dmesg sunxi-3.4
[    1.819034] I2C: i2c-3: HDMI I2C adapter
[    1.844529] ParseEDID
[    1.878758] EDID version: 1.3
[    1.889745] PCLK=119000000 X 1680 1728 1760 1840 Y 1050 1053 1059 1080 fr 59 PN
[    1.893579] Using above mode as preferred EDID mode
[    1.901604] PCLK=146250000 X 1680 1784 1960 2240 Y 1050 1053 1059 1089 fr 59 NP
[    1.927887] disp_clk: Could not find a matching pll-freq for 78800000 pclk
[    1.947404] disp_clk: Could not find a matching pll-freq for 53450000 pclk
[    1.980520] disp_clk: Could not find a matching pll-freq for 26150000 pclk
[    1.996712] disp_clk: Could not find a matching pll-freq for 146250000 pclk
[    2.016579] waited 0 ms for EDID info
[    2.023129] disp clks: lcd 119000000 pre_scale 1 hdmi 119000000 pll 357000000 2x 0


[root@src fed]# get-edid | parse-edid
get-edid: get-edid version 2.0.0

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

	VBE version 300
	VBE string at 0xc01dc "ATI ATOMBIOS"

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
parse-edid: parse-edid version 2.0.0
	Function supported
	Call successful

parse-edid: EDID checksum passed.

	# EDID version 1 revision 3
Section "Monitor"
	# Block type: 2:0 3:fd
	# Block type: 2:0 3:fc
	Identifier "W2042"
	VendorName "GSM"
	ModelName "W2042"
	# Block type: 2:0 3:fd
	HorizSync 30-83
	VertRefresh 56-75
	# Max dot clock (video bandwidth) 150 MHz
	# Block type: 2:0 3:fc
	# DPMS capabilities: Active off:yes  Suspend:yes  Standby:yes

	Mode 	"1680x1050"	# vfreq 59.883Hz, hfreq 64.674kHz
		DotClock	119.000000
		HTimings	1680 1728 1760 1840
		VTimings	1050 1053 1059 1080
		Flags	"-HSync" "+VSync"
	EndMode
	Mode 	"1680x1050"	# vfreq 59.954Hz, hfreq 65.290kHz
		DotClock	146.250000
		HTimings	1680 1784 1960 2240
		VTimings	1050 1053 1059 1089
		Flags	"+HSync" "-VSync"
	EndMode
	# Block type: 2:0 3:fd
	# Block type: 2:0 3:fc
EndSection