Chrome Version: 57.0.2984.0
OS: Chrome

1. Plug into Samsung 4K monitor in the Partner lab using HoHo.
2. Expect to see something.
3. Don't, unless you choose something other than the default resolution.

It looks like we're trying to pick 4K at 60 Hz.  Looking at modetest I see:

  3840x2160 60 3840 4016 4104 4400 2160 2168 2178 2250 594000 flags: phsync, pvsync; type: preferred, driver

---

As per Todd Broch:

My recollection of this makes me think its crosbug.com/p/39397.  If thats the case, workaround https://codereview.chromium.org/1146793002 looks to be gone if my cs.corp.google.com queries are correct.

---

Monitor EDID:

Extracted contents:
header:          00 ff ff ff ff ff ff 00
serial number:   4c 2d b3 0b 01 00 00 00 02 18
version:         01 03
basic params:    80 bb 69 78 0a
chroma info:     ee 91 a3 54 4c 99 26 0f 50 54
established:     bd ef 80
standard:        71 4f 81 c0 81 00 81 80 95 00 a9 c0 b3 00 01 01
descriptor 1:    08 e8 00 30 f2 70 5a 80 b0 58 8a 00 50 1d 74 00 00 1e
descriptor 2:    02 3a 80 18 71 38 2d 40 58 2c 45 00 50 1d 74 00 00 1e
descriptor 3:    00 00 00 fd 00 18 4b 0f 87 3c 00 0a 20 20 20 20 20 20
descriptor 4:    00 00 00 fc 00 53 41 4d 53 55 4e 47 0a 20 20 20 20 20
extensions:      01
checksum:        94

Manufacturer: SAM Model bb3 Serial Number 1
Made week 2 of 2014
EDID version: 1.3
Digital display
Maximum image size: 187 cm x 105 cm
Gamma: 2.20
Supported color formats: RGB 4:4:4, YCrCb 4:4:4
First detailed timing is preferred timing
Established timings supported:
  720x400@70Hz
  640x480@60Hz
  640x480@67Hz
  640x480@72Hz
  640x480@75Hz
  800x600@60Hz
  800x600@72Hz
  800x600@75Hz
  832x624@75Hz
  1024x768@60Hz
  1024x768@70Hz
  1024x768@75Hz
  1280x1024@75Hz
  1152x870@75Hz
Standard timings supported:
  1152x864@75Hz
  1280x720@60Hz
  1280x800@60Hz
  1280x1024@60Hz
  1440x900@60Hz
  1600x900@60Hz
  1680x1050@60Hz
Detailed mode: Clock 594.000 MHz, 1872 mm x 1053 mm
               3840 4016 4104 4400 hborder 0
               2160 2168 2178 2250 vborder 0
               +hsync +vsync 
Detailed mode: Clock 148.500 MHz, 1872 mm x 1053 mm
               1920 2008 2052 2200 hborder 0
               1080 1084 1089 1125 vborder 0
               +hsync +vsync 
Monitor ranges (GTF): 24-75Hz V, 15-135kHz H, max dotclock 600MHz
Monitor name: SAMSUNG
Has 1 extension blocks
Checksum: 0x94 (valid)

CEA extension block
Extension version: 3
54 bytes of CEA data
  Video data block
    VIC 97 Unknown mode 
    VIC 16 1920x1080@60Hz 
    VIC 31 1920x1080@50Hz 
    VIC 04 1280x720@60Hz 
    VIC 19 1280x720@50Hz 
    VIC 05 1920x1080i@60Hz 
    VIC 20 1920x1080i@50Hz 
    VIC 32 1920x1080@24Hz 
    VIC 33 1920x1080@25Hz 
    VIC 34 1920x1080@30Hz 
    VIC 93 Unknown mode 
    VIC 94 Unknown mode 
    VIC 95 Unknown mode 
    VIC 96 Unknown mode 
    VIC 101 Unknown mode 
    VIC 102 Unknown mode 
    VIC 98 Unknown mode 
    VIC 99 Unknown mode 
    VIC 100 Unknown mode 
    VIC 07 1440x480i@60Hz 
    VIC 22 1440x576i@50Hz 
    VIC 03 720x480@60Hz 
    VIC 18 720x576@50Hz 
  Audio data block
    Linear PCM, max channels 2
    Supported sample rates (kHz): 48 44.1 32
    Supported sample sizes (bits): 24 20 16
  Speaker allocation data block
  Extended tag: video capability data block
    YCbCr quantization: No Data (0)
    RGB quantization: No Data (0)
    PT scan behaviour: No Data (0)
    IT scan behaviour: Support both over- and underscan (3)
    CE scan behaviour: Support both over- and underscan (3)
  Vendor-specific data block, OUI 000c03 (HDMI)
    Source physical address 3.0.0.0
    Supports_AI
    DC_36bit
    DC_30bit
    DC_Y444
    Maximum TMDS clock: 300MHz
    Extended HDMI video details:
      HDMI VIC 0 3840x2160@30Hz
      HDMI VIC 1 3840x2160@25Hz
      HDMI VIC 2 3840x2160@24Hz
      HDMI VIC 3 4096x2160@24Hz
  Extended tag: Reserved video block (0f)
Underscans PC formats by default
Basic audio support
Supports YCbCr 4:4:4
Supports YCbCr 4:2:2
1 native detailed modes
Detailed mode: Clock 74.250 MHz, 1872 mm x 1053 mm
               1920 2448 2492 2640 hborder 0
                540  542  547  562 vborder 0
               +hsync +vsync interlaced 
Detailed mode: Clock 85.500 MHz, 1872 mm x 1053 mm
               1366 1436 1579 1792 hborder 0
                768  771  774  798 vborder 0
               +hsync +vsync 
Checksum: 0x29 (valid)

 

Deleted: log-020717-135327.tar.gz 2.5 MB

log-020717-135327.tar.gz 2.5 MB Download