MacBook Intel GMA950 w/ Dell 2407WFP - resolution problem

Jerone Young jerone at gmail.com
Wed Jan 2 20:02:23 PST 2008


Ok this problem is getting interesting. So I recently upgraded to
Ubuntu Hurdy builds. Running with the included intel driver & latest
git tree I now see this for my 1920x1200 Samsung 243T. This data is
clearly wrong. So I'm wondering how the intel driver is not reading
the EDID correctly and falling to theses values. As you can see in my
previos email 1280x1024 @ 75hz is not valid for the Samsung 243T.

jerone at laptop:~$ xrandr
Screen 0: minimum 320 x 200, current 1440 x 900, maximum 1440 x 1440
VGA connected (normal left inverted right x axis y axis)
   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
   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)
jerone at laptop:~$ xrandr --output VGA --right-of LVDS --auto
xrandr: screen cannot be larger than 1440x1440 (desired size 2720x1024)


Here is more verbose info from Xrandr:

GA connected (normal left inverted right x axis y axis)
	Identifier: 0x5b
	Timestamp:  489120
	Subpixel:   unknown
	Clones:
	CRTCs:      0 1
	EDID_DATA:
		00ffffffffffff004c2dd9003432424e
		110f01036c3420a02aee95a3544c9926
		0f5054bfef80a9408180714f01010101
		010101010101283c80a070b023403020
		360006442100001a000000fd00374b1e
		5011000a202020202020000000fc0053
		796e634d61737465720a2020000000ff
		0048344b593430303634390a2020002d
  1280x1024 (0x6f)  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 (0x70)  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 (0x71)  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 (0x72)  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 (0x73)   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 (0x74)   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 (0x75)   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 (0x76)   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 (0x77)   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 (0x78)   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 (0x79)   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 (0x7a)   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 (0x7b)   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 (0x7c)   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 Dec 30, 2007 1:01 AM, Jerone Young <jerone at gmail.com> wrote:
> I am seeing something like this problem with my GMA965 (in my Lenovo
> Thinkpad T61) w/ Samsung 243T via DVI or VGA connectors. Xrandr sees
> it can do 1920x1200 yet it is stuck at 1280x1024 @ 75hz , which my
> monitor then shows out of sync. The problem is definitely with the
> intel driver as I can use it fine under Windows Vista with my Thinkpad
> via DVI or VGA.
>
> When you try to do anything with xrandr to the monitor .. it does
> NOTHING! Can't change the res on it or anything. Now this works
> perfectly fine with my Nvidia card in my desktop using xorg "nv"
> driver as well as proprietary driver.
>
> I've attached 2 docs to this email showing output data from my desktop
> hooked to the Samsung 243T (the good one) .. and my Thinkpad T61
> connected to the Samsung 243T
>
> I'm really surprised as I really expected this to just work .. and now
> I've had a chance to try it and I'm like WTF!
>
> Docs are attached with xrandr info for everyone's enjoyment (or
> someone can figure out what is going on).
>
> Also looking through bugzilla I found something that may "possibly" be related:
> https://bugs.freedesktop.org/show_bug.cgi?id=10694
>



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