X resolution on intel G31 not better than 1024x768

Alex Janssen alex at ourwoods.org
Thu Jun 23 15:09:50 PDT 2011


Hello to all.  Hope you are well.

Sorry for this long post, but I'm stumped.  I've been reading and 
experimenting for most of the day and think I could use some help.

My monitor is a Viewsonic VX2250wm-LED connected through a KVM.

Ubuntu 9.10 on a Intel 4 series integrated graphics controller achieves 
1920x1080 with no X conf files.

I just installed Ubuntu 10.10 on a Biostar G31M board with a Intel 
82G33/G31 Express Integrated Graphics Controller.    The max res it can 
achieve is 1024x768.

I tried Ubuntu 11.04 and got the same result.

I compared the EDID data from both machines and it is the same.  The 
i915 driver thinks it is invalid on the G31 although it appears to be 
the same as what the other machine sees.


 From the G31 board ...

Syslog:
Jun 23 17:04:52 ud05 kernel: [  176.782531] [drm:drm_edid_block_valid] 
*ERROR* Raw EDID:
Jun 23 17:04:52 ud05 kernel: [  176.782533] <3>00 ff ff ff ff ff ff 00 
5a 63 25 cb 01 01 01 05  ........Zc%.....
Jun 23 17:04:52 ud05 kernel: [  176.782535] <3>18 14 01 03 0e b0 1b 78 
2e 50 f5 a4 58 52 97 28  .......x.P..XR.(
Jun 23 17:04:52 ud05 kernel: [  176.782536] <3>13 50 54 bf ef 80 b3 00 
a9 44 a9 c0 95 00 90 40  .PT......D.....@
Jun 23 17:04:52 ud05 kernel: [  176.782538] <3>83 88 81 00 71 4f 42 3a 
80 18 71 38 2d 40 58 2c  ....qOB:..q8- at X,
Jun 23 17:04:52 ud05 kernel: [  176.782539] <3>45 00 df 0c 11 00 00 1e 
00 00 00 ff 00 52 57 53  E............RWS
Jun 23 17:04:52 ud05 kernel: [  176.782541] <3>31 30 32 74 30 35 38 35 
37 0a 00 00 00 fd 00 32  102t05857......2
Jun 23 17:04:52 ud05 kernel: [  176.782543] <3>4b 18 52 15 10 4a 20 20 
20 20 20 20 00 00 00 fc  K.R..J      ....
Jun 23 17:04:52 ud05 kernel: [  176.782544] <3>00 56 58 32 32 35 30 20 
53 45 52 49 45 53 00 82  .VX2250 SERIES..
Jun 23 17:04:52 ud05 kernel: [  176.782546]
Jun 23 17:04:52 ud05 kernel: [  176.782548] i915 0000:00:02.0: VGA-1: 
EDID block 0 invalid.

Xorg.0.log:
[  1018.012] (II) intel(0): EDID vendor "VSC", prod id 52005
[  1018.013] (II) intel(0): Using hsync ranges from config file
[  1018.013] (II) intel(0): Using vrefresh ranges from config file
[  1018.013] (II) intel(0): Printing DDC gathered Modelines:
[  1018.013] (II) intel(0): Modeline "1920x1080"x0.0  148.50  1920 2008 
2052 2200  1080 1084 1089 1125 +hsync +vsync (67.5 kHz)
[  1018.013] (II) intel(0): Modeline "800x600"x0.0   40.00  800 840 968 
1056  600 601 605 628 +hsync +vsync (37.9 kHz)
[  1018.013] (II) intel(0): Modeline "800x600"x0.0   36.00  800 824 896 
1024  600 601 603 625 +hsync +vsync (35.2 kHz)
[  1018.013] (II) intel(0): Modeline "640x480"x0.0   31.50  640 656 720 
840  480 481 484 500 -hsync -vsync (37.5 kHz)
[  1018.013] (II) intel(0): Modeline "640x480"x0.0   31.50  640 664 704 
832  480 489 492 520 -hsync -vsync (37.9 kHz)
[  1018.013] (II) intel(0): Modeline "640x480"x0.0   30.24  640 704 768 
864  480 483 486 525 -hsync -vsync (35.0 kHz)
[  1018.013] (II) intel(0): Modeline "640x480"x0.0   25.18  640 656 752 
800  480 490 492 525 -hsync -vsync (31.5 kHz)
[  1018.013] (II) intel(0): Modeline "720x400"x0.0   28.32  720 738 846 
900  400 412 414 449 -hsync +vsync (31.5 kHz)
[  1018.013] (II) intel(0): Modeline "1280x1024"x0.0  135.00  1280 1296 
1440 1688  1024 1025 1028 1066 +hsync +vsync (80.0 kHz)
[  1018.013] (II) intel(0): Modeline "1024x768"x0.0   78.75  1024 1040 
1136 1312  768 769 772 800 +hsync +vsync (60.0 kHz)
[  1018.013] (II) intel(0): Modeline "1024x768"x0.0   75.00  1024 1048 
1184 1328  768 771 777 806 -hsync -vsync (56.5 kHz)
[  1018.013] (II) intel(0): Modeline "1024x768"x0.0   65.00  1024 1048 
1184 1344  768 771 777 806 -hsync -vsync (48.4 kHz)
[  1018.013] (II) intel(0): Modeline "832x624"x0.0   57.28  832 864 928 
1152  624 625 628 667 -hsync -vsync (49.7 kHz)
[  1018.013] (II) intel(0): Modeline "800x600"x0.0   49.50  800 816 896 
1056  600 601 604 625 +hsync +vsync (46.9 kHz)
[  1018.013] (II) intel(0): Modeline "800x600"x0.0   50.00  800 856 976 
1040  600 637 643 666 +hsync +vsync (48.1 kHz)
[  1018.013] (II) intel(0): Modeline "1152x864"x0.0  108.00  1152 1216 
1344 1600  864 865 868 900 +hsync +vsync (67.5 kHz)
[  1018.013] (II) intel(0): Modeline "1680x1050"x0.0  146.25  1680 1784 
1960 2240  1050 1053 1059 1089 -hsync +vsync (65.3 kHz)
[  1018.013] (II) intel(0): Modeline "1600x1200"x0.0  162.00  1600 1664 
1856 2160  1200 1201 1204 1250 +hsync +vsync (75.0 kHz)
[  1018.013] (II) intel(0): Modeline "1600x900"x60.0  119.00  1600 1696 
1864 2128  900 901 904 932 -hsync +vsync (55.9 kHz)
[  1018.013] (II) intel(0): Modeline "1440x900"x0.0  106.50  1440 1520 
1672 1904  900 903 909 934 -hsync +vsync (55.9 kHz)
[  1018.013] (II) intel(0): Modeline "1400x1050"x0.0  121.75  1400 1488 
1632 1864  1050 1053 1057 1089 -hsync +vsync (65.3 kHz)
[  1018.014] (II) intel(0): Modeline "1280x1024"x0.0  108.00  1280 1328 
1440 1688  1024 1025 1028 1066 +hsync +vsync (64.0 kHz)
[  1018.014] (II) intel(0): Modeline "1280x800"x0.0   83.50  1280 1352 
1480 1680  800 803 809 831 -hsync +vsync (49.7 kHz)


xrandr --verbose:
apjjr at ud05:~$ xrandr --verbose
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096
VGA1 connected 1024x768+0+0 (0x42) normal (normal left inverted right x 
axis y axis) 477mm x 268mm
     Identifier: 0x41
     Timestamp:  161900
     Subpixel:   unknown
     Gamma:      1.0:1.0:1.0
     Brightness: 1.0
     Clones:
     CRTC:       0
     CRTCs:      0 1
     Transform:  1.000000 0.000000 0.000000
                 0.000000 1.000000 0.000000
                 0.000000 0.000000 1.000000
                filter:
     EDID:
         00ffffffffffff005a6325cb01010101
         181401030e301b782e50f5a458529728
         135054bfef80b300a940a9c095009040
         81808100714f023a801871382d40582c
         4500dd0c1100001e000000ff00525753
         3130323430353835370a000000fd0032
         4b185215000a202020202020000000fc
         00565832323530205345524945530082
   1024x768 (0x42)   65.0MHz -HSync -VSync *current
         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
   800x600 (0x43)   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 (0x44)   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
   848x480 (0x45)   33.8MHz +HSync +VSync
         h: width   848 start  864 end  976 total 1088 skew    0 clock   
31.0KHz
         v: height  480 start  486 end  494 total  517           clock   
60.0Hz
   640x480 (0x46)   25.2MHz -HSync -VSync
         h: width   640 start  656 end  752 total  800 skew    0 clock   
31.5KHz
         v: height  480 start  489 end  492 total  525           clock   
59.9Hz



I have tried to force the resolution with a xorg.conf.d/10-monitor.conf 
with no better results as follows:
Section "Monitor"
     Identifier   "Monitor0"
     VendorName   "Viewsonic"
     ModelName    "VX2250wm-LED"
     HorizSync    24.0 - 83.0
     VertRefresh  50.0 - 75.0
     DisplaySize  477 268
EndSection

Section "Device"
     Identifier  "Card0"
     Driver      "intel"
     VendorName  "Intel Corporation"
     BoardName   "82G33/G31 Express Integrated Graphics Controller"
     BusID       "PCI:0:2:0"
EndSection

Section "Screen"
     Identifier "Screen0"
     Device     "Card0"
     Monitor    "Monitor0"
     DefaultDepth    24
         SubSection "Display"
                 Depth           1
                 Modes           "1920x1080" "1440x900" "1360x768" 
"1152x864" "1024x768"
         EndSubSection
         SubSection "Display"
                 Depth           4
                 Modes           "1920x1080" "1440x900" "1360x768" 
"1152x864" "1024x768"
         EndSubSection
         SubSection "Display"
                 Depth           8
                 Modes           "1920x1080" "1440x900" "1360x768" 
"1152x864" "1024x768"
         EndSubSection
         SubSection "Display"
                 Depth           15
                 Modes           "1920x1080" "1440x900" "1360x768" 
"1152x864" "1024x768"
         EndSubSection
         SubSection "Display"
                 Depth           16
                 Modes           "1920x1080" "1440x900" "1360x768" 
"1152x864" "1024x768"
         EndSubSection
         SubSection "Display"
                 Depth           24
                 Modes           "1920x1080" "1440x900" "1360x768" 
"1152x864" "1024x768"
         EndSubSection
EndSection



Thanks for your help,
Alex

-- 
Ourwoods.org

It is hard to imagine a more stupid or more dangerous way of making 
decisions than by putting those decisions in the hands of people who pay 
no price for being wrong. - Thomas Sowell (245)




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