linux-kernel - Re: i915: drm:i915_wait

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Date:	Sun, 22 Feb 2009 20:16:40 -0800
From:	Eric Anholt <eric@...olt.net>
To:	Niel Lambrechts <niel.lambrechts@...il.com>
Cc:	"linux.kernel" <linux-kernel@...r.kernel.org>
Subject: Re: i915: drm:i915_wait_irq EBUSY

On Sat, 2009-02-21 at 15:44 +0200, Niel Lambrechts wrote:
> Hi
> 
> I recently changed AccelMethod to XAA in my xorg.conf, and after
> resuming (from hibernate), my X-server crashed with the following dmesg.
> It was non-fatal, as I could restart X (from a black console screen -
> not sure if that is related). Never had any problems suspending to
> either disk/memory without this option up to now...
>  
> dmesg output:
> ata2.00: ACPI cmd e3/00:1f:00:00:00:a0
> succeeded                                                             
> ata2.00: ACPI cmd e3/00:02:00:00:00:a0
> succeeded                                                             
> ata2.00: ACPI cmd e3/00:1f:00:00:00:a0
> succeeded                                                             
> ata2.00: ACPI cmd e3/00:02:00:00:00:a0
> succeeded                                                             
> ata2.00: configured for
> UDMA/133                                                                             
> 
> Restarting tasks ...
> done.                                                                                   
> 
> ata2: exception Emask 0x10 SAct 0x0 SErr 0x0 action 0x9
> t4                                                   
> ata2: irq_stat
> 0x40000001                                                                                    
> 
> ata2.00: configured for
> UDMA/133                                                                             
> 
> ata2: EH
> complete                                                                                            
> 
> [drm:i915_wait_irq] *ERROR* EBUSY -- rec: 44209483 emitted:
> 44209484                                         
> [drm:i915_wait_irq] *ERROR* EBUSY -- rec: 44209483 emitted:
> 44209484                                         
> [drm:i915_wait_irq] *ERROR* EBUSY -- rec: 44209483 emitted:
> 44209484                                         
> [drm:i915_wait_irq] *ERROR* EBUSY -- rec: 44209483 emitted:
> 44209484                                         
> [drm:i915_wait_irq] *ERROR* EBUSY -- rec: 44209483 emitted: 44209484
> 
> The problem occurred on my Thinkpad W500, running OpenSUSE 11.1 with
> vanilla 2.6.28.6-pae kernel, using the integrated Intel Mobile GM45
> Express chipset.
> 
> Any ideas?

The chip is hung.  Don't use XAA -- it hasn't been the default or even
supported while your chipset has existed.

-- 
Eric Anholt
eric@...olt.net                         eric.anholt@...el.com



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