Comment 270 for bug 312756

No Name,
latest iasl works better

2010/9/22 No Name <email address hidden>

> HP Pavilion dv7 Notebook PC
>
> sudo dmidecode -s system-product-name
> HP Pavilion dv7 Notebook PC
>
> sudo dmidecode -s system-version
> 049E100000243020000020000
>
> lspci -vnnn | perl -lne 'print if /^\d+\:.+(\[\S+\:\S+\])/' | grep VGA
> 00:02.0 VGA compatible controller [0300]: Intel Corporation Core Processor
> Integrated Graphics Controller [8086:0046] (rev 02)
> 01:00.0 VGA compatible controller [0300]: ATI Technologies Inc Redwood
> [Radeon HD 5600 Series] [1002:68c1]
>
> iasl -d DSDT.dat
>
> Intel ACPI Component Architecture
> AML Disassembler version 20090521 [Jun 30 2009]
> Copyright (C) 2000 - 2009 Intel Corporation
> Supports ACPI Specification Revision 3.0a
>
> Loading Acpi table from file DSDT.dat
> Acpi table [DSDT] successfully installed and loaded
> Pass 1 parse of [DSDT]
> Pass 2 parse of [DSDT]
> Parsing Deferred Opcodes (Methods/Buffers/Packages/Regions)
>
> ...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
> Parsing completed
>
> Found 8 external control methods, reparsing with new information
> Segmentation fault
>
>
> ** Attachment added: "HP Pavilion dv7 Notebook PC"
>
> https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/312756/+attachment/1620120/+files/DSDT.dat
>
> --
> support graphics card hot switch
> https://bugs.launchpad.net/bugs/312756
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in X.Org X server: New
> Status in “xorg” package in Ubuntu: Invalid
> Status in “xorg-server” package in Ubuntu: Triaged
>
> Bug description:
> http://forum.notebookreview.com/showthread.php?t=258304
>
> Hybrids with the Ability to turn off the 3d chip:
>
> AMD/ATI calls it PowerXpress and Nvidia HybridPower. It uses 2 graphics
> cards, one energy efficient with little 3d power and the other for gaming
> (fast and uses more/a lot of power), the user can choose which chip to use.
> This is not a new concept. Sony has build in 2 graphics chips into some of
> their laptops for years. In the past a reboot was required to switch between
> the chips. With the new generation it is possible to change between chips on
> the fly, the screen will flicker but no need to reboot. At least in Windows
> Vista (XP, Linux not supported) the user can switch freely between the chips
> or set up a profile to do so automatically (eg when on battery use low power
> chip and when plugged in use the more powerful chip).
>
> The graphic card hybrid not only works with two Nvidia or AMD cards but the
> low power Intel graphics solutions (mostly shard memory) can also be
> combined with 3d chips from AMD or Nvidia. This solution is ideal for users
> who want maximum battery life and be able to play current games. The most
> likely combination is Intel shard memory graphics card for battery life and
> some low to mid level 3d chip. This will not give great 3d performance but
> enable you to play some games.
>
> Limitations are the drivers. Special drivers are needed depending on which
> graphic chips are combined in the hybrid. This will most likely make you
> depended on the Notebook manufactures driver support. It is uncertain if 3rd
> party drivers (such as laptopvideo2go) will be usable.
>
> The following notebooks have Nvidia hybrid graphics (as seen on the link
> below):
> http://www.nvidia.com/object/io_1221136906708.html
> - Sony VAIO Z (Nvidia GeForce 9300M GS & Intel GMA 4500MHD)
> - Fujitsu Siemens Amilo XI 3650 (Nvidia GeForce 9600M GT & Intel GMA
> 4500MHD)
> - BenQ Joybook S42 (Nvidia GeForce 9600M GT & Intel GMA 4500MHD)
>
> On the NVidia side, we reported this issue in the nvnews forum:
> http://www.nvnews.net/vbulletin/showthread.php?p=1916754
>
> On the AMD/ATI side, we got words from Alex Deucher that he will liaise
> with AMD for docs in time:
> > We can definitely look into it, the problem is we already have a
> > backlog of stuff with higher priority (finishing 3D, newer power
> > management bits, investigating IDCT/UVD, etc.) to work through at the
> > moment, so I cannot say when we'd get to hybrid graphics. The other
> > problem is that since many of these hybrid solutions are multi-vendor,
> > we may not have the rights release certain IP. Even if would could
> > release some information, as has been stated previously, the driver
> > stack needs significant work to support something like this.
>
> On the Sony Vaio Z series, right now both cards are visible under Linux,
> but there is no way to hot-switching-off (if that is a word...) the Nvidia
> card. There are currently ~45 users of Sony Vaio Z series using Linux that
> would like this feature to be implemented. See:
>
> https://launchpad.net/~sony-vaio-z-series
>
> Also, see:
>
> http://forum.notebookreview.com/showthread.php?t=325616&page=1
> http://forum.notebookreview.com/showthread.php?t=325616&page=2
> http://forum.notebookreview.com/showthread.php?t=325616&page=3
> http://forum.notebookreview.com/showthread.php?t=325616&page=4
> http://forum.notebookreview.com/showthread.php?t=325616&page=5
>
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>