[mythtv-users] Skewed text and video display on widescreen 5120x1440
Alain
mythuser at alain.homeunix.org
Thu Jan 14 18:08:59 UTC 2021
Hi,
Thanks for taking a look, here is the EDID:
EDID:
00ffffffffffff00410c5409ae0a0000
221e0103807722782edc41ac5047a526
115054bfef00d1c0b300950081808140
81c0010101011a6800a0f0381f403020
3a00a9504100001a000000ff00415530
32303334303032373334000000fc0050
484c2034393850390a202020000000fd
00304b1e723c000a2020202020200246
02033af150101f051404130312021101
60615d5e5f230907078301000067030c
001000003c67d85dc401788000e30f00
18681a00000101304be6328200a0f038
1f4030203a00a9504100001aa073006a
a0a0295008203500a9504100001a565e
00a0a0a0295030203500a9504100001e
000000000000000000000000000000cb
7012790000030128bed60008ff139f00
2f801f009f0528000200090033b70008
ff139f002f801f009f05280002000900
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000f90
Alain
On 14.01.21 11:16, Mark Kendall wrote:
> On Mon, 11 Jan 2021 at 17:12, Alain <mythuser at alain.homeunix.org> wrote:
>> Hi,
>>
>> Setting the Aspect Ratio to "0% {32:9}" fixes the video display which is great and a bit unexpected as the GUI is still streched out with the characters far too big.
> Well - some good news at least:)
>
> To be honest I'm not entirely sure how well any theme will cope with a
> screen that wide; as they are generally designed for 16:9 or 4:3.
>
> That said, I suspect the font sizing/scaling is out as I presume
> somewhere in Qt/myth it is using the DPI figure to work out how to
> scale the fonts properly - and presumably the DPI is wrong. (It's not
> a part of the code I've ever really looked at).
>
>> I'm including the log. As for the EDID, xrandr gets it right, but if I then decode the EDID HEX data that it provides, I don't see the 5120x1440 resolution.
> The mode description for 5120x1440 is buried in an EDID extension -
> xrandr is probably up to date whereas edid-decode isn't. Not something
> to worry about really.
>
> The bigger issue is why xrandr (and qt) do not pull out the display
> size correctly (but edid-decode seems to find it OK).
>
> Can you post the edid?
>
> Regards
> Mark
>
>> xrandr --verbose
>>
>> Screen 0: minimum 8 x 8, current 5120 x 1440, maximum 32767 x 32767
>> ...
>> HDMI-0 connected 5120x1440+0+0 (0x1be) normal (normal left inverted right x axis y axis) 1mm x 1mm
>> ...
>>
>> 3840x1080 (0x1bd) 266.500MHz +HSync -VSync +preferred
>> h: width 3840 start 3888 end 3920 total 4000 skew 0 clock 66.62KHz
>> v: height 1080 start 1083 end 1093 total 1111 clock 59.97Hz
>> 5120x1440 (0x1be) 549.750MHz +HSync -VSync *current
>> h: width 5120 start 5168 end 5200 total 5280 skew 0 clock 104.12KHz
>> v: height 1440 start 1443 end 1453 total 1481 clock 70.30Hz
>> 5120x1440 (0x1bf) 469.000MHz +HSync -VSync
>> h: width 5120 start 5168 end 5200 total 5280 skew 0 clock 88.83KHz
>> v: height 1440 start 1443 end 1453 total 1481 clock 59.98Hz
>> 3840x2160 (0x1c0) 593.410MHz +HSync +VSync
>> h: width 3840 start 4016 end 4104 total 4400 skew 0 clock 134.87KHz
>> v: height 2160 start 2168 end 2178 total 2250 clock 59.94Hz
>> ,,,
>>
>> If I then decode the raw EDID:
>>
>> cat /tmp/toto | edid-decode
>> edid-decode (hex):
>>
>> 00 ff ff ff ff ff ff 00 41 0c 54 09 ae 0a 00 00
>> ....
>>
>> EDID version: 1.3
>> Manufacturer: PHL Model 2388 Serial Number 32
>> Made in week 34 of 2020
>> Digital display
>> Maximum image size: 119 cm x 34 cm
>> Gamma: 2.20
>> DPMS levels: Off
>> RGB color display
>> Default (sRGB) color space is primary color space
>> First detailed timing is preferred timing
>> Color Characteristics
>> Red: 0.6748, 0.3134
>> Green: 0.2802, 0.6445
>> Blue: 0.1494, 0.0664
>> White: 0.3125, 0.3291
>> Established Timings I & II
>> 720x400 70.082 Hz 9:5 31.467 kHz 28.320 MHz (IBM)
>> 640x480 59.940 Hz 4:3 31.469 kHz 25.175 MHz (DMT)
>> 640x480 66.667 Hz 4:3 35.000 kHz 30.240 MHz (Apple)
>> 640x480 72.809 Hz 4:3 37.861 kHz 31.500 MHz (DMT)
>> 640x480 75.000 Hz 4:3 37.500 kHz 31.500 MHz (DMT)
>> 800x600 56.250 Hz 4:3 35.156 kHz 36.000 MHz (DMT)
>> 800x600 60.317 Hz 4:3 37.879 kHz 40.000 MHz (DMT)
>> 800x600 72.188 Hz 4:3 48.077 kHz 50.000 MHz (DMT)
>> 800x600 75.000 Hz 4:3 46.875 kHz 49.500 MHz (DMT)
>> 832x624 74.551 Hz 4:3 49.726 kHz 57.284 MHz (Apple)
>> 1024x768 60.004 Hz 4:3 48.363 kHz 65.000 MHz (DMT)
>> 1024x768 70.069 Hz 4:3 56.476 kHz 75.000 MHz (DMT)
>> 1024x768 75.029 Hz 4:3 60.023 kHz 78.750 MHz (DMT)
>> 1280x1024 75.025 Hz 5:4 79.976 kHz 135.000 MHz (DMT)
>> Standard Timings
>> 1920x1080 60.000 Hz 16:9 67.500 kHz 148.500 MHz (DMT)
>> 1680x1050 59.954 Hz 16:10 65.290 kHz 146.250 MHz (DMT)
>> 1440x900 59.887 Hz 16:10 55.935 kHz 106.500 MHz (DMT)
>> 1280x1024 60.020 Hz 5:4 63.981 kHz 108.000 MHz (DMT)
>> 1280x960 60.000 Hz 4:3 60.000 kHz 108.000 MHz (DMT)
>> 1280x720 60.000 Hz 16:9 45.000 kHz 74.250 MHz (DMT)
>> Detailed mode: Clock 266.500 MHz, 1193 mm x 336 mm
>> 3840 3888 3920 4000 ( 48 32 80)
>> 1080 1083 1093 1111 ( 3 10 18)
>> +hsync -vsync
>> VertFreq: 59.968 Hz, HorFreq: 66.625 kHz
>> Display Product Serial Number: 32
>> Display Product Name: PHL 498P9
>> Display Range Limits
>> Monitor ranges (GTF): 48-75 Hz V, 30-114 kHz H, max dotclock 600 MHz
>> Has 2 extension blocks
>> Checksum: 0x46
>>
>> ----------------
>>
>> CTA-861 Extension Block Revision 3
>> Underscans PC formats by default
>> Basic audio support
>> Supports YCbCr 4:4:4
>> Supports YCbCr 4:2:2
>> 1 native detailed modes
>> 54 bytes of CTA data blocks
>> Video Data Block
>> 1920x1080 60.000 Hz 16:9 67.500 kHz 148.500 MHz (VIC 16)
>> 1920x1080 50.000 Hz 16:9 56.250 kHz 148.500 MHz (VIC 31)
>> 1920x1080i 60.000 Hz 16:9 33.750 kHz 74.250 MHz (VIC 5)
>> 1920x1080i 50.000 Hz 16:9 28.125 kHz 74.250 MHz (VIC 20)
>> 1280x720 60.000 Hz 16:9 45.000 kHz 74.250 MHz (VIC 4)
>> 1280x720 50.000 Hz 16:9 37.500 kHz 74.250 MHz (VIC 19)
>> 720x480 59.940 Hz 16:9 31.469 kHz 27.000 MHz (VIC 3)
>> 720x576 50.000 Hz 16:9 31.250 kHz 27.000 MHz (VIC 18)
>> 720x480 59.940 Hz 4:3 31.469 kHz 27.000 MHz (VIC 2)
>> 720x576 50.000 Hz 4:3 31.250 kHz 27.000 MHz (VIC 17)
>> 640x480 59.940 Hz 4:3 31.469 kHz 25.175 MHz (VIC 1)
>> 3840x2160 50.000 Hz 16:9 112.500 kHz 594.000 MHz (VIC 96)
>> 3840x2160 60.000 Hz 16:9 135.000 kHz 594.000 MHz (VIC 97)
>> 3840x2160 24.000 Hz 16:9 54.000 kHz 297.000 MHz (VIC 93)
>> 3840x2160 25.000 Hz 16:9 56.250 kHz 297.000 MHz (VIC 94)
>> 3840x2160 30.000 Hz 16:9 67.500 kHz 297.000 MHz (VIC 95)
>> 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
>> Speaker map:
>> FL/FR - Front Left/Right
>> Vendor-Specific Data Block, OUI 0x000c03 (HDMI)
>> Source physical address 1.0.0.0
>> Maximum TMDS clock: 300 MHz
>> Vendor-Specific Data Block, OUI 0xc45dd8 (HDMI Forum)
>> Version: 1
>> Maximum TMDS Character Rate: 600 MHz
>> SCDC Present
>> Extended tag: YCbCr 4:2:0 Capability Map Data Block
>> 3840x2160 50.000 Hz 16:9 112.500 kHz 594.000 MHz (VIC 96)
>> 3840x2160 60.000 Hz 16:9 135.000 kHz 594.000 MHz (VIC 97)
>> Vendor-Specific Data Block, OUI 0x00001a (AMD)
>> 01 01 30 4b e6 ..0K.
>> Detailed mode: Clock 333.300 MHz, 1193 mm x 336 mm
>> 3840 3888 3920 4000 ( 48 32 80)
>> 1080 1083 1093 1111 ( 3 10 18)
>> +hsync -vsync
>> VertFreq: 75.000 Hz, HorFreq: 83.325 kHz
>> Detailed mode: Clock 296.000 MHz, 1193 mm x 336 mm
>> 2560 2568 2600 2666 ( 8 32 66)
>> 1440 1443 1448 1481 ( 3 5 33)
>> +hsync -vsync
>> VertFreq: 74.968 Hz, HorFreq: 111.028 kHz
>> Detailed mode: Clock 241.500 MHz, 1193 mm x 336 mm
>> 2560 2608 2640 2720 ( 48 32 80)
>> 1440 1443 1448 1481 ( 3 5 33)
>> +hsync +vsync
>> VertFreq: 59.951 Hz, HorFreq: 88.787 kHz
>> Checksum: 0xcb
>>
>> ----------------
>>
>> DisplayID Extension Block Version 1.2 Length 121 Extension Count 0
>> Display Product Type: Extension Section
>> Video Timing Modes Type 1 - Detailed Timings Data Block
>> Detailed mode: Clock 549.750 MHz, aspect undefined, no 3D stereo
>> 5120 5168 5200 5280 ( 48 32 80)
>> 1440 1443 1453 1481 ( 3 10 28)
>> +hsync -vsync
>> VertFreq: 70.303 Hz, HorFreq: 104.119 kHz
>> Detailed mode: Clock 469.000 MHz, aspect undefined, no 3D stereo
>> 5120 5168 5200 5280 ( 48 32 80)
>> 1440 1443 1453 1481 ( 3 10 28)
>> +hsync -vsync
>> VertFreq: 59.977 Hz, HorFreq: 88.826 kHz
>> Checksum: 0xf
>> Checksum: 0x90
>>
>>
>>
>> Regards,
>>
>> Alain
>>
>>
>>
>> On 10.01.21 18:33, Mark Kendall wrote:
>>
>> On Sun, 10 Jan 2021 at 15:22, Alain <mythuser at alain.homeunix.org> wrote:
>>
>> Hi,
>> I do not have the choice of "Auto (Assume...)", I only have the
>> "Auto" choice or more specific ones. But whichever I choose, the
>> results seems to be the same visually.
>>
>> Sorry - my mistake. I thought that code had gone into 0.31/fixes but
>> my recollection was wrong.
>>
>> Essentially there looks to be a problem with your display's EDID. Both
>> Qt and MythTV get your display size wrong and calculate an aspect
>> ratio of 1 (and there is another issue flagged that is EDID related).
>>
>> As James said, does it not just work if you set the aspect ratio to
>> 32:9? which I assume is your display's aspect ratio?
>>
>> However, I do expect this ratio
>> to be related to the mythfrontend window size rather than the display
>> size, which is not what other comments seemed to imply.
>>
>> The code that calculates where to place your video on the screen needs
>> both the screen aspect ratio and the pixel aspect ratio. Most modern
>> displays have a pixel aspect ratio of 1 - i.e. square pixels. For
>> older displays, this can only be calculated from the screen dimensions
>> and the resolution.
>>
>> In master/0.32, the new default is to assume a pixel aspect ratio of
>> 1:1, which would in your case just work out at 32:9.
>>
>> If setting the aspect ratio explicitly to 32:9 does not work, then
>> please post another log with that setting in use - as that would
>> suggest a bug.
>>
>> Regards
>> Mark
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