Re: stop "dmesg.boot" from being overwritten on each boot-up

From: Greg 'groggy' Lehey <grog_at_freebsd.org>
Date: Sun, 28 Apr 2024 22:46:27 UTC
On Sunday, 28 April 2024 at 16:42:58 -0400, Gerard E. Seibert wrote:
> I have a problem loading the 1915ms.ko module. I booted up and used the
> "-v" option to get a detailed printout of what was happening. I copied
> hat file to my home directory. I started the system again, but I set
> the 1915ms.ko module to load. As usual, it froze the system. I then
> rebooted into single user and made the necessary corrections. After
> rebooting again, the contents of the dmesg.boot file were overwritten.
>
> I want to get a copy of what happens when the system locks up while
> booting with the i915ms.ko module. Is there any setting I can use to
> stop overwriting that file or perhaps append the output to it?

Not that I know of.  But while you're in single user, you can rename
the file.  It would be better to copy it elsewhere in case the entire
contents of the /var/run directory gets removed.

Have you checked the bug reports for your i915ms problem?

Greg
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