Raspberry Pi Forums

Posted: **Thu Sep 19, 2019 1:50 am**

Hi all,

I have a raspberry pi 4 model B (2GB ram) which I've been using with Raspbian and openELEC. It works great on my computer monitor and my Panasonic TV, but it doesn't seem to work well with my Samsung UA32F4000AM TV. I can get it to display the openELEC splash screen by setting

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hdmi_safe=1

in config.txt but after the splash screen the screen goes blank and I get "signal not found" again. Also the splash screen does not look very good in this mode since it is a low resolution. I've tried experimenting with config_hdmi_boost but it doesn't seem to make a difference.

btw I'm using the official raspberry pi micro hdmi to hdmi cable, which is working fine on my monitor and other TV

Has anyone used this model TV before? Any recommendations? thanks

Posted: **Thu Sep 19, 2019 9:12 am**

tried a bit more, raspbian fully boots up using hdmi_safe=1 but it is not stable, after a while I lost signal.

Btw I forgot to say, the TV is fully functional with other devices such as an Xbox

Posted: **Tue Sep 24, 2019 3:02 pm**

Google says that the Samsung UA32F4000AM has a native resolution of 1366x768.
There are a few quirks being ironed out with that specific resolution at the moment.

You can force the resolution in the console, but annoyingly X goes and ignores anything set up there. If you can ssh in, then running

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DISPLAY=:0 xrandr --output HDMI-1 --mode 1280x720

should reset the mode to 720p.

If you can dump the display EDID and post it somewhere accessible then it would be useful to enable us to confirm the above.
/sys/class/drm/card1-HDMI-A-1/edid is the file in question, but it's binary so using base64 or similar is the easiest to quote it as text here. eg

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pi@raspberrypi:~ $ base64 /sys/class/drm/card1-HDMI-A-1/edid
AP///////wAQrOhAUzIyMC0aAQOANR546u6Vo1RMmSYPUFSlSwBxT4GAqUDRwAEBAQEBAQEBAjqA
GHE4LUBYLEUADyghAAAeAAAA/wA5TTM0VDZCQjAyMlMKAAAA/ABERUxMIFUyNDE3SAogAAAA/QAy
Sx5TEQAKICAgICAgAaMCAybxT5AFBAMCBxYBBhESFRMUHyMJBwdlAwwAEACDAQAA4wUAAAI6gBhx
OC1AWCxFAA8oIQAAHgEdgBhxHBYgWCwlAA8oIQAAngEdAHJR0B4gbihVAA8oIQAAHowK0Iog4C0Q
ED6WAA8oIQAAGAAAAAAAAAAAAAAAAAAAAAAAGQ==

Posted: **Thu Jan 02, 2020 9:04 pm**

Hi,

had a similar problem. I bought a all-in-bundle with a cables and case.

The problem was the case was too sick that the HDMI cable could not really snap in 100%.
When having the case opened the HDMI Signal was transferred to the TV without any problems!

Posted: **Thu Jan 02, 2020 11:45 pm**

altenbucher wrote: ↑
Thu Jan 02, 2020 9:04 pm
Hi,

had a similar problem. I bought a all-in-bundle with a cables and case.

The problem was the case was too sick that the HDMI cable could not really snap in 100%.
When having the case opened the HDMI Signal was transferred to the TV without any problems!

Not similar. Completely different.

Raspberry Pi Forums

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