linux-kernel - Re: [drm:i915_driver_irq_handler] *ERROR* EIR stuck: 0x00000010, masking

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Date:	Mon, 27 Jul 2009 12:53:56 -0700
From:	"Justin P. Mattock" <justinmattock@...il.com>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [drm:i915_driver_irq_handler] *ERROR* EIR stuck: 0x00000010,
 masking

Jesse Barnes wrote:
> On Mon, 27 Jul 2009 10:37:04 -0700
> "Justin P. Mattock"<justinmattock@...il.com>  wrote:
>
>    
>> Jesse Barnes wrote:
>>      
>>> On Sun, 26 Jul 2009 21:12:49 -0400
>>> Justin Mattock<justinmattock@...il.com>   wrote:
>>>
>>>
>>>        
>>>> to my surprise this machine still works...
>>>> (dell inspiron 1200)
>>>> Anyways in dmesg I see:
>>>>
>>>> [   10.188083] b43-pci-bridge 0000:03:00.0: setting latency timer
>>>> to 64 [   10.191947] ssb: Sonics Silicon Backplane found on PCI
>>>> device 0000:03:00.0 [   10.220248] fb: conflicting fb hw usage
>>>> inteldrmfb vs VESA VGA - removing generic driver
>>>> [   10.222343] Console: switching to colour dummy device 80x25
>>>> [   10.225625] Console: switching to colour frame buffer device
>>>> 128x48 [   10.278714] render error detected, EIR: 0x00000010
>>>> [   10.278717] page table error
>>>> [   10.278720]   PGTBL_ER: 0x00000100
>>>> [   10.278725] [drm:i915_driver_irq_handler] *ERROR* EIR stuck:
>>>> 0x00000010, masking
>>>> [   10.278742] render error detected, EIR: 0x00000010
>>>> [   10.278745] page table error
>>>> [   10.278747]   PGTBL_ER: 0x00000100
>>>> [   10.290087] [drm] LVDS-8: set mode 1024x768 c
>>>> [   10.640403] [drm] fb0: inteldrmfb frame buffer device
>>>> [   10.640597] [drm] Initialized i915 1.6.0 20080730 for
>>>> 0000:00:02.0 on minor 0 [   10.679818] b43-phy0: Broadcom 4306
>>>> WLAN found (core revision 5)
>>>>
>>>> direct rendering still seems to be intact,
>>>> suspend not sure(test in a moment).
>>>>
>>>>          
>>> Sounds like a dupe of the issue Frans reported.  We report errors
>>> like this now rather than silently ignoring them.  This one must be
>>> harmless or your machine wouldn't ever have worked. :)
>>>
>>>
>>>        
>> Seems harmless to me, one thing I see is
>> during the boot process Ill see the boot messages, then once
>> init/udev starts up, and loads i915 the screen will go black
>> for a tenth or so of a second, then goes back to normal. Now keep in
>> mind this might be something suse does during the boot process.
>> (I can try loading ubuntu/debian to see if the affects are the same
>> once I get a chance).
>>      
>
> Yeah that's probably just the i915 driver probing the outputs.  It
> shuts everything off to avoid showing any ugly load detect patterns or
> flicker.
>
>    
Alright,
Then that's pretty much everything, other than
a message that's been there, but now finally is showing itself.

Justin P. Mattock
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