[ale] Weird behavior with Intel 965 graphics

[Chris]

As a quick follow up to this, I installed a display manager (GDM) that
starts on boot in order
to get around this while I figure out the cause.

On Wed, Feb 15, 2012 at 5:08 PM, Jim Kinney <jim.kinney at gmail.com> wrote:
> Oh. so it should be a boot param. You can test it by stopping the grub and
> adding to the end of the kernel line. But as it doesn't work as expected, it
> may be the kernel doesn't load all the needed modules (or maybe not have
> them).
>
> On Wed, Feb 15, 2012 at 3:35 PM, Chris <behrnetworks at gmail.com> wrote:
>>
>> 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/
>> >>
>> >>
>> >> _______________________________________________
>> >> Ale mailing list
>> >> Ale at ale.org
>> >> http://mail.ale.org/mailman/listinfo/ale
>> >> See JOBS, ANNOUNCE and SCHOOLS lists at
>> >> http://mail.ale.org/mailman/listinfo
>> >>
>
>
>
>
> --
> --
> 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/
>