Re: kern/56672: i915drmkms hangs on boot

[Taylor R Campbell <riastradh%NetBSD.org@localhost>]

The following reply was made to PR kern/56672; it has been noted by GNATS.

From: Taylor R Campbell <riastradh%NetBSD.org@localhost>
To: manu%NetBSD.org@localhost
Cc: gnats-bugs%NetBSD.org@localhost
Subject: Re: kern/56672: i915drmkms hangs on boot
Date: Sun, 9 Jul 2023 20:09:00 +0000

 Can you try enabling the new HEARTBEAT kernel option, and setting
 DDB_COMMANDONENTER="bt;ps;show all tstiles/t;sync", and see if you get
 more diagnostic information that way?
 
 This should be considerably less costly than LOCKDEBUG, in case that
 was a barrier to further feedback the last time around -- I intend to
 turn HEARTBEAT on by default once it has had a little more testing.
 
 options 	HEARTBEAT
 options 	HEARTBEAT_MAX_PERIOD_DEFAULT=15
 options 	DDB_COMMANDONENTER="bt;ps;show all tstiles/t;sync"
 
 Without more diagnostic information, there's not much more I can do
 about this.