Comment 2 for bug 1831587

Revision history for this message
Nicolas (nicolas-hoeft) wrote :

Same issue for me on an ThinkPad X1 extreme (gen 2),

EDID info:

# edid-decode /sys/class/drm/card0-eDP-1/edid [09:29:37]
Extracted contents:
header: 00 ff ff ff ff ff ff 00
serial number: 4c 83 41 41 00 00 00 00 13 1d
version: 01 04
basic params: b5 22 13 78 02
chroma info: 94 91 ae 51 3e b7 24 0b 50 54
established: 00 00 00
standard: 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
descriptor 1: f0 d4 00 40 f1 70 18 80 30 20 44 00 58 c2 10 00 00 1b
descriptor 2: f0 d4 00 40 f1 70 18 80 30 20 44 00 58 c2 10 00 00 1b
descriptor 3: 00 00 00 0f 00 ff 09 3c ff 09 3c 2c 80 00 00 00 00 00
descriptor 4: 00 00 00 fe 00 41 54 4e 41 35 36 57 52 30 38 2d 30 20
extensions: 01
checksum: 15

Manufacturer: SDC Model 4141 Serial Number 0
Made week 19 of 2019
EDID version: 1.4
Digital display
10 bits per primary color channel
DisplayPort interface
Maximum image size: 34 cm x 19 cm
Gamma: 2.20
Supported color formats: RGB 4:4:4
First detailed timing is preferred timing
Established timings supported:
Standard timings supported:
Detailed mode: Clock 545.120 MHz, 344 mm x 194 mm
               3840 3888 3920 4160 hborder 0
               2160 2164 2168 2184 vborder 0
               +hsync -vsync
Detailed mode: Clock 545.120 MHz, 344 mm x 194 mm
               3840 3888 3920 4160 hborder 0
               2160 2164 2168 2184 vborder 0
               +hsync -vsync
Manufacturer-specified data, tag 15
ASCII string: ATNA56WR08-0
Has 1 extension blocks
Checksum: 0x15 (valid)

CEA extension block
Extension version: 3
11 bytes of CEA data
  Extended tag: Colorimetry data block
    xvYCC601
    xvYCC709
    sYCC601
    AdobeYCC601
    AdobeRGB
    BT2020cYCC
    BT2020YCC
    BT2020RGB
  Extended tag: HDR static metadata data block
    Electro optical transfer functions:
      Traditional gamma - SDR luminance range
      Traditional gamma - HDR luminance range
      SMPTE ST2084
    Supported static metadata descriptors:
      Static metadata type 1
    Desired content max luminance: 115
    Desired content max frame-average luminance: 109
    Desired content min luminance: 7
0 native detailed modes
Checksum: 0xab (valid)

EDID block does NOT conform to EDID 1.3!
        Missing name descriptor
        Missing monitor ranges
        Detailed block string not properly terminated