Re: port-amd64/56815 (Lenovo ThinkCentre with i915drmkms graphics fails to boot)

[Jarle Greipsland <jarle.greipsland%norid.no@localhost>]

The following reply was made to PR port-amd64/56815; it has been noted by GNATS.

From: Jarle Greipsland <jarle.greipsland%norid.no@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: port-amd64/56815 (Lenovo ThinkCentre with i915drmkms graphics
 fails to boot)
Date: Wed, 21 Jun 2023 19:01:13 +0200 (CEST)

 nia%NetBSD.org@localhost writes:
 > Synopsis: Lenovo ThinkCentre with i915drmkms graphics fails to boot
 > 
 > State-Changed-From-To: feedback->open
 > State-Changed-By: nia%NetBSD.org@localhost
 > State-Changed-When: Tue, 20 Jun 2023 16:11:51 +0000
 > State-Changed-Why:
 > feedback received
 Some more feedback.  I tried a -current kernel from 2023-06-19,
 and it still goes black and hangs as before.  The system must be
 power-cycled in order to recover.
 
 I also experimented with some -current kernels from various dates
 in the past.  A kernel with sources checked out with date
 specified as -D '2021-12-18 00:00:00' boots fine, whilst a kernel
 with date specified as -D '2022-01-01 00:00:00' hangs as
 described in the problem report.  Now, the 13 days between the
 two dates coincides with an impressive number of commits by
 riastradh@ to the graphics subsystem.  I speculate that a bug
 might have made its way in to the sources at that time.
 
 					-jarle
 -- 
 "The average pointer points somewhere in X."
 				-- Henry Spencer