[ale] Weird behavior with Intel 965 graphics

[Chris]

Ok, looks like I'm barking up the wrong tree (sorta). The
"video.allow_duplicates=1" parameter is under the sysfs and requires
you to add it to /etc/default/grub, then do a "sudo update-grub". It
does get set on boot but the video kernel module still spits out the
same complaint and the blank screen problem still exists. Sounds like
a bug to me. I may try doing a manual kernel compile.

On Wed, Feb 15, 2012 at 2:14 PM, Chris <behrnetworks at gmail.com> wrote:
> Jim,
>
> Thank you for the quick response! Unfortunately, I don't see that
> sysctl at all in the output of "sysctl -a". Any other ideas?
>
> Thanks!
>
> Chris
>
> On Wed, Feb 15, 2012 at 12:06 PM, Jim Kinney <jim.kinney at gmail.com> wrote:
>> that seems like it's a param for sysctl. look in /etc/sysctl.conf as a place
>> to make it perm.
>> Test by looking in /proc/sys/ or /sys and echo that value into a file named
>> allow_duplicates that _should_ exist already. It may be hiding in the video
>> chipset namespace somewhere.
>>
>> On Wed, Feb 15, 2012 at 11:19 AM, Chris <behrnetworks at gmail.com> wrote:
>>>
>>> Hello,
>>>
>>> I'm seeing some odd behavior on my Dell Latitude D630. It's got the
>>> mobile GM965/GL960 Intel graphics chipset. I'm running
>>> Debian Wheezy on it and after grub loads, the screen goes blank. The
>>> laptop does boot, and I can log in and start an X
>>> session and get the screen back. If I plug an external monitor into
>>> the VGA port the problem doesn't appear. It seems to be
>>> that the VGA port wants to be the primary output over the LCD panel. I
>>> noticed in my dmesg output a line that says:
>>>
>>> [ 14.817404] [Firmware Bug]: Duplicate ACPI video bus devices for the
>>> same VGA controller, please try module parameter
>>> "video.allow_duplicates=1"if the current driver doesn't work.
>>>
>>> I'm betting that using this setting will fix my problem. Where does it
>>> go??
>>>
>>> Thanks!
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>>
>>
>>
>>
>> --
>> --
>> James P. Kinney III
>>
>> As long as the general population is passive, apathetic, diverted to
>> consumerism or hatred of the vulnerable, then the powerful can do as they
>> please, and those who survive will be left to contemplate the outcome.
>> - 2011 Noam Chomsky
>>
>> http://heretothereideas.blogspot.com/
>>
>>
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