LP Bug 21558 - Thinkpad R31 requires 'i8042.nomux=1' on kernel commandline

Stefan Bader stefan.bader at canonical.com
Wed Oct 8 16:44:43 UTC 2008


Leann Ogasawara wrote:
> This should resolve LP Bug 21558 - Thinkpad R31 requires 'i8042.nomux=1'
> on kernel commandline.  It seems this patch accidentally didn't make
> it's way into Intrepid.  It's already applied in Hardy.
> 
> commit 2d47bb38404f36aa45e0cbacf5585af05fd34857
> Author: Colin Ian King <colin.king at canonical.com>
> Date:   Thu May 8 15:24:29 2008 +0100
> 
>     UBUNTU: SAUCE: Blacklist IBM 2656 in serio/i8042
>     Bug: #21558
>     
>     Fix regression for ThinkPad R31 (IBM 2656) with buggy embedded
>     controller/keyboard combo chip causing erratic pointer movement.
>     Blacklist IBM 2656 in seria/i8042.
>     
>     Signed-off-by: Colin Ian King <colin.king at canonical.com>
>     Acked-by: Stefan Bader <stefan.bader at canonical.com>
> 
> diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
> index c5e68dc..bde78a9 100644
> --- a/drivers/input/serio/i8042-x86ia64io.h
> +++ b/drivers/input/serio/i8042-x86ia64io.h
> @@ -270,6 +270,13 @@ static struct dmi_system_id __initdata i8042_dmi_nomux_table[] = {
>  			DMI_MATCH(DMI_PRODUCT_NAME, "M636/A737 platform"),
>  		},
>  	},
> +	{
> +		.ident = "IBM 2656",
> +		.matches = {
> +			DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
> +			DMI_MATCH(DMI_PRODUCT_NAME, "2656"),
> +		},
> +	},
>  	{ }
>  };
>  
> 
> 
> 
Applied

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