Hi Russell,
As it happens, I just finished bisecting the stable tree yesterday. The
offending patch (459e3a21535ae3c7a9a123650e54f5c882b8fcbf) addresses some gcc-9
warnings. Reverting that patch fixes everything.
I submitted bug 203935 to
bugzilla.kernel.org today.
More observations below,
Cheers ... Duncan.
On Wed, Jun 19, 2019 at 11:16:41PM +1000, luv-main wrote:
On Tuesday, 28 May 2019 4:27:53 PM AEST Duncan Roe via
luv-main wrote:
Following Andrew's exhortations at the last
main meeting, I built 5.1 and
installed it on my laptop.
I usually try to avoid building kernels, compiling a kernel with the same
settings as Debian uses takes too long and changing the settings to a minimal
set that matches what I want to do is more effort than I want. Currently
Debian/Experimental only has 5.0.
I have a customised version of the standard Slackware .config. Running *make
xconfig* on successive kernel revisions keeps it updated. I do keep it under
tight revision control, keeping automatic updates separate from any I do.
I went back to 5.0 and checked what was in
debug.log (which logs
everything). And there was nothing at all! No hint that 5.1 had ever
started - just a 7 minute gap between the last 5.0 shutdown and 5.0
starting.
Did any other log file have anything in that time period?
No
Was networking operational, could you ping it? If so network logging might
work.
Didn't try a ping from another system, that would have been a nice idea.
Did you try configuring your system to disable video mode changes?
No
Serial console might be an option, but not many systems have proper serial
ports nowadays.
I had a console all right. But I couldn't log in.
Have you seen this email before? Please mail me
off-list if so.
I originally sent this on 13th May but didn't see it come back.
It got delivered to me then and was in my lists folder with lots of other
unread mail from months ago. Maybe people just couldn't think of good
suggestions to offer you.
Maybe so. Bit *I* didn't see my own email even though I configured to see it.
Mail to the list owner about that has gone unanswered.
It took me weeks to think of trying a bisect. That required acceptance that the
problem was with the kernel.