Kernel Bug Tracker – Bug 54191
(FIXED) Unable to boot without disabling KMS: ATI Mobility Radeon X1300
Last modified: 2013-11-12 13:49:41 UTC
Since the 3.5 series of the Linux kernel, and in every Linux kernel version since, I am unable to boot into my laptop without disabling KMS.
Comp Model: HP Compaq nc6400
CPU: Intel Core Duo T2500
RAM: 4GB DDR2 RAM
GPU: ATI Mobility Radeon X1300
Tested many Linux kernel versions before 3.5. and booting is completely possible and works without a hitch.
This happens in every distribution, regardless of what graphicall drivers I have installed. It even occurs when I don't have *any* drivers installed at all.
Looks related to this bug, where some kernel bisecting has already been done.
Anyhow I have the exact same symptoms on a Compaq 6910p laptop with a mobility radeon x2300 video card.
Trying to boot with any kernel version starting from 3.5 and above results in a blank screen and lockup, unless nomodeset is specified.
Ubuntu 12.04 with kernel 3.2.0 works perfectly.
Related Fedora bug 845745: https://bugzilla.redhat.com/show_bug.cgi?id=845745
It appears, in the kernel, that Radeon UMS has been deprecated. Could this be related to the error?
(In reply to Waf Flez from comment #4)
> It appears, in the kernel, that Radeon UMS has been deprecated. Could this
> be related to the error?
Just booted into 3.10 after leaving this comp be for a while, the problem is fixed!
Booted with Ubuntu kernel 3.9.7, works fine with on my Compaq 6910p with Radeon mobility x2300.