From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 21 Sep 2001 05:12:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 21 Sep 2001 05:12:40 -0400 Received: from mail.pha.ha-vel.cz ([195.39.72.3]:31242 "HELO mail.pha.ha-vel.cz") by vger.kernel.org with SMTP id ; Fri, 21 Sep 2001 05:12:36 -0400 Date: Fri, 21 Sep 2001 11:12:50 +0200 From: Vojtech Pavlik To: David Balazic Cc: "linux-kernel@vger.kernel.org" Subject: Re: Magic SysRq + Message-ID: <20010921111250.A15010@suse.cz> In-Reply-To: <3BAB0335.939E59D7@uni-mb.si> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <3BAB0335.939E59D7@uni-mb.si>; from david.balazic@uni-mb.si on Fri, Sep 21, 2001 at 11:07:01AM +0200 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 21, 2001 at 11:07:01AM +0200, David Balazic wrote: > Vojtech Pavlik (vojtech@suse.cz) wrote : > > > On Wed, Sep 19, 2001 at 08:56:13AM -0700, Randy.Dunlap wrote: > > > (and maybe earlier...) > > > > > > Simple problems grow... > > > > > > Keith Owens has already noted one problem in sysrq.c (2.4.10-pre12). > > > > > > Beginning: > > > > > > I have an IBM model KB-9910 keyboard. When I use > > > Alt+SysRQ+number (number: 0...9) on it to change the > > > console loglevel, only keys 5 and 6 have the desired > > > effect. I used showkey -s to view the scancodes from > > > the other keys, but showkey didn't display > > > anything for them. Any other suggestions? > > > > Most likely the keyboard scanning matrix doesn't allow that combination. > > Quite a large number of keyboards doesn't allow multiple keys pressed > > (except for shift, ctrl, alt, which are separate) at once. > > "we saved 13 cents on keyboard costs !" Oh yes, you can save some diodes if you don't want all keys pressed at once ... > On my Cherry G-83 keyboard ( crap/shit/$"#$"$" !!! ) the alt-SysRq-B > ( reboot ) combination does not work. I don't know about other combinations. > > Workaround that works for me : press ALT , press SysRq , release ALT , press B Yes, that's why this workaround was implemented. -- Vojtech Pavlik SuSE Labs