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[George Nistorică <312756@xxxxxxxxxxxxxxxxxx>]

Hello,

for the following

Dell XPS L501X Core i5 NVidia 420M Optimus

disabling or switchin the NVidia GPU doesn't work.

the details are below
# uname -a
Linux linux-zjp1.site 2.6.37-41-vanilla #1 SMP 2011-01-22 00:41:44 +0100 x86_64 x86_64 x86_64 GNU/Linux

# dmidecode -s system-product-name && sudo dmidecode -s system-version
XPS L501X  
A06

# 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 18) (prog-if 00 [VGA controller])
02:00.0 VGA compatible controller [0300]: nVidia Corporation Device [10de:0df1] (rev a1) (prog-if 00 [VGA controller])

# ./test_off.sh 
Trying \_SB.PCI0.P0P1.VGA._OFF: failed
Trying \_SB.PCI0.P0P2.VGA._OFF: failed
Trying \_SB_.PCI0.OVGA.ATPX: failed
Trying \_SB_.PCI0.OVGA.XTPX: failed
Trying \_SB.PCI0.P0P3.PEGP._OFF: failed
Trying \_SB.PCI0.P0P2.PEGP._OFF: failed
Trying \_SB.PCI0.P0P1.PEGP._OFF: failed
Trying \_SB.PCI0.MXR0.MXM0._OFF: failed
Trying \_SB.PCI0.PEG1.GFX0._OFF: failed
Trying \_SB.PCI0.PEG1.GFX0.DOFF: failed
Trying \_SB.PCI0.XVR0.Z01I.DGOF: failed
Trying \_SB.PCI0.PEGR.GFX0._OFF: failed
Trying \_SB.PCI0.PEG.VID._OFF: failed
Trying \_SB.PCI0.P0P2.DGPU._OFF: failed
Trying \_SB.PCI0.P0P4.DGPU.DOFF: failed
Trying \_SB.PCI0.IXVE.IGPU.DGOF: failed
Trying \_SB.PCI0.RP00.VGA._PS3: failed
Trying \_SB.PCI0.RP00.VGA.P3MO: failed
Trying \_SB.PCI0.GFX0.DSM._T_0: failed
Trying \_SB.PCI0.LPC.EC.PUBS._OFF: failed
Trying \_SB.PCI0.P0P2.NVID._OFF: failed

# acpidump > acpidump.txt && acpixtract acpidump.txt && iasl -d DSDT.dat && ls -l DSDT.dsl
Wrong checksum for DSDT!
Wrong checksum for SLIC
Wrong checksum for SSDT
Wrong checksum for SSDT
Wrong checksum for DSDT!
Wrong checksum for SLIC!
Wrong checksum for SSDT!
Wrong checksum for SSDT!
Acpi table [DSDT] -   41571 bytes written to DSDT.dat
Acpi table [SSDT] -    2408 bytes written to SSDT1.dat
Acpi table [SSDT] -    2545 bytes written to SSDT2.dat

Intel ACPI Component Architecture
AML Disassembler version 20100304 [Jul  1 2010]
Copyright (c) 2000 - 2010 Intel Corporation
Supports ACPI Specification Revision 4.0

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 2 external control methods, reparsing with new information
Pass 1 parse of [DSDT]
Pass 2 parse of [DSDT]
Parsing Deferred Opcodes (Methods/Buffers/Packages/Regions)
Parsing completed
Disassembly completed, written to "DSDT.dsl"

if there is any other way I can help, please let me know

** Attachment added: "DSDT.dsl"
   https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/312756/+attachment/1803907/+files/DSDT.dsl

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https://bugs.launchpad.net/bugs/312756

Title:
  MASTER: support graphics card hot switch