Seiki Digital SE50UY04 50-Inch 4K UHD 120Hz LED HDTV

Details

It runs Linux ;-)

Notes

• Stuck in burn mode?
  The remote will not function and a power cycle will not help. With the unit powered on, hold the power button down for about 20 seconds to exit this mode.

Resources

• Seiki U39UY4 (4K resolution) and xrandr problems
• Everything you wanted to know about those dirt cheap Seiki 4k TVs on reddit
• Firmware hack for 120Hz @ 1080p
• Hacking the Seiki SE39UY04
• Firmware hack post on Overclock forum
• Seiki SE50UY04 50" 4K display on AVS Forum
• Custom Resolution Utility (CRU)
  Custom Resolution Utility (CRU) is an EDID editor with a focus on custom resolutions. CRU shows you how the monitor defines resolutions and other capabilities and gives you the power to change it. Add custom resolutions, remove unwanted resolutions, edit FreeSync ranges, and more.
• How to force display resolution and bypass EDID - For virtual-console level changes
• Alternative Firmware
• xrandr - Adding undetected resolutions TL;DR:

xrandr  --newmode  "3840x2160_33.00"  375.50  3840 4096 4504 5168  2160 2163 2168 2203 -hsync +vsync

xrandr --addmode HDMI-2  3840x2160_33.00

Unfortunately, this is not working. I get:

X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  140 (RANDR)
  Minor opcode of failed request:  18 (RRAddOutputMode)
  Serial number of failed request:  41
  Current serial number in output stream:  42

• seiki_custom_edid_120_240hz.inf
  Pulled from The Wayback Machine <https://web.archive.org/web/20141019151719/http://box.houkouonchi.jp/seiki_custom_edid_120_240hz.inf>

; INF file generated by Monitor Asset Manager (2.59.0.934), 12/12/2013
; Copyright (c) EnTech Taiwan, 1995-2011.
; Internet: http://www.entechtaiwan.com

[Version]
Signature="$WINDOWS NT$"
Class=Monitor
ClassGUID={4d36e96e-e325-11ce-bfc1-08002be10318}
Provider=%MFG%
DriverVer=12/12/2013, 1.0.0.0
;CatalogFile=YourSignedCatalogFile.cat

[DestinationDirs]
DefaultDestDir=23

[SourceDisksNames]
1=%DISC%

[SourceDisksFiles]
;YourColorProfileFile.icm

[Manufacturer]
%VENDOR%=EDID_OVERRIDE,NTx86,NTamd64

[EDID_OVERRIDE.NTx86]
%PRODUCTID%=OVERRIDDEN-EDID.Install, MONITOR\SEK0000

[EDID_OVERRIDE.NTamd64]
%PRODUCTID%=OVERRIDDEN-EDID.Install.NTamd64, MONITOR\SEK0000

[OVERRIDDEN-EDID.Install.NTx86]
DelReg=DEL_CURRENT_REG
AddReg=OVERRIDDEN-EDID.AddReg, MODE1, DPMS
CopyFiles=OVERRIDDEN-EDID.CopyFiles

[OVERRIDDEN-EDID.Install.NTamd64]
DelReg=DEL_CURRENT_REG
AddReg=OVERRIDDEN-EDID.AddReg, MODE1, DPMS
CopyFiles=OVERRIDDEN-EDID.CopyFiles

[OVERRIDDEN-EDID.Install.NTx86.HW]
AddReg=OVERRIDDEN-EDID_AddReg

[OVERRIDDEN-EDID.Install.NTamd64.HW]
AddReg=OVERRIDDEN-EDID_AddReg

[OVERRIDDEN-EDID_AddReg]
;Base EDID
HKR,EDID_OVERRIDE,"0",0x01,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x4C,0xAB,0x00,0x00,0x01,0x00,0x00,0x00,0x09,0x17,0x01,0x03,0x81,0x6E,0x3E,0x78,0x8A,0xA5,0x8E,0xA6,0x54,0x4A,0x9C,0x26,0x12,0x45,0x46,0x04,0x43,0x00,0x81,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,0x74,0x00,0x30,0xF2,0x70,0x5A,0x80,0xB0,0x58,0x8A,0x00,0xBA,0x89,0x21,0x00,0x00,0x1E,0x04,0x74,0x80,0x18,0x71,0x38,0x2D,0x40,0x58,0x2C,0x45,0x00,0xB9,0x88,0x21,0x00,0x00,0x1E,0x04,0x74,0x00,0x72,0x51,0xD0,0x1E,0x20,0x6E,0x28,0x55,0x00,0xB8,0x87,0x21,0x00,0x00,0x1E,0x00,0x00,0x00,0xFC,0x00,0x53,0x45,0x35,0x30,0x2D,0x33,0x39,0x55,0x59,0x30,0x34,0x0A,0x20,0x01,0xF5

[DEL_CURRENT_REG]
HKR,MODES
HKR,EDID_OVERRIDE
HKR,,MaxResolution
HKR,,DPMS
HKR,,ICMProfile

[DPMS]
HKR,,DPMS,,1

[MODE1]
HKR,,MaxResolution,,"3840,2160"

[OVERRIDDEN-EDID.AddReg]
HKR,"MODES\3840,2160",Mode1,,""

[OVERRIDDEN-EDID.CopyFiles]
;YourColorProfileFile.icm

[Strings]
MFG="EnTech Taiwan"
DISC="Monitor EDID Override Installation Disk"
PRODUCTID="SEK SE50UY04/SE39UY04 (Custom High Hz EDID)"
VENDOR="SEK"