i915 dual head woes

Richard Lynch ceo at l-i-e.com
Sun Apr 27 18:01:46 PDT 2008

On Sat, April 26, 2008 7:00 pm, Jesse Barnes wrote:
> On Friday, April 25, 2008 7:31 pm Richard Lynch wrote:
>> Gear:
>> Sony VGN TXN 17P laptop
>> HP L1940T external LCD/CRT
>> Back story:
>> http://www.phpbootcamp.com/articles/vgn_txn17p.htm
>> (rather long, I'm afraid...)
>> So I finally managed to get the latest kernel (for gentoo at least)
>> and latest xorg emerged and the i915 driver finally installed...
> I assume you have the latest Intel X driver too?

I think so?...

I tried to follow these directions:

I ran into a snag and had to ALSO install dri2proto.

It seems to all work.

lsmod lists i915 (and drm used by it)

I have a nifty install.sh script in a dripkg which complains that I
don't have the latest kernel installed -- but since I do, it's hard to
do much with that...

>> The only "weird" thing that leaps out at me is that both displays
>> try
>> to use pipe B, and neither one seems willing to use pipe B.  Is that
>> normal?...
>> Can anybody who actually understands this stuff look at a .conf and
>> .log and give me some idea what to try next?
>> http://l-i-e.com/xorg/
> You have an old style config file.  With the new driver, you'll need
> to update
> it to use randr style monitor configuration.  See
> http://www.intellinuxgraphics.org/dualhead.html and the man page for
> details.

Okay, I've used a conf file much more like that, and I still get
nothing on the external monitor...

xrandr never seems to recognize the external monitor.

Log and conf files (labeled with intellinuxgraphics in their names)
are here:


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