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Bug#528551: xserver-xorg-video-intel: hang on 915GM at startup (Thinkpad X41, KMS)



Hello Brice,

On Wed, May 13, 2009 at 06:38:52PM +0200, Brice Goglin wrote:
> Uwe Kleine-König wrote:
> > Package: xserver-xorg-video-intel
> > Version: 2:2.7.1-1
> > Severity: normal
> >
> > Hello,
> >
> > I enabled KMS using 
> >
> > 	# echo options i915 modeset=1 > /etc/modprobe.d/i915 
> > 	# reboot
> >
> > (This enables KMS, doesn't it?  The log file still reports that EXA is used!?)
> >   
> 
> KMS needs UXA, so I don't think you have KMS :)
I already feared that.  I tried 

	Option "AccelMethod" "UXA"

but (as I expected) that wasn't the problem.
How does the driver determine if KMS is available?

> And KMS needs i915 to be loaded from initramfs, so it may to be too
> early to read /etc/modprobe.d/i915
> 
> Does it change anything if you don't do the above ?
When I comment out the line in /etc/modprobe.d/i915, X starts normally.
And I have

	root@cassiopeia:~# cat /sys/module/i915/parameters/modeset 
	1

Both makes me think that /etc/modprobe.d/i915 is early enough, isn't it?
 
> Did Intel 2.7.0 work better ?
2.7.0, 2.7.1 and 2.7.99.1 all behave like that.  (That is, it works
without modeset=1, and fails with it.)

Best regards
Uwe

-- 
Pengutronix e.K.                              | Uwe Kleine-König            |
Industrial Linux Solutions                    | http://www.pengutronix.de/  |



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