[mythtv-users] Skewed text and video display on widescreen 5120x1440
Alain
mythuser at alain.homeunix.org
Mon Jan 11 18:07:34 UTC 2021
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.
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.
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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