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[Bug 312756] Re: support graphics card hot switch

To: ubuntu-x-swat@xxxxxxxxxxxxxxxxxxx
From: Eric Burgess <ericdb@xxxxxxxxx>
Date: Mon, 11 Jan 2010 15:08:36 -0000
Reply-to: Bug 312756 <312756@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

My machine is the same as Dr_Funkenstein's, a Dell XPS 1340 with
integrated 9400G and "discrete" 210m.  I use the quotes because even
when the 210m is running, it directs its output through the 9400, which
has the only connection to the LCD panel.  Apparently the "HybridBoost"
sends some signal to activate the 210m which then runs its output
through the 9400.

There are no relevant settings in the BIOS at all, and the 210m is
entirely dormant in Linux.  While hot-switching would be ideal, just
being able to choose at boot- or X-start-time whether to activate the
210m would be a tremendous improvement.  Dr_Funkenstein has posted his
DSDT file; is there any other information on this particular
configuration that could be of use?  Nvidia, unfortunately, does not
seem inclined to provide HybridBoost support in their Linux drivers.

-- 
support graphics card hot switch
https://bugs.launchpad.net/bugs/312756
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