Hello Oliver, >> First the display is going black, then after 3-5 seconds the systems >> shuts down (power off) or is resetting (Bios screen appears). I don't >> find anything in the logs after the next boot. This might be because of >> the hard and fast crash (no sync to the disk). > > This may be the classical triple fault response. > >> This has always happend in the past when 3G-Modem is activated with the >> switch at the laptop (this is a switch like a WLAN kill switch) and >> loaded option modul. My first opinion was, that this has to do with the >> error logs from the option module but we now together found out that >> this logs comes from autosuspend mode and has nothing to do with the >> crashes. > > The entries in your log come from autosuspend, but they don't indicate > errors in the strict sense. They mean that communication with the device > stops because it is being autosuspended. > > The only indication we have that autosuspend is to blame is your report > that compiling without CONFIG_PM makes the problem go away. No, i had sadly further crashes with this. Only the messages disappears. (At that time, i wasn't aware of that this comes from the enabled autosuspend option) >> What about this messages in dmesg, are this only warnings or maybe the >> cause of some problems? > > I don't know. Please report this to the iommu maintainer. This is a harmless error, i found a lot of articles with google about that. Oliver, i try my best to get around that behaviour ;-). What I have seen today is that all crashes appears in battery mode (not with an power supply), and very curious only when the modem is running in 3G/UMTS-Mode, in GPRS/EDGE mode it doesn't crash. I will disable tomorrow some options in the pm-utils and look how that helps. Regards, Patrick -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
