Bug 54191 (TestingTe)

Summary: (FIXED) Unable to boot without disabling KMS: ATI Mobility Radeon X1300
Product: Drivers Reporter: Waf Flez (wafflezwillruletheworld)
Component: Video(Other)Assignee: drivers_video-other
Status: CLOSED CODE_FIX    
Severity: high CC: alan, gpratiqueav, keplicz, wafflezwillruletheworld
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 3.5.X - 3.9.3 (Fixed somewhere between 3.9.3 and 3.10) Subsystem:
Regression: No Bisected commit-id:

Description Waf Flez 2013-02-21 06:45:32 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.

Specs:

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.
Comment 1 Waf Flez 2013-02-21 21:17:37 UTC 
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.
Comment 2 gpratiqueav 2013-05-23 10:14:13 UTC 
Looks related to this bug, where some kernel bisecting has already been done. 

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1108457

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.
Comment 3 Piotr Keplicz 2013-05-23 11:08:38 UTC 
Related Fedora bug 845745: https://bugzilla.redhat.com/show_bug.cgi?id=845745
Comment 4 Waf Flez 2013-05-30 18:16:23 UTC 
It appears, in the kernel, that Radeon UMS has been deprecated. Could this be related to the error?
Comment 5 Waf Flez 2013-07-18 16:53:41 UTC 
(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!
Comment 6 gpratiqueav 2013-07-19 21:58:05 UTC 
Fixed indeed.

Booted with Ubuntu kernel 3.9.7, works fine with on my Compaq 6910p with Radeon mobility x2300.