Hello,
I recently set up 6 Raspberry Pi 4Bs as media players in a museum, and am having issues regarding booting every morning. The red light is solid with no green light. I have to manually unplug and plug back in the RPi daily to make it boot (using cron job for shutdown before unplugging). Once plugged back in the RPi runs continuously without any issues. If I could keep them running 24/7 I would, but I unfortunately have run them in accordance with the museum's light schedule.
The room they're installed in has its power switched off every evening at close and switched on when security arrives in the morning. I am using the official 5.1V 3A power supply from Raspberry Pi connected directly to the USB-C port. Nothing is plugged into the RPi besides one HDMI output. I also have a cron job running scheduled shutdowns daily before the power is switched off, to save the SD cards. I've tried introducing outlet timers to control startup in the mornings, and that is helping with a few of the setups, but others that are programmed exactly the same with the same cables are still experiencing boot failure. And those that do boot correctly still intermittently fail to boot. I've tried reflashing the SD cards with fresh images but that doesn't change anything.
What's really strange is that when I reboot the RPi from command line or desktop start menu, I have zero issues booting. Success on every attempt. It seems that it's only when power is switched on externally rather than being plugged in. I've done a lot of searching through the forums and found that folks are having similar symptoms caused by an undervoltage lockout, leading to boot failure and a solid red light until the Pi power is physically reconnected. It seems like insufficient power adapters were the cause in their cases, but I lack the testing equipment to check voltage rise time, so I'm working off of assumptions based on similar symptoms.
I'm thinking about ordering the 27W official adapter to test in place of the smaller AC adapter that came with it (still official RPi). Do you all think this would solve the boot failure issue?
I recently set up 6 Raspberry Pi 4Bs as media players in a museum, and am having issues regarding booting every morning. The red light is solid with no green light. I have to manually unplug and plug back in the RPi daily to make it boot (using cron job for shutdown before unplugging). Once plugged back in the RPi runs continuously without any issues. If I could keep them running 24/7 I would, but I unfortunately have run them in accordance with the museum's light schedule.
The room they're installed in has its power switched off every evening at close and switched on when security arrives in the morning. I am using the official 5.1V 3A power supply from Raspberry Pi connected directly to the USB-C port. Nothing is plugged into the RPi besides one HDMI output. I also have a cron job running scheduled shutdowns daily before the power is switched off, to save the SD cards. I've tried introducing outlet timers to control startup in the mornings, and that is helping with a few of the setups, but others that are programmed exactly the same with the same cables are still experiencing boot failure. And those that do boot correctly still intermittently fail to boot. I've tried reflashing the SD cards with fresh images but that doesn't change anything.
What's really strange is that when I reboot the RPi from command line or desktop start menu, I have zero issues booting. Success on every attempt. It seems that it's only when power is switched on externally rather than being plugged in. I've done a lot of searching through the forums and found that folks are having similar symptoms caused by an undervoltage lockout, leading to boot failure and a solid red light until the Pi power is physically reconnected. It seems like insufficient power adapters were the cause in their cases, but I lack the testing equipment to check voltage rise time, so I'm working off of assumptions based on similar symptoms.
I'm thinking about ordering the 27W official adapter to test in place of the smaller AC adapter that came with it (still official RPi). Do you all think this would solve the boot failure issue?
Statistics: Posted by lukeown — Wed Aug 07, 2024 3:30 pm — Replies 0 — Views 20