Date: Tue, 26 Jan 2021 13:42:45 +0100 From: Emmanuel Vadot <manu@bidouilliste.com> To: Alexey Dokuchaev <danfe@freebsd.org> Cc: Robert Huff <roberthuff@rcn.com>, Niclas Zeising <zeising+freebsd@daemonic.se>, current@freebsd.org, x11@freebsd.org, =?ISO-8859-1?Q?T=3Fl?= Coosemans <tijl@FreeBSD.org> Subject: Re: loading drm crashes system Message-ID: <20210126134245.e2aca7ed6061505ff4a3cedc@bidouilliste.com> In-Reply-To: <20210126070211.GB43439@FreeBSD.org> References: <24590.137.690675.515036@jerusalem.litteratus.org> <68acb1a8-fcf8-a065-70d5-061669e2f70b@daemonic.se> <24591.35500.33066.12845@jerusalem.litteratus.org> <20210126070211.GB43439@FreeBSD.org>
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On Tue, 26 Jan 2021 07:02:11 +0000 Alexey Dokuchaev <danfe@freebsd.org> wrote: > On Mon, Jan 25, 2021 at 10:21:16PM -0500, Robert Huff wrote: > > Niclas Zeising asks: > > > When did it stop working? > > > > September ... I _think_. > > Yeah, that sounds about right. > > There are known issues with Radeon cards, they were quite well supported > a year ago, then something got broken. I've promised to bisect this and > find the cause, but there were several syscall-related changes in -CURRENT > though the course of the last year, so bisecting just the kernel is not > enough (machine won't get to login prompt if the userland does not match), > which cripples the process. > > I still intend to take this quest, just not sure when. :( > > ./danfe So back in November I applied a few commits from tijl@ related to radeon and i386 (added to cc) : https://github.com/freebsd/drm-kmod/commits/5.4-lts?author=tijl@coosemans.org For me this fixed radeon so that gives some timeline if someone with non working hardware wants to bisect. I know that bisecting drm-kmod is somewhat hard as you always need matching kernel code when we update it to use some new functionality in base linuxkpi but there is nothing that I can do about it. It might work and be quicker to only bisect the kernel with a stable/12 userland (no need to recompile) so I would start by testing a kernel from early november and same date for drm-kmod. Tijl since you also reported a build failure a few days/weeks ago for radeon can you report if your radeon card works ? (And which one it is). Cheers, -- Emmanuel Vadot <manu@bidouilliste.com>
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