re: kern/49744 console is blank drm2/radeon

["matthew green via gnats" <gnats-admin%NetBSD.org@localhost>]

The following reply was made to PR kern/49744; it has been noted by GNATS.

From: matthew green <mrg%eterna23.net@localhost>
To: Rin Okuyama <rokuyama.rk%gmail.com@localhost>
Cc: Taylor R Campbell <riastradh%NetBSD.org@localhost>,
    Martin Neitzel <neitzel%hackett.marshlabs.gaertner.de@localhost>,
    gnats-bugs%NetBSD.org@localhost, netbsd-bugs%NetBSD.org@localhost
Subject: re: kern/49744 console is blank drm2/radeon
Date: Mon, 21 Oct 2024 16:44:15 +1100

 Rin Okuyama writes:
 > Martin Neitzel kindly reports that X11 works just fine on
 > HP Proliant DL360-Gen6 with ATI ES1000, if the workaround for
 > this PR is disabled:
 >
 > https://mail-index.netbsd.org/current-users/2024/10/10/msg045709.html
 >
 > Note that DL380 with ATI ES1000 did not work at that time.
 >
 > Can we switch `radeon_pci_ignore_r100_r200` to false by default,
 > or just revert the workaround itself?
 >
 > http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/external/bsd/drm2/radeon/rad=
 eon_pci.c.diff?r1=3D1.9&r2=3D1.10&f=3Dh
 >
 > Can someone still test recent -current or netbsd-10 on the
 > affected machines?
 
 unfortunately, nothing has changed for me on my affected old
 system.  X11 hangs when starting up, and there's this spew in
 dmesg every second:
 
 [  3358.002691] radeon0: error: error: ring 0 stalled for more than 72010m=
 sec
 [  3358.002691] radeon0: warn: GPU lockup (current fence id 0x000000000000=
 0003 last fence id 0x0000000000000005 on ring 0)
 [  3358.502708] radeon0: error: error: ring 0 stalled for more than 72510m=
 sec
 [  3358.502708] radeon0: warn: GPU lockup (current fence id 0x000000000000=
 0003 last fence id 0x0000000000000005 on ring 0)
 
 wsfb works.  perhaps we could enable r100/r200, but make the
 default driver for these in X itself be wsfb not radeon, and
 then it becomes much easier to test with a basic xorg.conf
 vs. a patched kernel.
 
 actually, this userland is older, and i only upgraded the
 kernel, so i'll try that next.
 
 
 .mrg.