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[Bug 312756] Re: support graphics card hot switch

To: ubuntu-x-swat@xxxxxxxxxxxxxxxxxxx
From: Stefan Gustafsson <312756@xxxxxxxxxxxxxxxxxx>
Date: Mon, 26 Jul 2010 22:18:24 -0000
Reply-to: Bug 312756 <312756@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

Been looking around my DSDT.dsl file and found that using \_SB.PCI0.PEGP.VGA._OFF probably turns off my discrete graphics card.
After I run echo '\_SB.PCI0.PEGP.VGA._OFF' > /proc/acpi/call the laptop runs abit cooler, and the lspci -v gives me 
01:00.0 VGA compatible controller: nVidia Corporation Device 0a69 (rev ff) (prog-if ff)
	!!! Unknown header type 7f

echo '\_SB.PCI0.PEGP.VGA._ON' > /proc/acpi/call the temperature increases almost instant. and lspci -v produces
01:00.0 VGA compatible controller: nVidia Corporation Device 0a69 (rev a2)
	Subsystem: Hewlett-Packard Company Device 142e
	Flags: bus master, fast devsel, latency 0, IRQ 11
	Memory at f0000000 (32-bit, non-prefetchable) [size=16M]
	Memory at c0000000 (64-bit, prefetchable) [size=256M]
	Memory at d0000000 (64-bit, prefetchable) [size=32M]
	I/O ports at 4000 [disabled] [size=128]
	Expansion ROM at f1080000 [disabled] [size=512K]
	Capabilities: <access denied>
	Kernel modules: nvidiafb, nouveau


I'am using an HP DM3-1130eo laptop. (see comment above)

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