LE 10.0.1 / Rpi4 / No picture after update from LE 10.0.0

Please ssh in and post the output of "pastekodi" and "modetest | pastebinit" while running LE 10.0.1

so long,

Hias

Hi Hias,

the same problem occured to me after updating from 10.0.0 to 10.0.1, so here are my pastes:

http://ix.io/3DWL

http://ix.io/3DWM

The TV connected is an older model, LG 42LD450-ZA (1080p)

Cris_ from your logs it looks like the RPi isn't detecting the AVR - HDMI shows up disconnected in modetest.

Can you try adding drm.debug=0x04 to the end of cmdline.txt?

pastekodi plus modetest outputs from a cold boot (RPi disconnected from power) would be great.

If you don't see the LE splash then ssh in and reboot. Do you see the LE splash now? If yes, please post pastekodi/modetest outputs of that, too.

Also try adding video=HDMI-A-1:1920x1080M@60D (note the "D" at the end) to cmdline.txt. Does this work? Again, pastekodi/modetest outputs would be great.

so long,

Hias

Cris_ according to your logs the drm.debug/video kernel command line parameters weren't active. Did you add them to cmdline.txt in a separate line?

Note that everything in cmdline.txt has to be on a single line, please add these after "quiet", separated by a blank, and redo the tests.

While you're at it it would also be interesting to see logs from LE 10.0.0 with drm.debug=0x04

so long,

Hias

Quote from Cris_

What is the difference between HDMI0 and HDMI1?

You have two HDMI output ports, 0 and 1.

Quote from Cris_

Whats is the difference between 1920x1080M@60 and with 60D? Deinterlacing?

Interlacing = 1080i , Progressive = 1080p. 60 is usually 60Hz or 60fps. No clue what the 'D' stands for.

Quote from Cris_

Whats is the difference between 1920x1080M@60 and with 60D? Deinterlacing?

Is somewhere more information about cmdline.txt?

Quote from cmdline.txt

‘D’ will force the display to be enabled and use digital output. This is useful for outputs that have both analog and digital
signals (e.g. HDMI and DVI-I).

Cris_ your kernel logs, also the one from LE10.0.0, are spammed with HDMI disconnect/connect events.

I highly recommend checking the cabling, reseating the HDMI cable and/or using a different one could do wonders.

so long,

Hias

Hi dev team,

Description of issue:

Since a fresh LE 10.0.1 installation (LibreELEC-RPi4.arm-10.0.1.img) also I am facing the issue with a black screen after the rainbow cube, just I can hear the GUI sound.

Not even adding the video=HDMI-A-1:1280x720M@60D or with different resolution, without "M"/"D" to cmdline.txt no luck.

Other systems Raspbian OS, Retropie, Batocera or LibreELEC up to 10.0.0 no issue.

Hardware:

• old TV: LG 42LK450-ZB (2012), ports HDMI1-3, factory reset
• RPi4B: connected with an original cable to port HDMI0, bootloader EEPROM 2021-04-29, FW 000138A1

How to replicate:

• fresh install LE10.0.1 via balenaEtcher
• add ssh to cmdline.txt
• launch the LibreELEC on RPi4B

Temporary workaround:

On the TV select other HDMI source and return back.

In my case I select e.g. HDMI1 and then HDMI3 -> I get the GUI screen!

NOTE:

• by this way I also see the LE initial after the first boot
• after the RPi4B reboot the black screen is back

• pastekodi
• modetest | pastebinit

Hope it helps

Cris_ my guess would be either the hotplug fixes in the driver or just luck or a combination of both. Kodi doesn't really support display hotplug, the driver now properly detects and handles it though, and if your TV/AVR constantly dis- and re-appears you won't get display from kodi if it started up when the TV was "gone".

BTW: It might be worth checking if a direct connection from RPi4 to the TV works, it could also be that the AVR is doing something odd.

so long,

Hias

yullaw the info from your logs doesn't quite add up, modetest reports 1360x768 mode, according to kodi log it should be 1920x1080. Did you change mode (manually or on playback via whitelist)?

Kodi debug-log would have shown that info, other that everything looks fine to me so not sure why you don't get a picture without manually changing inputs.

Could you give this build a try: https://www.horus.com/~hias/tmp/libr…829-035c5c6.tar - just copy it to the update share and reboot. It contains the latest video driver fixes that haven't made it into 10.0.1.

so long,

Hias