* Re: Magic SysRq +
@ 2001-09-21 9:07 David Balazic
2001-09-21 9:12 ` Vojtech Pavlik
0 siblings, 1 reply; 2+ messages in thread
From: David Balazic @ 2001-09-21 9:07 UTC (permalink / raw)
To: vojtech; +Cc: linux-kernel@vger.kernel.org
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 <number> 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 !"
On my Cherry G-83 keyboard ( crap/shit/$"#$"$" !!! ) the alt-SysRq-B
( reboot ) combination does not work. I don't know about other combinations.
Workaround that works for me : press ALT , press SysRq , release ALT , press B
--
David Balazic
--------------
"Be excellent to each other." - Bill S. Preston, Esq., & "Ted" Theodore Logan
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Magic SysRq +
2001-09-21 9:07 Magic SysRq + David Balazic
@ 2001-09-21 9:12 ` Vojtech Pavlik
0 siblings, 0 replies; 2+ messages in thread
From: Vojtech Pavlik @ 2001-09-21 9:12 UTC (permalink / raw)
To: David Balazic; +Cc: linux-kernel@vger.kernel.org
On Fri, Sep 21, 2001 at 11:07:01AM +0200, David Balazic wrote:
> Vojtech Pavlik (vojtech@suse.cz) wrote :
>
> > On Wed, Sep 19, 2001 at 08:56:13AM -0700, Randy.Dunlap wrote:
> > > (and maybe earlier...)
> > >
> > > Simple problems grow...
> > >
> > > Keith Owens has already noted one problem in sysrq.c (2.4.10-pre12).
> > >
> > > Beginning:
> > >
> > > I have an IBM model KB-9910 keyboard. When I use
> > > Alt+SysRQ+number (number: 0...9) on it to change the
> > > console loglevel, only keys 5 and 6 have the desired
> > > effect. I used showkey -s to view the scancodes from
> > > the other <number> keys, but showkey didn't display
> > > anything for them. Any other suggestions?
> >
> > Most likely the keyboard scanning matrix doesn't allow that combination.
> > Quite a large number of keyboards doesn't allow multiple keys pressed
> > (except for shift, ctrl, alt, which are separate) at once.
>
> "we saved 13 cents on keyboard costs !"
Oh yes, you can save some diodes if you don't want all keys pressed at
once ...
> On my Cherry G-83 keyboard ( crap/shit/$"#$"$" !!! ) 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
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