大佬们求助！树莓派5安装了LibreELEC必须先开电视再开机才显示

dd

电视不太老的话，应该支持 CEC，只要在 libreelec 里面把 CEC 支持打开就行了，这样树莓派启动的时候，会自动打开电视。
To ensure the TV turns on when LibreELEC (LE) boots, you need to enable CEC (Consumer Electronics Control) in the LE settings and potentially adjust some settings on your TV. CEC allows devices connected via HDMI to communicate and control each other.
Here's a breakdown of how to achieve this:1. Enable CEC in LibreELEC:
Navigate to Settings > System > Input > Peripherals > CEC Adapter.
Enable the CEC adapter if it's not already.
Look for options like "Switch source to this device on startup" and set it to "On" or "Enabled".
Also, check if there are options to "Power on devices during startup" and select the appropriate devices (your TV).
If you're experiencing issues with the TV turning on after LE is already running, you may need to configure the CEC settings to ensure the TV is powered on before LE starts or to store EDID data locally.
This video demonstrates the initial setup process for an LG TV, including language selection, internet connection, and personalization, which are relevant to understanding how CEC functions in LibreELEC:

2. Check TV Settings:
Many TVs have a CEC or similar feature (e.g., VIERA Link on Panasonic TVs) that needs to be enabled for this to work correctly.
Consult your TV's manual to find the CEC or related settings and enable them.
Some TVs may have specific options for which devices they control during startup or shutdown.
3. Potential Issues and Troubleshooting:
HDMI Cable Quality:If you're experiencing issues, try a different HDMI cable, especially if it's an older one. Newer standards like HDMI 2.0/2.1 offer better shielding.
Interference:Electromagnetic interference can sometimes cause wake-up issues. If you suspect this, try a different HDMI cable or move other devices away from the cable.
EDID:If your TV and LE are having trouble communicating the EDID (Extended Display Identification Data), you may need to store the EDID data locally in LE. You can use the command getedid create in LE to do this.
Powering on too late:If your TV is not powering on when LE boots, it might be due to LE starting before the TV is ready. You may need to adjust the timing of when LE sends the power-on signal, or ensure the TV is ready before LE boots (perhaps by powering it on first).
Powering on too often:If your TV is turning on and off repeatedly, you may need to adjust the settings in LE or on your TV to prevent this, such as disabling CEC control or adjusting how the TV reacts when it receives a power-off signal.