[Bug 28422] X freese in many cases

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=28422

--- Comment #42 from Martin Stolpe <martinstolpe at gmail.com> 2010-06-09 08:19:07 PDT ---

(In reply to comment #41)
> > If this still doesn't enable KMS you can try the following
> 
> I have absolutely no clue why is KMS required, and how to check if it's loaded.
> I installed sys-kernel/xen-sources-2.6.34 (from the URL given in quoted bug):
> it installs 72 patches ... the first of which is a fbcon patch ! 
> 
To quote Alex: "Support for multi-card was broken in the xserver after 1.4.x
due to the pci rework.  If you want to use multi-card on newer systems, you
need kms." So I don't understand why you wrote that you have no clue why KMS is
required.

> You tell me to build a kernel, but not what I should do with it. I know a dozen
> of different ways to start Xorg ... In this bug, I do what you ask, not what
> you think. In comment 40, you do not ask me anything.

So if I understood you correctly you now have a 2.6.34 kernel with Xen patches
installed?
Check the following: Go to the kernel source directory and start "make
xconfig". Make sure that you have set "Enable modesetting on radeon by default"
in "Direct Rendering Manager". "ATI Radeon (DRM Radeon)" should be compiled as
a module.

Did you add "radeon" and "fbcon" to your autoload config?
What is your grub entry for the new kernel?
Have you installed the ucode firmware?
Does the new kernel boot correctly?
Start X without a xorg.conf.
Output of lsmod could probably also be useful.

If KMS is enabled you should have the following line in your Xorg.0.log: [KMS]
Kernel modesetting enabled.

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