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Old 02-03-12, 05:40 PM   #49
Divided
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Default Re: GT 555M with PCI ID 0x0DEB

Quote:
Originally Posted by Lekensteyn View Post
NVIDIA has requested Lenovo to fix their BIOS. Neither nouveau nor nvidia are going to fix it in the drivers as it's not a driver bug.

The detection code does not properly find the correct ACPI handle, this is a result of Lenovo's weird code. This is not incorrect according to the ACPI spec either. The bug can be tracked on https://bugzilla.kernel.org/show_bug.cgi?id=42696
What I don't quite understand is that if the ACPI handle doesn't correctly match what it is expected to be, why do the Nvidia drivers work with Windows? The Windows Nvidia driver seems to have some way to understand the firmware, so could we just wrap whatever Windows does into Linux? Perhaps some kind of hack?

Because there was a time where the Windows Nvidia driver had the same problem...so I wonder how that got fixed? It was on Nvidia's end, yes?
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Old 02-04-12, 03:34 AM   #50
Lekensteyn
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Default Re: GT 555M with PCI ID 0x0DEB

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Originally Posted by Divided View Post
What I don't quite understand is that if the ACPI handle doesn't correctly match what it is expected to be, why do the Nvidia drivers work with Windows? The Windows Nvidia driver seems to have some way to understand the firmware, so could we just wrap whatever Windows does into Linux? Perhaps some kind of hack?

Because there was a time where the Windows Nvidia driver had the same problem...so I wonder how that got fixed? It was on Nvidia's end, yes?
I guess that was an issue with the driver not recognizing the card type at all which is not related to the wrongly detected ACPI handle.

A hacky workaround is available. https://twitter.com/#!/lekensteyn/st...52136505815040 (for those who cannot use Twitter, it refers to https://github.com/Bumblebee-Project...omment-3797568)
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Old 02-04-12, 08:32 AM   #51
presianbg
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Default Re: GT 555M with PCI ID 0x0DEB

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Originally Posted by Lekensteyn View Post
I guess that was an issue with the driver not recognizing the card type at all which is not related to the wrongly detected ACPI handle.

A hacky workaround is available. https://twitter.com/#!/lekensteyn/st...52136505815040 (for those who cannot use Twitter, it refers to https://github.com/Bumblebee-Project...omment-3797568)
Hi,

I didn't know about this hack around. Can you tell me from which repos to install Bumblebee and which nvidia drivers to install ?! And if i'm right the steps to get it work are :

1. Installing Bumblebee 3.0 (3.0-1~oneiricppa2)
2. Installing Nvidia Drivers
3. Doing this :
$ git clone git://github.com/Bumblebee-Project/bbswitch.git -b hack-lenovo
$ cd bbswitch
$ mkdir /usr/src/acpi-handle-hack-0.0.1
# cp Makefile acpi-handle-hack.c /usr/src/acpi-handle-hack-0.0.1
# cp dkms/acpi-handle-hack.conf /usr/src/acpi-handle-hack-0.0.1/dkms.conf
# dkms add acpi-handle-hack/0.0.1
# dkms build acpi-handle-hack/0.0.1
# dkms install acpi-handle-hack/0.0.1

Pls , tell me if i'm wrong and how to do it step by step , cuz i'm kinda noob in this


Best Regards ,

Pressko
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Old 02-05-12, 03:55 AM   #52
Lekensteyn
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Default Re: GT 555M with PCI ID 0x0DEB

Quote:
Originally Posted by presianbg View Post
Hi,

I didn't know about this hack around. Can you tell me from which repos to install Bumblebee and which nvidia drivers to install ?! And if i'm right the steps to get it work are :

1. Installing Bumblebee 3.0 (3.0-1~oneiricppa2)
2. Installing Nvidia Drivers
3. Doing this :
$ git clone git://github.com/Bumblebee-Project/bbswitch.git -b hack-lenovo
$ cd bbswitch
$ mkdir /usr/src/acpi-handle-hack-0.0.1
# cp Makefile acpi-handle-hack.c /usr/src/acpi-handle-hack-0.0.1
# cp dkms/acpi-handle-hack.conf /usr/src/acpi-handle-hack-0.0.1/dkms.conf
# dkms add acpi-handle-hack/0.0.1
# dkms build acpi-handle-hack/0.0.1
# dkms install acpi-handle-hack/0.0.1

Pls , tell me if i'm wrong and how to do it step by step , cuz i'm kinda noob in this


Best Regards ,

Pressko
Start with installing the hack first without installing any drivers. Commands prefixed with `$` should be executed as is, so `$ cd bbswitch` is just `cd bbswitch`. Commands prefixed with `#` should be executed as root, i.e. replace `#` by `sudo`. After installing the hack, proceed with the regular installation instructions at http://askubuntu.com/a/36936/6969
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Old 02-05-12, 08:42 AM   #53
presianbg
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Default Re: GT 555M with PCI ID 0x0DEB

Lekensteyn, 10x a lot man !! It's working i don't know if there are any bugs or something else but it's working like a charm .
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Old 02-09-12, 05:55 AM   #54
presianbg
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Default Re: GT 555M with PCI ID 0x0DEB

Any official statements from Nvidia ?
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Old 02-09-12, 10:46 AM   #55
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Default Re: GT 555M with PCI ID 0x0DEB

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Originally Posted by presianbg View Post
Any official statements from Nvidia ?
Yeah.. it's interesting for me as well.
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Old 02-13-12, 05:15 AM   #56
presianbg
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Default Re: GT 555M with PCI ID 0x0DEB

bump...
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Old 02-15-12, 12:49 AM   #57
presianbg
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Default Re: GT 555M with PCI ID 0x0DEB

There are new verison of the drivers , but nothing changed for us .... Can't belive that lenovo and nvidia are not working gather.
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Old 02-15-12, 12:46 PM   #58
danix
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Default Re: GT 555M with PCI ID 0x0DEB

This can't be fixed in the driver: an interaction problem between the System BIOS and the ACPI subsystem is preventing the driver from retrieving information it needs (the Video BIOS) in order to initialize the GPU.

The problem needs to be fixed in the BIOS, the kernel, or both. There's already a kernel bug open to track this, which Lekensteyn already referred to in this thread.
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Old 02-16-12, 02:37 AM   #59
Lekensteyn
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Default Re: GT 555M with PCI ID 0x0DEB

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Originally Posted by presianbg View Post
There are new verison of the drivers , but nothing changed for us .... Can't belive that lenovo and nvidia are not working gather.
It's not Nvidia' fault, but Lenovo who are doing weird things which are apparantly valid on Windows.
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