RE: Machine does not find AT keyboard with 2.6.13.1

[Roger Heflin]

Vojtech,

Adding usb-handoff fixed the problem, the keyboard/mouse is found
and works correctly.

I never would have guessed that a usb option would fix a ps2 issue.

                       Thanks
                       Roger 

> -----Original Message-----
> From: Vojtech Pavlik [mailto:vojtech@xxxxxxx] 
> Sent: Friday, September 16, 2005 6:46 AM
> To: Andrew Morton
> Cc: Roger Heflin; linux-kernel@xxxxxxxxxxxxxxx; Dmitry Torokhov
> Subject: Re: Machine does not find AT keyboard with 2.6.13.1
> 
> On Fri, Sep 16, 2005 at 02:47:10AM -0700, Andrew Morton wrote:
> > "Roger Heflin" <rheflin@xxxxxxxxx> wrote:
> > >
> > > I have an older machine that fails to find the AT 
> keyboard.   The machine is
> > >  based
> > >  on an Intel 7501 chipset.
> > > 
> > >  Under the default fedora core 4 kernel, it found the 
> keyboard and 
> > > that  keyboard  worked in UP mode, in SMP mode the 
> machine crashed, 
> > > but that is a different  issue.
> > > 
> > >  Under 2.6.13.1 the machine boots under SMP and does not crash, 
> > > dmesg does  not report  the keyboard being found, and the 
> keyboard 
> > > fails to work.  The .config file  does have
> > >  CONFIG_KEYBOARD_ATKBD set to Y.   The keyboard was being 
> found was seen on
> > >  the default
> > >  fedora core 4 kernel.   There are no extra options on 
> the boot cmdline.
> > > 
> > >  The important messages seem to be:
> > > 
> > >  Fedora Core 4 default UP kernel boot:
> > >  Sep 15 19:55:12 node001 kernel: serio: i8042 AUX port at 
> 0x60,0x64 
> > > irq 12  Sep 15 19:55:12 node001 kernel: serio: i8042 KBD port at 
> > > 0x60,0x64 irq 1  Sep 15 19:55:12 node001 kernel: input: AT 
> > > Translated Set 2 keyboard on  isa0060/serio0
> > > 
> > >  New boot (2.6.13.1 smp boot)
> > >  Sep 15 21:12:35 node001 kernel: i8042.c: Can't read CTR while 
> > > initializing  i8042.
> 
> "usb-handoff" on the kernel command line should solve this. I 
> thought we already had that as a default, or was the patch to 
> make it so dropped?
> 
> > >  The i8042 is of course missing out of /proc/interrupts 
> on the new boot.
> > 
> > That I8042_CMD_CTL_WCTR write-and-test seems to be new.  
> Can you try 
> > taking it out?
> 
> It's not a test, it's enabling the port interrupt. It won't 
> work without it at all.
> 
> > --- devel/drivers/input/serio/i8042.c~a	2005-09-16 
> 02:45:02.000000000 -0700
> > +++ devel-akpm/drivers/input/serio/i8042.c	2005-09-16 
> 02:46:51.000000000 -0700
> > @@ -305,11 +305,6 @@ static int i8042_activate_port(struct i8
> >  
> >  	i8042_ctr |= port->irqen;
> >  
> > -	if (i8042_command(&i8042_ctr, I8042_CMD_CTL_WCTR)) {
> > -		i8042_ctr &= ~port->irqen;
> > -		return -1;
> > -	}
> > -
> >  	return 0;
> >  }
> >  
> > _
> > 
> > 
> 
> --
> Vojtech Pavlik
> SuSE Labs, SuSE CR
> 

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