Bug#700121: kdm: second login on static server makes kwin freeze

[Shai Berger <shai@platonix.com>]

On Monday 11 February 2013 17:25:51 Maximiliano Curia wrote:
> Hi,
> 
> I'm using kdm in a number of machines and I could not reproduce the
> problem. However, I suspect the problem might be related to the composite
> manager startup (the second time) due to a video driver glitch.
> 

This could well be. Both machines I tested with earlier use NVidia cards (with 
proprietary driver); I just tested on this machine (intel card) and the 
problem was not reproduced.

> Can you please provide the hardware info of the video card you are using?
>

NVidia, updated binary drivers; I will be able to provide more accurate info 
(lspci etc) when I get home later today.
 
> Can you test the problem using Xrender as the composing type?
> (System Settings -> Workspace Appearance and Behavior -> Desktop Effects ->
> Advanced -> Compositing type)
> 

Ditto.

> Also, the steps to reproduce the problem are somewhat eclectic, please,
> could you provide a series of steps to reproduce the problem in a "clean"
> machine.
> 
Oh, the steps were very simple:

0. Assuming default KDM setup, once machine boots up, 
1. Log in. 
2. Log out. 
3. Log in again (same user or a different user). 
The X Session freezes with KWin at 100% CPU.

Thanks for your quick reply,

Shai.