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+--- Thread: Moode 4.2 Problem with 5" HDMI screen (/showthread.php?tid=311)
Moode 4.2 Problem with 5" HDMI screen - seta_vn - 07-16-2018
Hi,
i just updated to moode 4.2 and i encountered a problem with my old 5" 800x600 tft HDMI screen. This is not a problem with Moode 4.1, i have activated both Local UI & Touch Screen but the HDMI screen still show only a black screen. I also have added these following codes into the config.txt:
# Uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
hdmi_drive=2
hdmi_group=2
hdmi_mode=1
hdmi_mode=87
hdmi_cvt 800 480 60 6 0 0 0
RE: Moode 4.2 Problem with 5" HDMI screen - Tim Curtis - 07-16-2018
You could try to get some information from the tvservice util. moOde uses the -p and -o args to turn ON/OFF the HDMI port.
Code:
pi@rp5:~ $ tvservice --help
Usage: tvservice [OPTION]...
-p, --preferred Power on HDMI with preferred settings
-e, --explicit="GROUP MODE DRIVE" Power on HDMI with explicit GROUP (CEA, DMT, CEA_3D_SBS, CEA_3D_TB, CEA_3D_FP, CEA_3D_FS)
MODE (see --modes) and DRIVE (HDMI, DVI)
-t, --ntsc Use NTSC frequency for HDMI mode (e.g. 59.94Hz rather than 60Hz)
-c, --sdtvon="MODE ASPECT [P]" Power on SDTV with MODE (PAL or NTSC) and ASPECT (4:3 14:9 or 16:9) Add P for progressive
-o, --off Power off the display
-m, --modes=GROUP Get supported modes for GROUP (CEA, DMT)
-M, --monitor Monitor HDMI events
-s, --status Get HDMI status
-a, --audio Get supported audio information
-d, --dumpedid <filename> Dump EDID information to file
-j, --json Use JSON format for --modes output
-n, --name Print the device ID from EDID
-h, --help Print this information-Tim
RE: Moode 4.2 Problem with 5" HDMI screen - seta_vn - 07-17-2018
I have tried those commands but the screen is still black, in the old moode 4.1 all i have to do is enable the Local UI display function..
RE: Moode 4.2 Problem with 5" HDMI screen - Tim Curtis - 07-17-2018
Post output from tvservice -s and I'll have a look.
-Tim
RE: Moode 4.2 Problem with 5" HDMI screen - seta_vn - 07-17-2018
pi@moode:~ $ tvservice --status
state 0x12000a [HDMI DMT (87) RGB full 15:9], 800x480 @ 59.00Hz, progressive
This is all i got with the status command
RE: Moode 4.2 Problem with 5" HDMI screen - seta_vn - 07-18-2018
Also, i don't know if this is a power supply issue introduce with the new Raspbian Stretch, after the installation of stretch it show an under voltage warning (but no red light on Pi) but after moode installed it disappear. This is very strange as i never got this warning before with moode 4.1 or Volumio.
I will try to look at the power supply board to see if this is the root of the problem.
RE: Moode 4.2 Problem with 5" HDMI screen - seta_vn - 07-18-2018
I have changed to a new PSU board but the screen is still black right after the terminal boot into Moode.
RE: Moode 4.2 Problem with 5" HDMI screen - seta_vn - 07-21-2018
(07-17-2018, 01:11 AM)Tim Curtis Wrote: Post output from tvservice -s and I'll have a look.
-Tim
Hi Tim, you got time to look into this problem? if not is it possible to downgrade to 4.1
RE: Moode 4.2 Problem with 5" HDMI screen - Tim Curtis - 07-21-2018
They were no obvious errors in the status output.
I would need one of these screens in order to attempt troubleshooting.
RE: Moode 4.2 Problem with 5" HDMI screen - TheOldPresbyope - 07-21-2018
(07-17-2018, 12:32 PM)seta_vn Wrote: pi@moode:~ $ tvservice --status
state 0x12000a [HDMI DMT (87) RGB full 15:9], 800x480 @ 59.00Hz, progressive
This is all i got with the status command
@seta_vn
I wonder if tvservice is just reporting back the values set in your config.txt file.
Have a look at https://elinux.org/RPiconfig#Video, especially in the section titled "Which values are valid for my monitor?"
Regards,
Kent