Comment 42 for bug 214105

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Bryce Harrington (bryce) wrote : Re: Freeze with ati driver during boot on 8.04

Walldorf2000, -ati now ships with "4" as the default value for AGPMode for most hardware, so it would be worth testing Intrepid with either the stock xorg.conf, or no xorg.conf, and check that it picks it up correctly and runs properly.

This AGP setting is a common issue across a LOT of -ati bugs. I've coded up a patch to allow us to quirk specific hardware to set the setting. So, if the defaults *don't* work for you in Intrepid, we can put in a quirk for your hardware. This will make the live cd "just work" for you (and hopefully others with your same hardware combo).

Possible values for AGPMode include 1, 2, 4, 8. You can see what it's currently set to by looking in /var/log/Xorg.0.log. It's worthwhile to test all four values even once you find one that works. If this takes care of it for you, we may be able to establish a quirk to set it for your hardware combo, if you can provide the following data:

  * AGPMode value(s) that work
  * Make/Model of laptop or motherboard
  * Output of lspci -vvnn
  * Is the system all factory hardware, or have any parts been replaced?
  * Is there an AGP Mode in the system BIOS?
    - If so, is it set to the factory default?

For more details on this, please see the "ATI AGP Mode Quirk" section at https://wiki.ubuntu.com/X/Quirks