Messages in this thread | | | From | Keith Owens <> | Subject | Re: Linux 2.4.2-ac21 | Date | Fri, 23 Mar 2001 12:35:03 +1100 |
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On Fri, 23 Mar 2001 00:02:54 +0100, Frank de Lange <frank@unternet.org> wrote: >Linux 2.4.2-ac21 does not like my box, or the other way around: > >loading the agpgart module (MGA G400 AGP) -> system hangs >loading the SCSI module (53c875) -> system hangs > >In both cases, the magic SysRq sequence does not work, but it is still possible >to ping the box from the outside. Connecting to it (ssh) does not work, >however. I backed out both the SCSI driver patches as well as the agpgart >patches, but this did not fix the symptoms. Looks more like a module-loading >related issue, but I have not found it yet. > >All this on an SMP (Abit BP6) box by the way...
Activate the nmi watchdog with nmi_watchdog=1 in the boot parameters[*]. That will trip after 5 seconds and point to where it is hanging. If the nmi watchdog alone does not give enough data, add the kdb patch (with nmi watchdog on) and start debugging. http://oss.sgi.com/projects/kdb/download/ix86/, the -ac20 patch should fit -ac21 as well.
Am I the only person who is annoyed that nmi watchdog is now off by default and the only way to activate it is by a boot parameter? You cannot even patch the kernel to build a version that has nmi watchdog on because the startup code runs out of the __setup routine, no boot parameter, no watchdog.
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