Patch 2.4.9-pre4 kills mouse & keyboard

Tom Garland (
Wed, 12 Sep 2001 11:48:27 -0700

To Whom?

The following are my efforts to report a problem with
'Patch2.4.9-pre4' created by Kurt Garloff (
the email to him bounced, his was address obtained from DejaNews
postings. He is not in the 'MAINTAINERS' list.

The problem was also posted on thefollowing news groups.
Xref: sn-us comp.os.linux.development.system:124031
fa.linux.kernel:158958 comp.os.linux.x:181103

Thanks in advance - Tom

> Dear Kurt, the following is a report of a problem I submitted

> to comp.os.linux.development.system,fa.linux.kernel,comp.os.linux.x
> and I thought a mail to you also via Pan 0.9.7. (I think that the

> mail didn't make it to you). [:(]
> I am sending you this email hoping to get a response/fix? Please
> submit your name to the kernel 'MAINTAINERS' list for linux.
> I'll test any patches/changes you care to make.
> Thank you in advance for your help.
>> Path: sn-us!sn-xit-04!sn-post-01!!!not-for-mail
>> From: "Tom Garland" <>
>> Newsgroups: comp.os.linux.development.system,fa.linux.kernel,comp.os.linux.x
>> Subject: Patch 2.4.9-pre4 kills mouse & keyboard
>> Followup-To: comp.os.linux.development.system,fa.linux.kernel
>> Date: Fri, 31 Aug 2001 10:57:15 -0700
>> Organization: Posted via Supernews,
>> Message-ID: <>
>> User-Agent: Pan/0.9.7 (Unix)
>> Mime-Version: 1.0
>> Content-Type: text/plain; charset=ISO-8859-1
>> Content-Transfer-Encoding: 8bit
>> X-Complaints-To:
>> Lines: 35
>> Xref: sn-us comp.os.linux.development.system:124031 fa.linux.kernel:158958 comp.os.linux.x:181103
>> Description: When using a KVM (keyboard, video, mouse) manual switch,
>> input from both the mouse and keyboard are lost after switching from one
>> system to another. Because of this both systems have to be reset to
>> recover. The change that affects me seems to be in
>> 'v2.4.8/linux/drivers/char/pc_keyb.c'. No changes to .config, will send
>> if needed (PS/2 wheel mouse).
>> Prior to installing patch 2.4.9pre4 (using patch 2.4.9-pre3) on 2 systems
>> when switching between systems I would lose just the mouse wheel function
>> of switches 4 & 5 (wheel up and down). Switches 1, 2 and 3 worked fine as
>> did the keyboard. To recover from this situation all I have to do is start
>> a new x-server desktop, either by closing the current desktop and doing
>> startx or starting a new desktop using the x-server (ctrl-alt-f2, logon,
>> startx -- :1 ). No reset/boot necessary. [:-)] It seems to me that X does
>> some kind of mouse query or scan that activates it.
>> What does
>> " - Kurt Garloff: make PS/2 mouse reconnect adjustable like 2.2.x"
>> in patch 2.4.9-pre4 mean? I can't find any documentation on 'mouse
>> reconnect'.
>> Why did this 'fix' kill my keyboard input? I need it to recover from the
>> mouse problem, like maybe having a mouse scan/restart function or
>> executable?
>> I seems to me that this a a step backwards, unless we can find a solution
>> other the having to buy an expensive electronic KVM switch with keep-alive
>> ^^ than ^^
>> circuits to prevent losing both the keyboard and mouse when switching
>> systems. [:-(]
>> Thanks in advance for any help.
>> Remove void. in 'From:' for a valid reply address.
>> Tom Garland

-= Tom Garland =-

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