hybrid-graphics-linux team mailing list archive

[Exaos Lee <exaos.lee@xxxxxxxxx>]

I failed to try discrete ATI card before. I will try your patch if I'm free.
My laptop: Dell New Inspiron 14R
OS: Ubuntu Linux 11.04 amd64
CPU: Core i7 2620M
Graphical: ATI Radeon 6630M

On Tue, May 31, 2011 at 15:08, Medvedchikov Alexey
<stein.burzum@xxxxxxxxx> wrote:
> Hello.
>
> Sorry for english and PCI\ACPI knowledge :)
>
> I have Acer TimelineX 3820TG with switchable graphics: Core i5 + ATI
> HD5650 with Gentoo Linux installed on it. Everything works fine,
> including powering off discreete card by vga_switcheroo or acpi_call.
> I want to use intel+fglrx, not intel+radeon. But can't reenable
> discrete ATI card without reboot. I tried: with acpi_call 'echo
> "\_SB.PCI0.P0P2.PEGP._OFF" > /proc/acpi/call' then 'echo
> "\_SB.PCI0.P0P2.PEGP._ON" > /proc/acpi/call' takes me to blank screen.
> With vgaswitcheroo I can reenable discreete card, but can't rmmod
> radeon, cause it's in use, obviously radeon and fglrx conflicts.
>
> Then I modified vgaswitcheroo routines not to powering off previous active card:
>
> --- /usr/src/linux/drivers/gpu/vga/vga_switcheroo.c     2011-05-31
> 05:38:05.809999874 +0700
> +++ /usr/src/linux/drivers/gpu/vga/vga_switcheroo.c.new 2011-05-31
> 14:00:21.103139923 +0700
> @@ -273,8 +273,8 @@
>        if (new_client->reprobe)
>                new_client->reprobe(new_client->pdev);
>
> -       if (active->pwr_state == VGA_SWITCHEROO_ON)
> -               vga_switchoff(active);
> +/*     if (active->pwr_state == VGA_SWITCHEROO_ON)
> +               vga_switchoff(active); */
>
>        new_client->active = true;
>        return 0;
>
> now I can reenable ATI card once, switch to integrated and remove
> radeon module :) but only once, then i have oops:
>
> ### bash ###
> echo "\_SB.PCI0.P0P2.PEGP._OFF" > /proc/acpi/call
> # on integrated
>
> modprobe radeon
> echo DDIS > /sys/kernel/debug/vgaswitcheroo/switch
> echo DIGD > /sys/kernel/debug/vgaswitcheroo/switch
> rmmod radeon                       # HERE on second iteration kernel make oops
> modprobe fglrx
>
> # Yay, discreete again
>
> ### end bash ###
>
> Thank you!
>
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