Loading i915 module panics my system after patching with Intel GPU patch 14.4 for stable/9

[Jose Garcia Juanino]

El sábado 28 de abril a las 00:22:44 CEST, Kevin Oberman escribió:
> On Fri, Apr 27, 2012 at 2:17 PM, Jose Garcia Juanino <jjuanino at gmail.com> wrote:
> > El viernes 27 de abril a las 22:25:48 CEST, Jose Garcia Juanino escribió:
> >>
> >> 2- startx with intel driver
> >> X session takes a lot of time until it appears (1 minute). From a ssh
> >> session, I see the Xorg process to consume the 100% of cpu time (kernel
> >> time, not user time). But once the screen is showed up, it looks fine.
> >> Fonts are well displayed and depth color is 24 (vesa only supports 8).
> >> After a few minutes, CPU time drops until 0%, and it is possible to use
> >> the computer. But if I try to move the mouse, again the cpu time
> >> increase until 100% for 1 minute, and the system is unresponsive. Only I
> >> can use the computer by mean of the keyboard after cpu consume drops
> >> again.
> >
> > I forget to say that it is not possible to switch between console and X
> > session by mean of CTRL+ALT+FN. For example, CTRL+ALT+F1 freeze the
> > current image (with a lower resolution, maybe 8 bits).  However,
> > keystrokes are correctly sent to the console, and it is possible to
> > execute any command (blindly). This anomaly does not happen with vesa
> > driver.
> 
> Switching to vtys is documented as being unimplemented when the
> intel-kms driver is used, so this is a well known problem. I'm hoping
> it happens rather soon as I really do miss them.

Thanks, I have read that issue in the FAQ of
http://wiki.freebsd.org/Intel_GPU.

> No idea about the mouse causing something to eat the CPU. Sorry.

Well, it seems that high cpu consume is not only related to mouse
movement, but to any event that requires a refresh of the screen.
Examples are: open a new terminal, drag a window, open a browser, etc.
What can I do in order to debug this issue? I am almost sure it is a
Xorg problem, not a driver one.

PD: I can do full access to this laptop to any interested developer who
want to address this issue. All I need is a private GPG signed message
from a valid developer
(http://www.freebsd.org/doc/handbook/pgpkeys-developers.html)

Regards
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