smh
Posts: 1
Joined: Wed Jun 17, 2020 2:32 pm

Re: STICKY: Setting up HDMI output when video output is wrong.

Wed Jun 17, 2020 3:01 pm

Raspberry Pi 4 (28 May 2020) NOOBS

I set the overscan to enabled, which I discovered was a mistake for my situation. the 4 raspberries that show up on boot, have the tops barely cut off, but the left side one is cut in half.

I tried editing the config file, and the edits don't take. I've tried editing in the initial setup screen (press shift for setup), the terminal and the desktop gui; I've attempted to edit both as root and as pi. I used vi to edit, ensuring that I saved. I checked before and after reboot to 'see' if my changes 'took'. The updates are always unset by something in the system, and the screen edge remains cut off.

I tried reinstalling - no change.
I tried to reformat and reinstall the baseline to the SD card - BIG mistake, as it is partitioned, and now nothing works, and I'm going to need to buy a new one :(

I have 3 questions:
1) how do I unset the partition to reformat and reload the card?
2) how do I modify the config.txt file so the changes are not overwritten by some security element, and
3) what is the resource that is rejecting my edits without telling me?

I'm not a linux newbie (though by no means a guru), I'm a Raspberry newbie, and this is my first. it's not been a happy experience so far. :(

smh

Schorschi
Posts: 245
Joined: Thu Nov 22, 2012 9:38 pm

Re: STICKY: Setting up HDMI output when video output is wrong.

Wed Jun 17, 2020 3:07 pm

For what it is worth, i have 3 Pi4 devices and they all refuse to see HDMI monitor on boot up randomly presenting the monitor image, when it rarely appears. I have tried TVs, Dell monitors, etc. The issue is core to the Pi4, not a specific monitor or TV from my experience. I have tried enabling the various options in config.txt, nothing seems to fix the problem consistently. Every other Pi model I have, which is many, all work fine with the same monitors and TVs, it is ONLY the Pi4 devices that act up.

Erikblade
Posts: 2
Joined: Wed Jul 22, 2020 10:58 pm

Re: STICKY: Setting up HDMI output when video output is wrong.

Wed Jul 22, 2020 11:06 pm

Hi,
I'm justo begining with a Raspberry Pi 4 and i have a problem with the HDMI configuration.

I have a monitor un wicht the rasp runs without any problem. But i need use diferent monitor un other place.
that monitor does not allow me to select the hdmi input without having anything connected.
I try to select it and then start the rasp but it tells me that no hdmi signal is detected.
I have tried various settings as I have read in the topic but it still does not work.
any orientation? comment that I am totally new to rasp although I have basic knowledge of Linux.
Thanks for your advises

espengler84
Posts: 2
Joined: Sun Sep 06, 2020 4:02 pm
Location: Taunton

Re: STICKY: Setting up HDMI output when video output is wrong.

Sun Sep 06, 2020 4:12 pm

Hello!

Complete newbie here. I recently purchased a Raspberry Pi 4 with a preloaded 256g SD.

I initially had some trouble getting it to pop up on my tv. I have an older HDTV, and it wasn't recognizing the signal. However, as soon as I put it into "safe mode" on config.txt, it showed up fine. There was no sound, so I went into the options folder and put sound through HDMI. Voila.

However - whenever I select ANY ROM, it will get to the controller layout screen - and then immediately go black. My TV tells me there is no signal. I'm assuming that the ROMS may run on a different resolution that doesn't translate? How can I fix this? I'm so close to getting this damn thing to work.

(apology in advance if this is some easily fixed beginner's mistake. I'm shooting in the dark here.)


Update: I went into the resolution menu upon game launch, and went to the "use default video setting for emulator" menu. I went down the list, trying every option. I got a black no signal for EVERY option except for the 720p options. (my tv is a 720p HDTV.) When I selected those options, the game LAUNCHED - and I could hear the audio - but all I got was a flashing green screen, or no screen at all.

willsegatto
Posts: 3
Joined: Tue Oct 20, 2020 5:43 pm

Re: STICKY: Setting up HDMI output when video output is wrong.

Tue Oct 20, 2020 6:07 pm

That's bad. Have you tried plugging into a monitor and another HDMI cable?

steshell
Posts: 2
Joined: Sat Oct 31, 2020 6:27 pm

Re: STICKY: Setting up HDMI output when video output is wrong.

Sat Oct 31, 2020 11:27 pm

As a complete Pi newbie this 'sticky' was invaluable to me when I was having a lot of 'Signal Out of Range' problems.
I was using a HDMI to VGA adapter and my breakthrough came when I realised that the readings I was getting from running “tvservice –m CEA” and “tvservice –m DMT” were, I assume, from the adapter and not from the monitor. If I'd have spent more money buying a HDMI monitor I would have saved myself hours of time but , on the plus side, I've learned a lot trying to sort the problem out.

Warft
Posts: 2
Joined: Tue Nov 03, 2020 1:39 pm

Re: STICKY: Setting up HDMI output when video output is wrong.

Tue Nov 03, 2020 4:43 pm

Hello!
I have RP4 with retropie that works great, but when I try to connect to another monitor via HDMI it shows no signal.
The monitor is a 19" Samsung 933HD.
I have managed to connect by SSH and the results when launching the tvservice commands are the following:

Code: Select all

Group CEA has 4 modes:
           mode 4: 1280x720 @ 60Hz 16:9, clock:74MHz progressive
           mode 16: 1920x1080 @ 60Hz 16:9, clock:148MHz progressive
           mode 95: 3840x2160 @ 30Hz 16:9, clock:297MHz progressive
           mode 97: 3840x2160 @ 60Hz 16:9, clock:594MHz progressive

Code: Select all

Group DMT has 1 modes:
  (prefer) mode 4: 640x480 @ 60Hz 4:3, clock:25MHz progressive
And this is my edid.dat:

Code: Select all

HDMI:EDID version 1.3, 1 extensions, screen size 16x9 cm
HDMI:EDID features - videodef 0x80 !standby !suspend !active off; colour encoding:RGB444|YCbCr422; sRGB is not default colourspace; preferred format is native; does not support GTF
HDMI:EDID found monitor range descriptor tag 0xfd
HDMI:EDID monitor range offsets: V min=0, V max=0, H min=0, H max=0
HDMI:EDID monitor range: vertical is 24-75 Hz, horizontal is 26-81 kHz, max pixel clock is 230 MHz
HDMI:EDID monitor range does not support GTF
HDMI:EDID found monitor name descriptor tag 0xfc
HDMI:EDID monitor name is SyncMaster
HDMI:EDID found preferred CEA detail timing format: 1920x1080p @ 60 Hz (16)
HDMI:EDID found CEA detail timing format: 1280x720p @ 50 Hz (19)
HDMI:EDID established timing I/II bytes are BF EF 80
HDMI:EDID found DMT format: code 4, 640x480p @ 60 Hz in established timing I/II
HDMI:EDID found DMT format: code 5, 640x480p @ 72 Hz in established timing I/II
HDMI:EDID found DMT format: code 6, 640x480p @ 75 Hz in established timing I/II
HDMI:EDID found DMT format: code 8, 800x600p @ 56 Hz in established timing I/II
HDMI:EDID found DMT format: code 9, 800x600p @ 60 Hz in established timing I/II
HDMI:EDID found DMT format: code 10, 800x600p @ 72 Hz in established timing I/II
HDMI:EDID found DMT format: code 11, 800x600p @ 75 Hz in established timing I/II
HDMI:EDID found DMT format: code 16, 1024x768p @ 60 Hz in established timing I/II
HDMI:EDID found DMT format: code 17, 1024x768p @ 70 Hz in established timing I/II
HDMI:EDID found DMT format: code 18, 1024x768p @ 75 Hz in established timing I/II
HDMI:EDID found DMT format: code 36, 1280x1024p @ 75 Hz in established timing I/II
HDMI:EDID standard timings block x 8: 0x714F 8100 8140 8180 9500 950F A940 B300
HDMI:EDID found DMT format: code 21, 1152x864p @ 75 Hz (4:3) in standard timing 0
HDMI:EDID found DMT format: code 28, 1280x800p @ 60 Hz (16:10) in standard timing 1
HDMI:EDID found DMT format: code 32, 1280x960p @ 60 Hz (4:3) in standard timing 2
HDMI:EDID found DMT format: code 35, 1280x1024p @ 60 Hz (5:4) in standard timing 3
HDMI:EDID found DMT format: code 47, 1440x900p @ 60 Hz (16:10) in standard timing 4
HDMI:EDID found DMT format: code 48, 1440x900p @ 75 Hz (16:10) in standard timing 5
HDMI:EDID found DMT format: code 51, 1600x1200p @ 60 Hz (4:3) in standard timing 6
HDMI:EDID found DMT format: code 58, 1680x1050p @ 60 Hz (16:10) in standard timing 7
HDMI:EDID parsing v3 CEA extension 0
HDMI:EDID monitor support - underscan IT formats:yes, basic audio:yes, yuv444:yes, yuv422:yes, #native DTD:1
HDMI:EDID found CEA detail timing format: 1920x1080i @ 50 Hz (20)
HDMI:EDID found CEA detail timing format: 1920x1080i @ 60 Hz (5)
HDMI:EDID found CEA detail timing format: 1280x720p @ 60 Hz (4)
HDMI:EDID found CEA detail timing format: 720x576p @ 50 Hz (17)
HDMI:EDID found CEA detail timing format: 720x480p @ 60 Hz (2)
HDMI:EDID found CEA format: code 19, 1280x720p @ 50Hz (native)
HDMI:EDID found CEA format: code 4, 1280x720p @ 60Hz
HDMI:EDID found CEA format: code 5, 1920x1080i @ 60Hz
HDMI:EDID found CEA format: code 20, 1920x1080i @ 50Hz
HDMI:EDID found CEA format: code 3, 720x480p @ 60Hz
HDMI:EDID found CEA format: code 18, 720x576p @ 50Hz
HDMI:EDID found CEA format: code 16, 1920x1080p @ 60Hz
HDMI:EDID found CEA format: code 31, 1920x1080p @ 50Hz
HDMI:EDID found CEA format: code 32, 1920x1080p @ 24Hz
HDMI:EDID found CEA format: code 33, 1920x1080p @ 25Hz
HDMI:EDID found CEA format: code 34, 1920x1080p @ 30Hz
HDMI:EDID found audio format 2 channels PCM, sample rate: 32|44|48 kHz, sample size: 16|20|24 bits
HDMI:EDID found Video Capability DB length 2
HDMI:EDID video capability: CE:3 IT:3 PT:0 QS:0
HDMI:EDID found HDMI VSDB length 7
HDMI:EDID HDMI VSDB has physical address 1.0.0.0
HDMI:EDID HDMI VSDB supports AI:yes, dual link DVI:no
HDMI:EDID HDMI VSDB deep colour support - 48-bit:no 36-bit:yes 30-bit:yes DC_yuv444:yes
HDMI:EDID HDMI VSDB max TMDS clock 225 MHz
HDMI:EDID HDMI VSDB has no latency information
HDMI:EDID adding mandatory support for CEA (1) 640x480p @ 60Hz
HDMI:EDID filtering formats with pixel clock unlimited MHz or h. blanking unlimited
HDMI:EDID best score mode initialised to CEA (1) 640x480p @ 60 Hz with pixel clock 25 MHz (score 0)
HDMI:EDID best score mode is now CEA (1) 640x480p @ 60 Hz with pixel clock 25 MHz (score 61864)
HDMI:EDID best score mode is now CEA (2) 720x480p @ 60 Hz with pixel clock 27 MHz (score 2066472)
HDMI:EDID CEA mode (3) 720x480p @ 60 Hz with pixel clock 27 MHz has a score of 66472
HDMI:EDID best score mode is now CEA (4) 1280x720p @ 60 Hz with pixel clock 74 MHz (score 3135592)
HDMI:EDID DMT mode (4) 640x480p @ 60 Hz with pixel clock 25 MHz has a score of 18432
HDMI:EDID best score mode is now CEA (5) 1920x1080i @ 60 Hz with pixel clock 74 MHz (score 3773832)
HDMI:EDID DMT mode (5) 640x480p @ 72 Hz with pixel clock 31 MHz has a score of 5529
HDMI:EDID DMT mode (6) 640x480p @ 75 Hz with pixel clock 31 MHz has a score of 5760
HDMI:EDID DMT mode (8) 800x600p @ 56 Hz with pixel clock 36 MHz has a score of 26880
HDMI:EDID DMT mode (9) 800x600p @ 60 Hz with pixel clock 40 MHz has a score of 28800
HDMI:EDID DMT mode (10) 800x600p @ 72 Hz with pixel clock 50 MHz has a score of 8640
HDMI:EDID DMT mode (11) 800x600p @ 75 Hz with pixel clock 49 MHz has a score of 9000
HDMI:EDID best score mode is now CEA (16) 1920x1080p @ 60 Hz with pixel clock 148 MHz (score 5398248)
HDMI:EDID DMT mode (16) 1024x768p @ 60 Hz with pixel clock 65 MHz has a score of 47185
HDMI:EDID CEA mode (17) 720x576p @ 50 Hz with pixel clock 27 MHz has a score of 2566472
HDMI:EDID DMT mode (17) 1024x768p @ 70 Hz with pixel clock 75 MHz has a score of 13762
HDMI:EDID CEA mode (18) 720x576p @ 50 Hz with pixel clock 27 MHz has a score of 66472
HDMI:EDID DMT mode (18) 1024x768p @ 75 Hz with pixel clock 78 MHz has a score of 14745
HDMI:EDID CEA mode (19) 1280x720p @ 50 Hz with pixel clock 74 MHz has a score of 4663240
HDMI:EDID CEA mode (20) 1920x1080i @ 50 Hz with pixel clock 74 MHz has a score of 4232360
HDMI:EDID DMT mode (21) 1152x864p @ 75 Hz with pixel clock 108 MHz has a score of 43662
HDMI:EDID DMT mode (28) 1280x800p @ 60 Hz with pixel clock 83 MHz has a score of 86440
HDMI:EDID CEA mode (31) 1920x1080p @ 50 Hz with pixel clock 148 MHz has a score of 232360
HDMI:EDID CEA mode (32) 1920x1080p @ 24 Hz with pixel clock 74 MHz has a score of 124532
HDMI:EDID DMT mode (32) 1280x960p @ 60 Hz with pixel clock 108 MHz has a score of 98728
HDMI:EDID CEA mode (33) 1920x1080p @ 25 Hz with pixel clock 74 MHz has a score of 128680
HDMI:EDID CEA mode (34) 1920x1080p @ 30 Hz with pixel clock 74 MHz has a score of 149416
HDMI:EDID DMT mode (35) 1280x1024p @ 60 Hz with pixel clock 108 MHz has a score of 103643
HDMI:EDID DMT mode (36) 1280x1024p @ 75 Hz with pixel clock 135 MHz has a score of 24576
HDMI:EDID DMT mode (47) 1440x900p @ 60 Hz with pixel clock 106 MHz has a score of 102760
HDMI:EDID DMT mode (48) 1440x900p @ 75 Hz with pixel clock 136 MHz has a score of 49300
HDMI:EDID DMT mode (51) 1600x1200p @ 60 Hz with pixel clock 162 MHz has a score of 140200
HDMI:EDID DMT mode (58) 1680x1050p @ 60 Hz with pixel clock 146 MHz has a score of 130840
HDMI0:EDID preferred mode remained as CEA (16) 1920x1080p @ 60 Hz with pixel clock 148 MHz
HDMI:EDID has HDMI support and audio support
edidparser exited with code 0

I have tried many setting in the config.txt file, with no luck.
Can you help me?
Thank you

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