HDMI CEC not working in Rsapberry pi 4b after changing the config file to (dtoverlay=vc4-fkms-v3d)

Ajay · March 28, 2023 at 7:36 AM

Hi guys As mentioned in the forum answers (dtoverlay=vc4-fkms-v3d.) did work for my raspberry pi 4b while fixing the blue screen issue after reboot ,however my HDMI CEC isn't working post changing to (fkms). Any help over this would be appreciated,i am using librelec 10 i.e kodi19.5 matrix

**HiassofT** · March 28, 2023 at 4:30 PM

This is expected. Don't fiddle around with distroconfig.txt and stick to the default vc4-kms-v3d dtoverlay.

so long,

Hias

Ajay · March 30, 2023 at 5:06 AM

Quote from HiassofT

This is expected. Don't fiddle around with distroconfig.txt and stick to the default vc4-kms-v3d dtoverlay.
so long,
Hias

If i didn't change from kms to fkms , after reboot i was facing blue screen ,No signal issue on my TV

**HiassofT** · March 30, 2023 at 10:48 AM

No signal usually means hotplug decect not working because of a bad HDMI cable, bad HDMI connection (eg Argon one cases with notoriously broken HDMI adapter PCB) or monitors/TVs/AVRs not adhering to standards.

Do a clean installation of LE11.0.1 and add vc4.force_hotplug=1 to the end of /flash/cmdline.txt (right after "quiet", everything has to be on a single line) to workaround that.

so long,

Hias