Hey folks. I recently bought a cheap ebay car charger for my N900, and i noticed that whenever i attempt to listen to music through my car stereo, the signal is great until i plug in the charger. The signal almost completely dies away and the noise gets worse - or seems to.
At first i thought it was the car charger, as that was the first time i noticed. But today i tried it with my home stereo and the Nokia AC charger (australian edition) and the same thing happened. In fact, the problem remained after i unplugged it. Which was a bit worrying. But i uninstalled fm rds notify and rebooted, and it came good again - and now once again the signal dies away when the charger is plugged in but returns to normal when it's removed.
I don't know if fm-rds-notify is responsible for the problem latching like that for sure, though. Also: When the charger isn't plugged in to the wall nothing happens.
I'm running the power kernel at the moment, though it happened on the nokia kernel too if i remember. Everything else on the phone works fine (built in speakers, headphone output, other hardware like gps, etc) as far as i can tell at least.
Has anyone had this problem? It's almost like the radio output power is being set to minimum when charging, which is backwards!
When you charge the phone with the standard FMTX you will get a major signal power drop. This is something Nokia implemented(maybe for overloading the FMTX Chip?)
I prefer the usage of the modified FMTXD File because it will stay at an constant powerlevel. when you use FMBoost you will need to activate it everytime you put a charger in the N900.
I was wondering about the fm boost thing. Thanks for that! With pr1.3 my phone's battery seems to last ages, so losing extra power on the drive to work won't be a big deal.