Comment 271 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
>>
>> To unsubscribe from this bug, go to:
>> https://bugs.launchpad.net/xorg-server/+bug/312756/+subscribe
>>
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