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

Jerone Young jerone at gmail.com
Mon Jan 14 07:16:20 PST 2008


Ok now that I have virtual size "3360 1200" DVI is behaving diffrent
behavior. Lets just say there is definitely a bug.

Issue
====
So it appears that DVI has some strange issues with my Samsung 243T.

Connected on X Startup
-----------------------------------
Over DVI the monitor will start with resolution 1280x1024. When I try
to send any xrandr commands they are ignored. Using "xrandr --output
TDMS-1 --right-of LVDS --auto". The monitor does nothing. I can't get
it to change the resolution either.

Hot plugged
-----------------
When I hot plug over DVI xrandr shows the correct values for my
monitor. But when I use the command "xrandr --output TDMS-1 --right-of
LVDS --auto" .. nothing comes to the screen!
I've seen others report this on the mailing list, but they where using
hdmi port.

Observations
===========
* In my last email I mentioned that I tested with a samsung
(1650x1050) monitor, well that was not with my Thinkpad T61 but
someone elses 15" Thinkpad T61 that had an LVDS of the 1650x1050.
* Could the problem be that if the DVI monitor has a higher resolution
then the LVDS then this is causing an issue (the data would seem to
show that). When I moved around the init code in i830_driver.c and
placed the dvi (svdo) init code above lvds init code it had worked on
startup.


Here is some xrandr data. I first give xrandr data from a working
machine (my Thinkpad T41p) , then show for the diffrent cases on
Thinkpad T61 with the x3100 over DVI.

xrandr output from DVI on WORKING Thinkpad T41p (which uses "ati" driver)
=======================================================
creen 0: minimum 320 x 200, current 3320 x 1200, maximum 3320 x 1200
VGA-0 disconnected (normal left inverted right)
DVI-0 connected 1920x1200+0+0 (normal left inverted right) 518mm x 324mm
   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 1400x1050+1920+0 (normal left inverted right) 0mm x 0mm
   1400x1050      50.0*+
   1280x800       60.0
   1280x768       60.0
   1024x768       60.0
   800x600        60.3
   640x480        59.9
S-video disconnected (normal left inverted right)


More xrandr output from DVI on WORKING Thinkpad T41p (which uses "ati" driver)
=======================================================
xrandr --verbose:

DVI-0 connected 1920x1200+0+0 (0x5e) normal (normal left inverted
right) 518mm x 324mm
        Identifier: 0x4d
        Timestamp:  1996587506
        Subpixel:   horizontal rgb
        Clones:
        CRTC:       1
        CRTCs:      0 1
        EDID_DATA:
                00ffffffffffff004c2df7003432424e
                110f0103803420a02aee95a3544c9926
                0f5054bfef80a9408180714f01010101
                010101010101283c80a070b023403020
                360006442100001a000000fd00374b1e
                5011000a202020202020000000fc0053
                796e634d61737465720a2020000000ff
                0048344b593430303634390a202000fb
                scaler: off
                tmds_pll: bios
  1920x1200 (0x5e)  154.0MHz -HSync +VSync
        h: width  1920 start 1968 end 2000 total 2080 skew    0 clock   74.0KHz
        v: height 1200 start 1203 end 1209 total 1235           clock   60.0Hz
  1600x1200 (0x5f)  161.0MHz -HSync +VSync
        h: width  1600 start 1712 end 1880 total 2160 skew    0 clock   74.5KHz
        v: height 1200 start 1203 end 1207 total 1245           clock   59.9Hz
  1280x1024 (0x60)  135.0MHz +HSync +VSync
        h: width  1280 start 1296 end 1440 total 1688 skew    0 clock   80.0KHz
        v: height 1024 start 1025 end 1028 total 1066           clock   75.0Hz
  1280x1024 (0x61)  109.0MHz -HSync +VSync
        h: width  1280 start 1368 end 1496 total 1712 skew    0 clock   63.7KHz
        v: height 1024 start 1027 end 1034 total 1063           clock   59.9Hz
  1152x864 (0x62)  108.0MHz +HSync +VSync
        h: width  1152 start 1216 end 1344 total 1600 skew    0 clock   67.5KHz
        v: height  864 start  865 end  868 total  900           clock   75.0Hz
  1152x864 (0x63)  104.0MHz -HSync +VSync
        h: width  1152 start 1224 end 1344 total 1536 skew    0 clock   67.7KHz
        v: height  864 start  867 end  871 total  905           clock   74.8Hz
  1024x768 (0x64)   78.8MHz +HSync +VSync
        h: width  1024 start 1040 end 1136 total 1312 skew    0 clock   60.1KHz
        v: height  768 start  769 end  772 total  800           clock   75.1Hz
  1024x768 (0x65)   75.0MHz -HSync -VSync
        h: width  1024 start 1048 end 1184 total 1328 skew    0 clock   56.5KHz
        v: height  768 start  771 end  777 total  806           clock   70.1Hz
  1024x768 (0x53)   65.0MHz -HSync -VSync
        h: width  1024 start 1048 end 1184 total 1344 skew    0 clock   48.4KHz
        v: height  768 start  771 end  777 total  806           clock   60.0Hz
  832x624 (0x66)   57.3MHz -HSync -VSync
        h: width   832 start  864 end  928 total 1152 skew    0 clock   49.7KHz
        v: height  624 start  625 end  628 total  667           clock   74.6Hz
  800x600 (0x67)   50.0MHz +HSync +VSync
        h: width   800 start  856 end  976 total 1040 skew    0 clock   48.1KHz
        v: height  600 start  637 end  643 total  666           clock   72.2Hz
  800x600 (0x68)   49.5MHz +HSync +VSync
        h: width   800 start  816 end  896 total 1056 skew    0 clock   46.9KHz
        v: height  600 start  601 end  604 total  625           clock   75.0Hz
  800x600 (0x54)   40.0MHz +HSync +VSync
        h: width   800 start  840 end  968 total 1056 skew    0 clock   37.9KHz
        v: height  600 start  601 end  605 total  628           clock   60.3Hz
  800x600 (0x69)   36.0MHz +HSync +VSync
        h: width   800 start  824 end  896 total 1024 skew    0 clock   35.2KHz
        v: height  600 start  601 end  603 total  625           clock   56.2Hz
  640x480 (0x6a)   31.5MHz -HSync -VSync
        h: width   640 start  656 end  720 total  840 skew    0 clock   37.5KHz
        v: height  480 start  481 end  484 total  500           clock   75.0Hz
  640x480 (0x6b)   31.5MHz -HSync -VSync
        h: width   640 start  664 end  704 total  832 skew    0 clock   37.9KHz
        v: height  480 start  489 end  491 total  520           clock   72.8Hz
  640x480 (0x6c)   30.2MHz -HSync -VSync
        h: width   640 start  704 end  768 total  864 skew    0 clock   35.0KHz
        v: height  480 start  483 end  486 total  525           clock   66.7Hz
  640x480 (0x6d)   25.2MHz -HSync -VSync
        h: width   640 start  656 end  752 total  800 skew    0 clock   31.5KHz
        v: height  480 start  490 end  492 total  525           clock   60.0Hz
  720x400 (0x6e)   28.3MHz -HSync +VSync
        h: width   720 start  738 end  846 total  900 skew    0 clock   31.5KHz
        v: height  400 start  412 end  414 total  449           clock   70.1Hz

xrandr output when DVI is connected on X startup
=========================================
jerone at laptop:~$ xrandr
Screen 0: minimum 320 x 200, current 1440 x 1024, maximum 3360 x 1200
VGA disconnected (normal left inverted right x axis y axis)
LVDS connected 1440x900+0+0 (normal left inverted right x axis y axis)
303mm x 190mm
   1440x900       60.0*+   50.0
   1280x800       60.0
   1280x768       60.0
   1024x768       60.0
   800x600        60.3
   640x480        60.0     59.9
TMDS-1 connected 1280x1024+0+0 (normal left inverted right x axis y
axis) 518mm x 324mm
   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

More xrandr output when DVI is connected on X startup
=============================================
xrandr --verbose
TMDS-1 connected 1280x1024+0+0 (0x68) normal (normal left inverted
right x axis y axis) 518mm x 324mm
	Identifier: 0x5d
	Timestamp:  1071792
	Subpixel:   horizontal rgb
	Clones:
	CRTC:       0
	CRTCs:      0 1
	EDID_DATA:
		00ffffffffffff004c2df7003432424e
		110f0103803420a02aee95a3544c9926
		0f5054bfef80a9408180714f01010101
		010101010101283c80a070b023403020
		360006442100001a000000fd00374b1e
		5011000a202020202020000000fc0053
		796e634d61737465720a2020000000ff
		0048344b593430303634390a202000fb
  1920x1200 (0x66)  154.0MHz +HSync -VSync
        h: width  1920 start 1968 end 2000 total 2080 skew    0 clock   74.0KHz
        v: height 1200 start 1203 end 1209 total 1235           clock   60.0Hz
  1600x1200 (0x67)  161.0MHz -HSync +VSync
        h: width  1600 start 1712 end 1880 total 2160 skew    0 clock   74.5KHz
        v: height 1200 start 1203 end 1207 total 1245           clock   59.9Hz
  1280x1024 (0x68)  135.0MHz +HSync +VSync
        h: width  1280 start 1296 end 1440 total 1688 skew    0 clock   80.0KHz
        v: height 1024 start 1025 end 1028 total 1066           clock   75.0Hz
  1280x1024 (0x69)  109.0MHz -HSync +VSync
        h: width  1280 start 1368 end 1496 total 1712 skew    0 clock   63.7KHz
        v: height 1024 start 1027 end 1034 total 1063           clock   59.9Hz
  1152x864 (0x6a)  108.0MHz +HSync +VSync
        h: width  1152 start 1216 end 1344 total 1600 skew    0 clock   67.5KHz
        v: height  864 start  865 end  868 total  900           clock   75.0Hz
  1152x864 (0x6b)  104.0MHz -HSync +VSync
        h: width  1152 start 1224 end 1344 total 1536 skew    0 clock   67.7KHz
        v: height  864 start  867 end  871 total  905           clock   74.8Hz
  1024x768 (0x6c)   78.8MHz +HSync +VSync
        h: width  1024 start 1040 end 1136 total 1312 skew    0 clock   60.1KHz
        v: height  768 start  769 end  772 total  800           clock   75.1Hz
  1024x768 (0x6d)   75.0MHz -HSync -VSync
        h: width  1024 start 1048 end 1184 total 1328 skew    0 clock   56.5KHz
        v: height  768 start  771 end  777 total  806           clock   70.1Hz
  1024x768 (0x62)   65.0MHz -HSync -VSync
        h: width  1024 start 1048 end 1184 total 1344 skew    0 clock   48.4KHz
        v: height  768 start  771 end  777 total  806           clock   60.0Hz
  832x624 (0x6e)   57.3MHz -HSync -VSync
        h: width   832 start  864 end  928 total 1152 skew    0 clock   49.7KHz
        v: height  624 start  625 end  628 total  667           clock   74.6Hz
  800x600 (0x6f)   50.0MHz +HSync +VSync
        h: width   800 start  856 end  976 total 1040 skew    0 clock   48.1KHz
        v: height  600 start  637 end  643 total  666           clock   72.2Hz
  800x600 (0x70)   49.5MHz +HSync +VSync
        h: width   800 start  816 end  896 total 1056 skew    0 clock   46.9KHz
        v: height  600 start  601 end  604 total  625           clock   75.0Hz
  800x600 (0x63)   40.0MHz +HSync +VSync
        h: width   800 start  840 end  968 total 1056 skew    0 clock   37.9KHz
        v: height  600 start  601 end  605 total  628           clock   60.3Hz
  800x600 (0x71)   36.0MHz +HSync +VSync
        h: width   800 start  824 end  896 total 1024 skew    0 clock   35.2KHz
        v: height  600 start  601 end  603 total  625           clock   56.2Hz
  640x480 (0x72)   31.5MHz -HSync -VSync
        h: width   640 start  656 end  720 total  840 skew    0 clock   37.5KHz
        v: height  480 start  481 end  484 total  500           clock   75.0Hz
  640x480 (0x73)   31.5MHz -HSync -VSync
        h: width   640 start  664 end  704 total  832 skew    0 clock   37.9KHz
        v: height  480 start  489 end  491 total  520           clock   72.8Hz
  640x480 (0x74)   30.2MHz -HSync -VSync
        h: width   640 start  704 end  768 total  864 skew    0 clock   35.0KHz
        v: height  480 start  483 end  486 total  525           clock   66.7Hz
  640x480 (0x64)   25.2MHz -HSync -VSync
        h: width   640 start  656 end  752 total  800 skew    0 clock   31.5KHz
        v: height  480 start  490 end  492 total  525           clock   60.0Hz
  720x400 (0x75)   28.3MHz -HSync +VSync
        h: width   720 start  738 end  846 total  900 skew    0 clock   31.5KHz
        v: height  400 start  412 end  414 total  449           clock   70.1Hz



xrandr output when DVI hotplugged (but does monitor is not getting a signal)
===============================================================
jerone at laptop:~$ xrandr
Screen 0: minimum 320 x 200, current 1440 x 900, maximum 3360 x 1200
VGA disconnected (normal left inverted right x axis y axis)
LVDS connected 1440x900+0+0 (normal left inverted right x axis y axis)
303mm x 190mm
   1440x900       60.0*+   50.0
   1280x800       60.0
   1280x768       60.0
   1024x768       60.0
   800x600        60.3
   640x480        60.0     59.9
TMDS-1 connected (normal left inverted right x axis y axis)
   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

More xrandr output when DVI hotplugged (but does monitor is not
getting a signal)
===============================================================
xrandr --verbose:

TMDS-1 connected (normal left inverted right x axis y axis)
	Identifier: 0x5d
	Timestamp:  222535
	Subpixel:   horizontal rgb
	Clones:
	CRTCs:      0 1
	EDID_DATA:
		00ffffffffffff004c2df7003432424e
		110f0103803420a02aee95a3544c9926
		0f5054bfef80a9408180714f01010101
		010101010101283c80a070b023403020
		360006442100001a000000fd00374b1e
		5011000a202020202020000000fc0053
		796e634d61737465720a2020000000ff
		0048344b593430303634390a202000fb
  1920x1200 (0x6f)  154.0MHz +HSync -VSync
        h: width  1920 start 1968 end 2000 total 2080 skew    0 clock   74.0KHz
        v: height 1200 start 1203 end 1209 total 1235           clock   60.0Hz
  1600x1200 (0x70)  161.0MHz -HSync +VSync
        h: width  1600 start 1712 end 1880 total 2160 skew    0 clock   74.5KHz
        v: height 1200 start 1203 end 1207 total 1245           clock   59.9Hz
  1280x1024 (0x71)  135.0MHz +HSync +VSync
        h: width  1280 start 1296 end 1440 total 1688 skew    0 clock   80.0KHz
        v: height 1024 start 1025 end 1028 total 1066           clock   75.0Hz
  1280x1024 (0x72)  109.0MHz -HSync +VSync
        h: width  1280 start 1368 end 1496 total 1712 skew    0 clock   63.7KHz
        v: height 1024 start 1027 end 1034 total 1063           clock   59.9Hz
  1152x864 (0x73)  108.0MHz +HSync +VSync
        h: width  1152 start 1216 end 1344 total 1600 skew    0 clock   67.5KHz
        v: height  864 start  865 end  868 total  900           clock   75.0Hz
  1152x864 (0x74)  104.0MHz -HSync +VSync
        h: width  1152 start 1224 end 1344 total 1536 skew    0 clock   67.7KHz
        v: height  864 start  867 end  871 total  905           clock   74.8Hz
  1024x768 (0x75)   78.8MHz +HSync +VSync
        h: width  1024 start 1040 end 1136 total 1312 skew    0 clock   60.1KHz
        v: height  768 start  769 end  772 total  800           clock   75.1Hz
  1024x768 (0x76)   75.0MHz -HSync -VSync
        h: width  1024 start 1048 end 1184 total 1328 skew    0 clock   56.5KHz
        v: height  768 start  771 end  777 total  806           clock   70.1Hz
  1024x768 (0x62)   65.0MHz -HSync -VSync
        h: width  1024 start 1048 end 1184 total 1344 skew    0 clock   48.4KHz
        v: height  768 start  771 end  777 total  806           clock   60.0Hz
  832x624 (0x77)   57.3MHz -HSync -VSync
        h: width   832 start  864 end  928 total 1152 skew    0 clock   49.7KHz
        v: height  624 start  625 end  628 total  667           clock   74.6Hz
  800x600 (0x78)   50.0MHz +HSync +VSync
        h: width   800 start  856 end  976 total 1040 skew    0 clock   48.1KHz
        v: height  600 start  637 end  643 total  666           clock   72.2Hz
  800x600 (0x79)   49.5MHz +HSync +VSync
        h: width   800 start  816 end  896 total 1056 skew    0 clock   46.9KHz
        v: height  600 start  601 end  604 total  625           clock   75.0Hz
  800x600 (0x63)   40.0MHz +HSync +VSync
        h: width   800 start  840 end  968 total 1056 skew    0 clock   37.9KHz
        v: height  600 start  601 end  605 total  628           clock   60.3Hz
  800x600 (0x7a)   36.0MHz +HSync +VSync
        h: width   800 start  824 end  896 total 1024 skew    0 clock   35.2KHz
        v: height  600 start  601 end  603 total  625           clock   56.2Hz
  640x480 (0x7b)   31.5MHz -HSync -VSync
        h: width   640 start  656 end  720 total  840 skew    0 clock   37.5KHz
        v: height  480 start  481 end  484 total  500           clock   75.0Hz
  640x480 (0x7c)   31.5MHz -HSync -VSync
        h: width   640 start  664 end  704 total  832 skew    0 clock   37.9KHz
        v: height  480 start  489 end  491 total  520           clock   72.8Hz
  640x480 (0x7d)   30.2MHz -HSync -VSync
        h: width   640 start  704 end  768 total  864 skew    0 clock   35.0KHz
        v: height  480 start  483 end  486 total  525           clock   66.7Hz
  640x480 (0x64)   25.2MHz -HSync -VSync
        h: width   640 start  656 end  752 total  800 skew    0 clock   31.5KHz
        v: height  480 start  490 end  492 total  525           clock   60.0Hz
  720x400 (0x7e)   28.3MHz -HSync +VSync
        h: width   720 start  738 end  846 total  900 skew    0 clock   31.5KHz
        v: height  400 start  412 end  414 total  449           clock   70.1Hz




On Jan 14, 2008 1:20 AM, Jerone Young <jerone at gmail.com> wrote:
> 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
> >
> >
>



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