Originally Posted by Heiligkuh
I think you guys may be on to something suspecting the data connection having something to do with the data corruption. I have been running Not So Super Froyo on a Kaiser for the past 4 months or so and noticed something. As with everyone else I have suffered with the corruption of the data partition on NAND every couple of days.
I switched to Clemsyn's 188.8.131.52 kernel from post 61 a couple months ago and it was better but still corrupted the data partition a little more often than I like although I learned to live with it by backing up important info regularly.
Anyway, recently I was able to get my phone to go a whole 12 days without corruption by turning off background data and disabling backup my data in privacy settings. I always disable the cellular data connection because the sim card I use does not have a data plan (company phone).
I'm thinking maybe Android is trying to do backups or send data in the background when there is no data connection and it is corrupting the data partition somehow.
It may be related to the problems we have with this kernel not wanting to wake up from standby at times and requiring a reset.
I did notice that with background data and automatic backups disabled the phone would recover from a lockup with little if any corruption. Over the 12 days it ran without corruption I would say I rebooted the phone on average twice a day due to lockups.
Before this a reboot would almost certainly mean loss of data if not total corruption of the data partition.
Anyone else notice that the Kaiser tends to lock up more on cloudy/rainy days or when you are in an area where cell coverage is poor, especially if you use GPS?
How about issues with bluetooth especially when disconnecting and re-connecting?
Does turning bluetooth on/off mess with your WiFi connection?
At any rate keep up the good work, you guys have done a great job breathing new life into the old Kaiser.
Data corruption is because of a buggy NAND driver, not because of something in Android. We know of the issue, we just don't have spare phones to break to attempt fixing the NAND driver. Also we've been working on temporary work arounds to help with data corruption (ECC checking, filesystem ECC checking, etc), but so far they've yielded minimal help because the actual NAND driver is not reading/writing data properly, even though it thinks
As far as everything else. I believe is just coincidence, as the kernels are still buggy, and there will be crashes, so the fact that it "crashes more on cloudy/rainy days" is just superstition.
Bluetooth, at least with my kernel is because the phone sleeps it shuts EVERYTHING down including Bluetooth when it's suppose to stay on. Like I said, most of the issues we are aware of, and we are fixing them, and the only one I believe won't be fixed anytime soon is the NAND driver as it's buggy, and anytime one of us attempts to fix, we corrupt our NAND chips to the point our phone's are not even usable.
Kernel: Custom Compiled 2.6.32 w/ EXT4 Support
Build: Depends on the day
iPhone 3G - Jailbreak
iDroid: Pepparkaka 11.04 (Android 2.3.3)