Ubuntu 8.04 unichrome patch and CX700M2 drivers

[agisman]

Hey Everyone,

I posted before about some of the problems getting the CX700M2 chipset working properly on Ubuntu 8.04. Even when the new stable drivers came out, I couldn't get it to enable rendering. The Xorg log says that drmopen failed and DRI is disabled.

Looking on the Via linux page, it seems that they have added "source code" for an item called unichrome-patch. In the patch readme file, there are some comments about the 2.6.24 kernel not supporting the Via chipset. Unfortunately, there isn't much documentation and what is available is written in broken English. I'm also not sure what the difference between the AGP and DRM patches is and which one to use. The output of 'uname -r' tells me my kernel is:

2.6.24-19-generic

Does anyone have the proper procedure for installing the drivers and/or patching the kernel to enable 3D and the stable drivers on Ubuntu 8.04? I have gotten as far as downloading the linux-source package as well as the 'patch' package. I un-tar'd the source package to a local directory then moved the patch file into the same folder. Using the recommended command: 'patch –p0 < via-agp.patch-2.6.24' causes the following error.

patch: **** Can't find file –p0 : No such file or directory

I'm unfamiliar with applying a diff file and patching the kernel and it would be nice to have some directions in clear English that tell me in which order to install the driver or patch the kernel etc. Thanks for any advice you can give!

Cheers,
Agisman

[earlycj5]

Originally Posted by agisman

patch: **** Can't find file –p0 : No such file or directory

It's

-p0

Not

–p0

There is a difference.

[agisman]

Thanks to earlycj5!

I had just copied the text out of the provided PDF and used that as the necessary code. Unfortunately, I couldn't tell the difference between the two characters that both looked like the minus sign.

After manually entering it and patching the kernel source with the AGP and DRM patches, I was able to enable rendering and get the card back up and working. Unfortunately, there is still no acceleration for video and processor usage is so high as to make it useless for video playback. I'll keep my eye on the VIA page and hope that they actually release fully functional drivers one day. It's disappointing for a major manufacturer not to fully support the open source community in a timely fashion.

Again, thanks for the advice!

[mewn]

Hi,

With my EX15000 it was easy :

- Go to VIA Linux Portal

On the left menu, choose "Ubuntu 8.04 LTS"
On the right menu, choose "CX700X/VX700"

Download the "stable" driver.

Uncompress it, run the installer.

Go to /usr/lib, as root chmod ugo+r *GL*

And voila, everything is working included 3d....