Date: Sat, 21 Jan 2006 01:09:32 -0800
From: Andrew Morton <akpm@osdl.org>
To: "Carlo E. Prelz" <fluido@fluido.as>
Cc: linux-kernel@vger.kernel.org
Subject: Re: ATI RS480-based motherboard: stuck while booting with kernel >=
 2.6.15 rc1
Message-Id: <20060121010932.5d731f90.akpm@osdl.org>
In-Reply-To: <20060120123202.GA1138@epio.fluido.as>
References: <20060120123202.GA1138@epio.fluido.as>
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"Carlo E. Prelz" <fluido@fluido.as> wrote:
>
> Best regards to all and everyone. I just purchased a new RS480 (Radeon
>  XPress200)-based motherboard. It is a Sapphire Pure Performance
>  PP-A9RS480. Mine is equipped with an Athlon64 3200+. I am attaching
>  the output of lspci -v
> 
>  When booting with kernels from 2.6.15-rc1 up (tested with 2.6.15-rc1,
>  2.6.15-rc5, 2.6.15 and 2.6.16-rc1), the boot process freezes after
>  displaying messages retated to registering io schedulers:
> 
>  ...
>  ...
>  io scheduler noop registered
>  io scheduler anticipatory registered
>  io scheduler deadline registered
>  io scheduler cfq registered
> 
>  There is no OOPS of any kind. The disk activity led remains on. With
>  both 2.6.14 and 2.6.14.6, boot regularly continues with:
> 
>  Floppy drive(s): fd0 is 1.44M
>  FDC 0 is a post-1991 82077
>  loop: loaded (max 8 devices)
>  pktcdvd: v0.2.0a 2004-07-14 Jens Axboe (axboe@suse.de) and petero2@telia.com
>  nbd: registered device at major 43
>  ...
>  ...
> 
>  I tried to enable all debug options in configure, but no new message
>  appears. 
> 
>  Important: I obtain the same result (frozen after "io scheduler cfq
>  registered") when booting with a 100MB netinst debian sid bootdisk,
>  downloaded last night. An older (9 month old) Ubuntu bootdisk boots
>  perfectly. Both cd's are AMD64-specific.
> 

Can you please add `initcall_debug' to the kernel boot command line? 
That'll tell us which function got stuck.

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