[Intel-gfx] i915 KMS wrong resolution later on boot

[ykzhao]

On Fri, 2010-01-08 at 20:02 +0800, Peter Clifton wrote:
> On Fri, 2010-01-08 at 11:15 +0100, Carlos R. Mafra wrote:
> > I have a laptop with 1280x800 and an external monitor with
> > 1280x1024, and the end result after boot and entering X is
> > that I get both at the wrong resolution of 1024x768.
> > (after running xrandr I can fix the resolution)
> > 
> > The laptop has this card
> > 00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c)

Hi, Carlos
	Agree with what Peter said. Maybe this issue is related with the user
setting.

	Will you please add the boot option of "drm.debug=0x06" and attach the
output of dmesg?

	Will you please also add the debug option in /etc/X11/xorg.conf and
attach the output of Xorg.0.log?
        > option "modedebug" "true"

thanks.
	Yakui
> > 
> > and my kernel has
> > 
> > CONFIG_DRM_I915=y
> > CONFIG_DRM_I915_KMS=y
> > 
> > On 2.6.33-rc3+ (and previous kernels too) the KMS gets the
> > correct resolution in the beginning of the boot and later
> > sets it wrong. Grepping 'drm' from the dmesg shows me this:
> > 
> > [    1.988283] calling  drm_core_init+0x0/0x137 @ 1
> > [    1.988379] [drm] Initialized drm 1.1.0 20060810
> > [    1.988429] initcall drm_core_init+0x0/0x137 returned 0 after 95 usecs
> > [    1.995913] [drm] set up 7M of stolen space
> > [    2.022311] [drm] initialized overlay support
> > [    2.554262] [drm] TV-12: set mode NTSC 480i 0
> > [    2.792262] [drm] DAC-6: set mode 1280x1024 28
> > [    2.856261] [drm] LVDS-8: set mode 1280x800 2a
> > [    3.901189] fb0: inteldrmfb frame buffer device
> > [    3.903369] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
> > [    9.881037] [drm] DAC-6: set mode 1024x768 2c
> > [   10.272108] [drm] LVDS-8: set mode 1024x768 2d
> > [   31.845095] [drm] DAC-6: set mode  2b
> > 
> > and see how at ~2 secs the resolutions are correct and then at
> > ~10 secs (when X is starting) they are wrong. Why does this happen?
> > I am using OpenSUSE 11.2 so my userspace is new.
> > 
> > The whole dmesg is here:
> > http://www.aei.mpg.de/~crmafra/dmesg-drm.txt
> > 
> > (my kernel has one btrfs patch and a i915 patch to keep the
> > outputs disabled after s2ram, http://lkml.org/lkml/2009/12/31/13
> > but the problem happens regardless)
> 
> Could be that something in your Xorg userspace is calling xrandr to poke
> the monitors into a previously recorded configuration. I believe
> gnome-settings-daemon does this, for example.
> 
> You might try moving / deleting ~/.config/monitors.xml if it exists. It
> doesn't any more on my box, but I'm not sure why... perhaps the data
> moved somewhere else.
> 
> 
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