Re: ThinkPad - suspend-to-RAM intel-x86 issues and tests

["David H. Gutteridge" <david%gutteridge.ca@localhost>]

On Fri, 2018-11-23 at 21:42 +0000, David Brownlee wrote:
> Another couple of data points in case it helps
> 
> Tested on Thinkpad T420s and T530 with NetBSD/amd64 - both have
> similar behaviour
> 
> 8.99.25 Single user:
> - Suspends and seems to resume but hangs on first disk access "wd0a:
> device timeout reading fsbn ..."

Yes, I get that too. pgoyette@ suggested I follow up with jdolecek@
about it, but I haven't had time yet to look for more details. There
are a number of PRs that jdolecek@ was working on fixing that
reference "clearing WDCTL_RST failed for drive" in the dmesg. In my
case, I get that error on both 8.0_STABLE and 8.99.26 (after his
latest changes), but it seems like it's a red herring or there's more
to it, because 8 still resumes reliably regardless of that warning,
while HEAD behaves as you've seen. I just keep getting continuous
output with "wd0a: device timeout writing fsbn X of X..."

> netbsd-8 Single user:
> - Suspend (hw.acpi.sleep.state=3) and resume appears to work reliably
> many times in a row
> - Booting multi user after suspend/resume: wireless iwn0 does not
> appear to work "iwn0: could not load firmware .text section"

I see that too. I haven't looked into it yet, but wondered if it was
as simple as forcing it to reload its firmware after resumption.

(Actually, my iwn didn't work at all, originally, because it requires
a different firmware file than any that are distributed by NetBSD at
present, and needed an addition in the driver to target that firmware.
I made those changes in my tree and have been testing with them on
both 8 and HEAD.)

> netbsd-8 Multi user no x11:
> - Suspends, keyboard *usually* non responsive on resume (but can
> switch virtual terminals)

I've never had this problem, I've found my T420 consistently responsive
whether I'm at a console or have suspended with X running (typically
with an Xfce4 session). When it comes back, no issues there (aside from
iwn).

Dave