Noah Meyerhans <noahm@debian.org> writes: > On Tue, Jan 13, 2009 at 04:24:03PM -0600, Michael Ekstrand wrote: >> > I have tried to get a netconsole running, but so far have had no >> > success. If I can get a crash with debug=1 this afternoon, I'll post >> > any additional info it yields; otherwise, I'll try either the updated >> > firmware or the snapshot build and see if I can last tomorrow without >> > crashing. >> >> I have had a crash with debug=1, but it did not have any additional info >> in /var/log/messages. > > That's not surprising. The kernel is likely dead before it gets to > write the messages out to the file. You'll really need to set up > netconsole... I set up netconsole again today using the Ubuntu directions[1], and from the look of the eth0 traffic monitor in my panel (with the default route using it removed, so no normal traffic should have been routed over it), I think that netconsole was actually sending console messages. Two problems, however: 1. The machine never crashed today. Either it was a good day, or replacing 'quiet' with 'debug' in the kernel command line at boot suddenly caused everything to work. 2. No kernel log messages showed up at the receiving end. Given the observation above, I am guessing this is due to my department's routing and/or VLAN configuration. The wired IP address I get is on a different subnet (in the 172 private block) than the workstation on my desk (internet-routable). I followed the directions in the Ubuntu HOWTO to provide the MAC address of the default gateway for my wired IP, but still didn't get anything to show up on the listening host. I don't have another machine on the user-machine network segment to listen with. I'm not sure, therefore, how I can go about getting a error trace. This laptop does not have a serial port, and the only wireless network I have problems on is the one at school, so I don't have the option of testing for problems with access to a wired network I can control. - Michael 1. https://wiki.edubuntu.org/KernelTeam/Netconsole -- mouse, n: A device for pointing at the xterm in which you want to type. Confused by the strange files? I cryptographically sign my messages. For more information see <http://www.elehack.net/resources/gpg>.
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