Comment 7 for bug 375609

GOOD session:

$ sudo get-edid | parse-edid
parse-edid: parse-edid version 1.4.1
get-edid: get-edid version 1.4.1

 Performing real mode VBE call
 Interrupt 0x10 ax=0x4f00 bx=0x0 cx=0x0
 Function supported
 Call successful

 VBE version 300
 VBE string at 0x11110 "Intel(r) 82945G Chipset Family Graphics Chip Accelerated VGA BIOS"

VBE/DDC service about to be called
 Report DDC capabilities

 Performing real mode VBE call
 Interrupt 0x10 ax=0x4f15 bx=0x0 cx=0x0
 Function supported
 Call successful

 Monitor and video card combination does not support DDC1 transfers
 Monitor and video card combination supports DDC2 transfers
 0 seconds per 128 byte EDID block transfer
 Screen is not blanked during DDC transfer

Reading next EDID block

VBE/DDC service about to be called
 Read EDID

 Performing real mode VBE call
 Interrupt 0x10 ax=0x4f15 bx=0x1 cx=0x0
 Function supported
 Call successful

parse-edid: EDID checksum passed.

 # EDID version 1 revision 3
Section "Monitor"
 # Block type: 2:0 3:ff
 # Block type: 2:0 3:fd
 # Block type: 2:0 3:fc
 Identifier "Acer AL1916"
 VendorName "ACR"
 ModelName "Acer AL1916"
 # Block type: 2:0 3:ff
 # Block type: 2:0 3:fd
 HorizSync 30-83
 VertRefresh 55-75
 # Max dot clock (video bandwidth) 140 MHz
 # Block type: 2:0 3:fc
 # DPMS capabilities: Active off:yes Suspend:no Standby:no

 Mode "1280x1024" # vfreq 60.020Hz, hfreq 63.981kHz
  DotClock 108.000000
  HTimings 1280 1328 1440 1688
  VTimings 1024 1025 1028 1066
  Flags "+HSync" "+VSync"
 EndMode
 # Block type: 2:0 3:ff
 # Block type: 2:0 3:fd
 # Block type: 2:0 3:fc
EndSection

$ xrandr --verbose
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 1280 x 1280
VGA connected 1280x1024+0+0 (0x3c) normal (normal left inverted right x axis y axis) 376mm x 301mm
 Identifier: 0x3b
 Timestamp: 46714962
 Subpixel: unknown
 Clones:
 CRTC: 0
 CRTCs: 0 1
 Panning: 0x0+0+0
 Tracking: 0x0+0+0
 Border: 0/0/0/0
 Transform: 1.000000 0.000000 0.000000
             0.000000 1.000000 0.000000
             0.000000 0.000000 1.000000
            filter:
 EDID_DATA:
  00ffffffffffff00047249ad0f054080
  0412010368261e6b2a6760a25a499e23
  135054bfef00818f8180714f7140614f
  6140454f4540302a009851002a403070
  1300782d1100001e000000ff004c3439
  3038363831343244490a000000fd0037
  4b1e530e000a202020202020000000fc
  004163657220414c313931360a200076
  1280x1024 (0x3c) 108.0MHz +HSync +VSync *current +preferred
        h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 64.0KHz
        v: height 1024 start 1025 end 1028 total 1066 clock 60.0Hz
  1280x1024 (0x3d) 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 (0x3c) 108.0MHz +HSync +VSync *current
        h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 64.0KHz
        v: height 1024 start 1025 end 1028 total 1066 clock 60.0Hz
  1152x864 (0x3e) 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 (0x3f) 81.6MHz -HSync +VSync
        h: width 1152 start 1216 end 1336 total 1520 skew 0 clock 53.7KHz
        v: height 864 start 865 end 868 total 895 clock 60.0Hz
  1024x768 (0x40) 78.8MHz +HSync +VSync
        h: width 1024 start 1040 end 1136 total 1312 skew 0 clock 60.0KHz
        v: height 768 start 769 end 772 total 800 clock 75.0Hz
  1024x768 (0x41) 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 (0x42) 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 (0x43) 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 (0x44) 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 (0x45) 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 (0x46) 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 (0x47) 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 (0x48) 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 (0x49) 31.5MHz -HSync -VSync
        h: width 640 start 664 end 704 total 832 skew 0 clock 37.9KHz
        v: height 480 start 489 end 492 total 520 clock 72.8Hz
  640x480 (0x4a) 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 (0x4b) 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 59.9Hz
  720x400 (0x4c) 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