Hi Experts,
In ParseEdidData() in
IntelFrameworkModulePkg\Csm\BiosThunk\VideoDxe\BiosVideo.c, the EDID
information pointed by EdidBuffer is in the format of VBE 3.0 and retrieved
by int 10 4F15. According to the definition of following timing fields,
1280*1024 should be the highest resolution to be supported in this way.
EstablishedTimings[0]:
Bitfields for DPMS established timings 1:
Bit(s) Description
0 720x400 @ 70 Hz (VGA 640x400, IBM)
1 720x400 @ 88 Hz (XGA2)
2 640x480 @ 60 Hz (VGA)
3 640x480 @ 67 Hz (Mac II, Apple)
4 640x480 @ 72 Hz (VESA)
5 640x480 @ 75 Hz (VESA)
6 800x600 @ 56 Hz (VESA)
7 800x600 @ 60 Hz (VESA)
EstablishedTimings[1]:
Bitfields for DPMS established timings 2:
Bit(s) Description
0 800x600 @ 72 Hz (VESA)
1 800x600 @ 75 Hz (VESA)
2 832x624 @ 75 Hz (Mac II)
3 1024x768 @ 87 Hz interlaced (8514A)
4 1024x768 @ 60 Hz (VESA)
5 1024x768 @ 70 Hz (VESA)
6 1024x768 @ 75 Hz (VESA)
7 1280x1024 @ 75 Hz (VESA)
Our question is if there is one way to retrieve the information about higher
resolution, if it's supported by video output device?
Thanks,
Hawk.
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