On Sat, Nov 13, 2010 at 2:08 PM, Robert Watson <rwatson_at_freebsd.org> wrote: > > On Sat, 13 Nov 2010, Alexander Best wrote: > >>>> i tried detaching and attaching my keyboard after chromium crashed my >>>> system and the lights of the keyboard didn't even went on. so in fact >>>> everything crashed and not just X. >>> >>> If I said it unclear, let me repeat, the usermode crash dump you got >>> probably has nothing common with the kernel issue. >> >> oh sorry. indeed i misunderstood you there. well i guess this is the >> problem most regular users have. we don't own any serial/firewire consoles. >> all i can offer is to add kernel OPTIONS. however none of them seem to be >> able to prevent the lock up and instead letting me enter the debugger or >> trigger a kernel core dump. >> >> i even have watchdog running, but without any sucess. i guess all i can >> hope for is that maybe at some point a kernel dump does make it to disk. > > Do you have a second box you can run X11 on, and SSH into the box that will > run Chromium? If it is really Chromium triggering the crash, this might > allow you to access the console when it crashes. However, if it's Chromium > triggering an X11-related crash, it might well not. (Also, it might well > not because of timing differences, but it is worth a try). > > Another thing to consider is starting Chromium when switched to a text > virtual console from X11, which would leave you in text mode for DDB, or at > least let you see something interesting on the console. > > If regular crashdumps appear unreliable, try setting up a textdump with an > automatic reboot, that might provde more reliable (small chance, but it > could). Isn't there also DEADLKRES that might be helpful in this case (if Alex is really dealing with a livelock in the kernel)...? Thanks, -GarrettReceived on Sat Nov 13 2010 - 21:11:39 UTC
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