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Posts: 100 | Thanked: 37 times | Joined on Feb 2010
#1874
Originally Posted by majaczek View Post
hey i experienced semi-random crashes during usb-networking
it happens if much of data is transferred at once, but not everytime.

i experienced it with kp48 too, but in kp49 it seems to trigger more frequent (or at least i wasn't so crazy to transfer nnn MB data at once, but i have done now)

to trigger that you have to transfer more than 100mb data in one data stream, like massive app install or huge up/download, it happens when one multifile transfer too.

i haven't checked but it may affect general networking not only usb ones (i have no wifi in home, so i have to use usb networking or to hunt for some not secured wifi in another place)

if it seems unconnected with kernel power, then sorry, but i feel i may have found a bug in KP, but if its really not it please point to where i have to search help.

notice that it doesn't happen when transferring huge amount of data while normal operation (ie. much of small chunks of data with many multi-milisecond time-breaks)

EDIT: this time i tried to transfer 500MB at once and 250MB at once, both failed once, and one recovered from filepart succesfully and one not
I've got a similar issue on kp48, haven't tried kp49 yet.
I use Qt Mobile Hotspot for routing internet through USB. Some weeks ago, the reboot occurred many times when my N900 was downloading data at once through the USB connection, the N900 froze and rebooted although downloading only some megs. I reflashed the N900 before that. I can use WinSCP without a problem.

I've seen it a couple of times when a website starts to load on PC, the N900 reboots. But it has never rebooted when downloading files even larger than 500MB on PC. Neither has it rebooted when listening to internet radio on N900. It must be the USB networking causing it. When it does reboot, the boot reason is always sw_rst. I didn't get it to reboot on a Wifi network.

I don't know if this is related, but at the time I have reflashed the N900 and installed kp48 with FAM. Somehow the BFS kernel got installed too since I saw it as the first entry in Multiboot. I had no idea what it was and, of course, booted into the kernel. I was then amazed how can it be so blazing fast without overclock. Being doubtful I checked "kernel-config show" and what the hell, it was at 1.15GHz. I loaded my custom 805MHz profile and after some minutes the N900 rebooted. Then it was back at 1.15GHz and the boot reason was 32wd_to. I immediately reflashed the device and installed kp48 without any problem. I know that's strange. I never wanted to overclock higher than 805MHz. Too bad I didn't take a screenshot of the voltages. I have a feeling the reboot problem started after that, although I may be wrong. I was just worried that the extreme overclock would've caused it. This guy seems to have a similar problem: http://talk.maemo.org/showthread.php?t=79350

Ok so I'm not alone with this USB networking problem, what can be done?

majaczek, does your N900 still reboot on its own?

Any help is appreciated.

Last edited by megaexer; 2011-10-26 at 17:05.