hybrid-graphics-linux team mailing list archive

[Ranuka Perera <ranukap@xxxxxxxxx>]

The http://linuxenvy.blogspot.com/ 's information might be useful regarding
this matter.

Regards,
Ranuka Perera



On Fri, Feb 25, 2011 at 4:28 AM, <rosenfield.albert@xxxxxxxxx> wrote:

> I have run some tests on a HP Pavilion dm4-1160eo (BIOS revision F.17).
>
> It has two GPUs:
>  00:02.0 [8086:0046] VGA compatible controller: Intel Corporation Core
> Processor Integrated Graphics Controller (rev 02)
>  01:00.0 [1002:68e0] VGA compatible controller: ATI Technologies Inc
> Manhattan [Mobility Radeon HD 5000 Series]
>
> When the machine boots and the kernel switches mode right before
> /init, the screen just goes blank.
>
> Once in a while however, I manage to tweak things by
> plugging/unplugging the power cable etc, and actually get a picture.
> When that happened recently, I tried vga_switcheroo.
>
> The vga_switcheroo ON and OFF doesn't seem to turn anything on and off
> on this laptop.
>
> The vga_switcheroo DIS and IGD doesn't seem to switch outputs on this
> laptop.
>
> The only thing vga_switcheroo seems to do (correctly?) on this laptop
> is display the power and connected status of the two GPUs.
>
> Next, I wanted to make it easy to change graphics adapter during boot,
> before the prompt that asks you for a password to decrypt the root
> device.  So I made a initramfs script for use with Ubuntu to launch
> vga_switcheroo.  Attached as "hybrid_boot_options", instructions
> uploaded at https://help.ubuntu.com/community/HybridGraphics.
>
> Still no definitive success, so I tried to make acpi_call work.  It
> was a bit difficult because of lacking instructions, so after
> succeeding I ended up creating a DKMS package for other users.
> Attached as "acpi_call-dkms_1.0-1ubuntu1.1_all.deb".  Just run "sudo
> dpkg -i acpi_call-dkms*" and then "sudo modprobe acpi_call" and you're
> good to go.  The test script ends up in
> /usr/src/acpi_call-1.0/test_off.sh.
>
> (Using the DKMS package, it is possible to get the ACPI call feature
> into initramfs and run it on boot, however I didn't create the hook
> script and loader script in /etc/initramfs-tools necessary to do this.
>  There's some nice templates in /usr/share/initramfs-tools that shows
> how to do this, however.)
>
> I've also attached DSDT.dsl generated as per instructions on some
> blog.  (I did not create a Debian package to automate this step.)
>
> The output of test_off.sh for this laptop is:
>  \_SB.PCI0.P0P2.PEGP._OFF: works!
>
> The rest of the output is attached for your reading pleasure.
>
> I hope my laptop will be supported soon?
>
> I am not sure why it shows up a blank screen on boot or what to do
> next, but I am open to suggestions.
>
> _______________________________________________
> Mailing list: https://launchpad.net/~hybrid-graphics-linux
> Post to     : hybrid-graphics-linux@xxxxxxxxxxxxxxxxxxx
> Unsubscribe : https://launchpad.net/~hybrid-graphics-linux
> More help   : https://help.launchpad.net/ListHelp
>
>