Date: Tue, 26 Jan 2021 16:21:38 +0100 From: =?UTF-8?B?VMSzbA==?= Coosemans <tijl@FreeBSD.org> To: Emmanuel Vadot <manu@bidouilliste.com> Cc: Alexey Dokuchaev <danfe@freebsd.org>, Robert Huff <roberthuff@rcn.com>, Niclas Zeising <zeising+freebsd@daemonic.se>, current@freebsd.org, x11@freebsd.org Subject: Re: loading drm crashes system Message-ID: <20210126162138.25885562@FreeBSD.org> In-Reply-To: <20210126134245.e2aca7ed6061505ff4a3cedc@bidouilliste.com> 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> <20210126134245.e2aca7ed6061505ff4a3cedc@bidouilliste.com>
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On Tue, 26 Jan 2021 13:42:45 +0100 Emmanuel Vadot <manu@bidouilliste.com> wrote: > 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. :( > > 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). My card works (14.0-CURRENT from last Sunday) but it is an old radeon 9700 from 2004 so it doesn't have any fancy modern features and uses only a small part of the radeon driver.
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