Patching Vanilla Kernels with Fedora Patches

[Dominic Driver]

Hi All,

This is my first interaction with the list - hope this is the right place for this
question!

I recently installed Fedora 10 onto a development machine, and updated the kernel to
2.6.27.19-170.2.35.fc10.i686

During development of a C++ application for this machine, I was required to update and
rebuild the Intel Graphics Driver for XOrg in order to fix a problem with the version of
the driver I had. As I understand it, the latest version of the Intel Graphics Driver uses
libraries that have been moved into the kernel with version 2.6.28.

I therefore downloaded the source for Kernel 2.6.28.6, rebuilt the kernel and the graphics
driver, and fixed the issue with graphics I was having.

Unfortunately, I now have the situation when using the Vanilla 2.6.28.6 kernel results in
extremely slow burn speeds when writing to DVD-RW Drives. Where I previously had average
burn speeds of 10-11x, I now have average speeds of 2.2x. Since this is core functionality
for the C++ application I'm developing, it's something of a problem.

My question is:
Is it possible to apply the Fedora-specific patches for my Fedora Kernel (I have the
source code for 2.6.27.19-170.2.35.fc10.i686 ) to the Vanilla 2.6.28.6 kernel in order to
see if this fixes my drive speeds?

If so, how do i go about this?

Thanks for any help in advance,

-- 
Dominic Driver
Engineer
Paragon Electronic Design Limited

[Kevin Kofler]

FYI, there's a 2.6.29 kernel in updates-testing, you may want to try that
rather than building your own.

        Kevin Kofler

[Alan Cox]

> Driver for XOrg in order to fix a problem with the version of the
> driver I had. As I understand it, the latest version of the Intel Graphics Driver uses
> libraries that have been moved into the kernel with version 2.6.28. 
The kernel doesn't provide libraries for the X server or 3D. It could be
the newest X needs a newer version of the kernel 3D code.

>  Is it possible to apply the Fedora-specific patches for my Fedora
> Kernel (I have the source code for 2.6.27.19-170.2.35.fc10.i686 ) to the Vanilla 2.6.28.6
> kernel in order to see if this fixes my drive speeds? 
I don't believe it has any changes in that area.

The windows world way of trying to sort a problem by randomly swapping
versions of components until it runs is probably the wrong way to solve
this one.

If your CD drive is running slowly check your kernel configuration is
correct and you have the correct libata drivers enabled. Check the boot
messages (dmesg) and see what modes are being selected and which driver
used.

If that doesn't solve the problem then following up here further with
some actual detail (controller type, cd type, section of boot messages
etc) has a better chance of making progress.

Alan