[xf86-video-intel] Need help solving issue with intel driver & DDC monitor detection

[Jerone Young]

See below...

On Jan 14, 2008 12:59 AM, Hong Liu <hong.liu at intel.com> wrote:
>
> On Mon, 2008-01-14 at 00:06 -0600, Jerone Young wrote:
> > When it works correctly xrandr reports (using VGA connected on startup):
> > ===========================================================
> > jerone at laptop:~$ xrandr  --prop
> > Screen 0: minimum 320 x 200, current 1920 x 1200, maximum 1920 x 1920
> > VGA connected 1920x1200+0+0 (normal left inverted right x axis y axis)
> > 518mm x 324mm
> >       EDID_DATA:
> >               00ffffffffffff004c2dd9003432424e
> >               110f01036c3420a02aee95a3544c9926
> >               0f5054bfef80a9408180714f01010101
> >               010101010101283c80a070b023403020
> >               360006442100001a000000fd00374b1e
> >               5011000a202020202020000000fc0053
> >               796e634d61737465720a2020000000ff
> >               0048344b593430303634390a2020002d
> >    1920x1200      60.0*+
> >    1600x1200      59.9
> >    1280x1024      75.0     59.9
> >    1152x864       75.0     74.8
> >    1024x768       75.1     70.1     60.0
> >    832x624        74.6
> >    800x600        72.2     75.0     60.3     56.2
> >    640x480        75.0     72.8     66.7     60.0
> >    720x400        70.1
> > LVDS connected 1440x900+0+0 (normal left inverted right x axis y axis)
> > 303mm x 190mm
> >       EDID_DATA:
> >               00ffffffffffff0030ae334000000000
> >               00110103801e1378eaae109658538c28
> >               24505421080001010101010101010101
> >               0101010101013226a04051841a303020
> >               36002fbe10000019d51fa04051841a30
> >               302036002fbe100000190000000f0090
> >               0a32900a28140100320cf800000000fe
> >               004c503134315750312d544c42370021
> >       BACKLIGHT_CONTROL: kernel
> >               supported: native       legacy       combination  kernel
> >       BACKLIGHT: 80 (0x00000050) range:  (0,100)
> >    1440x900       60.0*+   50.0
> >    1280x800       60.0
> >    1280x768       60.0
> >    1024x768       60.0
> >    800x600        60.3
> >    640x480        60.0     59.9
> > TMDS-1 disconnected (normal left inverted right x axis y axis)
> >
> >
> >
> > When is NOT working correctly xrandr reports (using VGA hotplugged):
> > =========================================================
> > jerone at laptop:~$ xrandr --prop
> > Screen 0: minimum 320 x 200, current 1440 x 900, maximum 1440 x 1440
> > VGA connected (normal left inverted right x axis y axis)
> >       EDID_DATA:
> >               00ffffffffffff004c2dd9003432424e
> >               110f01036c3420a02aee95a3544c9926
> >               0f5054bfef80a9408180714f01010101
> >               010101010101283c80a070b023403020
> >               360006442100001a000000fd00374b1e
> >               5011000a202020202020000000fc0053
> >               796e634d61737465720a2020000000ff
> >               0048344b593430303634390a2020002d
> >    1280x1024      75.0     59.9
> >    1152x864       75.0     74.8
> >    1024x768       75.1     70.1     60.0
> >    832x624        74.6
> >    800x600        72.2     75.0     60.3     56.2
> >    640x480        75.0     72.8     66.7     60.0
> >    720x400        70.1
> > LVDS connected 1440x900+0+0 (normal left inverted right x axis y axis)
> > 303mm x 190mm
> >       EDID_DATA:
> >               00ffffffffffff0030ae334000000000
> >               00110103801e1378eaae109658538c28
> >               24505421080001010101010101010101
> >               0101010101013226a04051841a303020
> >               36002fbe10000019d51fa04051841a30
> >               302036002fbe100000190000000f0090
> >               0a32900a28140100320cf800000000fe
> >               004c503134315750312d544c42370021
> >       BACKLIGHT_CONTROL: kernel
> >               supported: native       legacy       combination  kernel
> >       BACKLIGHT: 80 (0x00000050) range:  (0,100)
> >    1440x900       60.0*+   50.0
> >    1280x800       60.0
> >    1280x768       60.0
> >    1024x768       60.0
> >    800x600        60.3
> >    640x480        60.0     59.9
> > TMDS-1 disconnected (normal left inverted right x axis y axis)
>
> For your VGA hotplug not working issue, it's actually not problem of the
> driver.
> You need to enlarge your virtual size in your xorg.conf. The default
> virtual size is the biggest resolution of your all outputs (picked at X
> server startup).
> So when hotplugging VGA monitor, the virtual size is 1440x1440, any
> resolutions bigger than this were filtered out by X server.

Ok that actually worked! Very odd behavior though. Shouldn't xrandr be
showing all the modes of the monitor regardless.. not just what fits
in the available virtual size (this causes confusion). But I just
upped the virtual size to "3360 1200" and when I hot plug via VGA it
now works.

>
> The DVI output issue seems like a bug, would you please open a bug in
> xorg bugzilla, attaching your xorg.conf and xorg log with modedebug
> turned on?

Yes I'll file a bug and get back to the list with more info in the
morning (my time) ;-)

>
> Thanks,
> Hong
>
>