hybrid-graphics-linux team mailing list archive

[odjosc <odjosc@xxxxxxx>]

Hi,

I just have the same laptop and here are some additional notices : 

When I switch off the Intel card,
- needed power drops from ~12000mW to ~8000mW (good ;-))
- I get a bunch of errors in syslog with messages like this : 
	hda-intel: spurious response 0x0:0x0, last cmd=0x0f0000
- After one suspend/resume cycle, the PC becomes more or less stable

Olivier.

Le samedi 5 février 2011, lynton reed a écrit :
> Hi, just posting my info as a new member,
> 
> It seems to me that hybrid graphic card support is still a long way off,
> but I can offer to do some testing (with a few pointers).
> 
> As an interim measure I would like to find a way to load the nvidia drivers
> without disabling the INTEL gpu by setting the BIOS sata compatible mode
> which seriously degrades machine disk performance, although the nvidia card

> seems to work fine in this state.
> 
> I just want to use nvidia and am not too concerned with battery life but
> Xorg cannot correctly detect the card when the intel card is also active
> ie when lspci is showing both cards.
> 
> >From my readings it seems that possible interim solutions might be
> 
> 1) ASUS update BIOS to supply ability to disable one of the intel or nvidia
> .
> -- unlikely as ASUS dont support linux, although this would seem a sensible
> BIOS feature.
> without this users are restricted to an OS that can handle hybrid cards
> which i think leaves you a choice of only
>  windows 7. I wonder if this has anything to do with vendor reluctance.
> After all surely its to their advantage to make
> these hybrid card machines work on as many os's as possible, even if it
> involves a reboot to switch them.
> 
> 2) Xorg to support hybrid cards (or at least detect them)
> -- this looks like it will never happen as it would involve a core
> architectural change.
> 
> Here are my test results
> 
> lynton@mars:/sys/kernel/debug/acpi$ sudo dmidecode -s system-product-name
> [sudo] password for lynton:
> UL30VT
> lynton@mars:/sys/kernel/debug/acpi$ sudo dmidecode -s system-version
> 1.0
> lynton@mars:/sys/kernel/debug/acpi$ lspci -vnnn | perl -lne 'print if
> /^\d+\:.+(\[\S+\:\S+\])/' | grep VGA
> 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series
> Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00
> [VGA controller])
> 01:00.0 VGA compatible controller [0300]: nVidia Corporation GT218 [GeForce
> G210M] [10de:0a74] (rev a2) (prog-if 00 [VGA controller])
> 
> When testing acpi_call it reports success but both cards are  still  shown
> in lspci,
> note that the G210M rev changes from a2 to ff after this and that I have
> also found that after loading this module I cannot shut down the machine
> via KDE gui,  ie i have to shudown -h now from a terminal.
> 
> 
> root@mars:/home/lynton/Downloads/acpi_call# ./test_off.sh
> Trying \_SB.PCI0.P0P1.VGA._OFF: works!
> root@mars:/home/lynton/Downloads/acpi_call# lspci | grep -i vga
> 00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series
> Chipset Integrated Graphics Controller (rev 07)
> 01:00.0 VGA compatible controller: nVidia Corporation GT218 [GeForce G210M]
> (rev ff)
> 
> +1 for the cause. thanks to all contributing to this
> 
> lynton