19.1...
>>> Could the people who had or have keyboard problems try out Dmitry's
>>> input locking patches, and see if those help: http://lkml.org/lkml/2007/7/24/17
>>> And if it does, report it to him, either there or here after CCing him.
>> I'm having trouble reproducing this at will -- it sounded as though Teresa
>> had less trouble at least originally. Teresa?
> 
> Same here, so testing is a pain. I was more thinking about running a patched
> version for a day or longer and see if it happened or not. For me it happened
> irregularly, but definitely a few times a day.
> 
> (It might help if people report what they're using. So, for what it's worth, I'm
> using a PS/2 keyboard with xorg 1.2.0 with the "keyboard" driver.)

PS/2 keyboard, X.org 1.3.0 (version is at the top of /var/log/Xorg.0.log, or 
wherever your distribution puts that log), and this xkb config (in 
/etc/X11/xorg.conf):

Section "InputDevice"
         Identifier      "Keyboard0"
         Driver          "kbd"
         Option          "XkbModel"      "pc104"
         Option          "XkbLayout"     "us"
         Option          "XkbVariant"    "euro"
         Option          "XkbOptions"    "compose:rctrl"
EndSection

(you can forget that XkbVariant -- it's not yet in most distributions).

Problem as observed here consists of a sporadically stuck delete key in 
Thunderbird 2.0.0.5, using kernel 2.6.22.1 vanilla -- not yet observed using 
2.6.22.1-cfs-v19.1

Rene.

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