Hello All,

I am trying to install Fedora 18 Beta x86+64 on my Dell XPS 15z, and would appreciate any help.

I am running this laptop on Ubuntu 12.04 LTS. This needs the following parameters on the 3.2.34 and later kernels to make the screen work:
acpi_backlight=vendor dell_laptop.backlight=0

On earlier kernels, it was solved with;
acpi=noirq

The default installation does of Fedora `8 not work, it displays a noveau error message and hangs.

nouveau 0000:01:00.0: 0xD581: i2c wr fail: -6

It went  beyond this just once (not sure how/why), and failed with the following;

no medium found on /dev/sr0
dracut: FAIL : Failed to mount block device of live image


Questions
---------
How do I get to edit the kernel parameters at install time, so that I can try the acpi switches ?
Do I need to give additional kernel parameters for dracut to read the DVD ?
Also, has any one successfully installed F18 on the Dell XPS 15z ?