From owner-freebsd-bugs@freebsd.org Sat Jun 23 20:11:57 2018 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 1CA1010048B2 for ; Sat, 23 Jun 2018 20:11:57 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id ABB9390FF3 for ; Sat, 23 Jun 2018 20:11:56 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 6A59010048B1; Sat, 23 Jun 2018 20:11:56 +0000 (UTC) Delivered-To: bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 2C6DD10048B0 for ; Sat, 23 Jun 2018 20:11:56 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id B99E090FED for ; Sat, 23 Jun 2018 20:11:55 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id 04E981C9CA for ; Sat, 23 Jun 2018 20:11:55 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id w5NKBsvU012289 for ; Sat, 23 Jun 2018 20:11:54 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id w5NKBsOs012288 for bugs@FreeBSD.org; Sat, 23 Jun 2018 20:11:54 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 229235] vt(4) of 11.2-RELEASE is broken with hardware dependent problem. Date: Sat, 23 Jun 2018 20:11:55 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 11.2-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: yasu@utahime.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 23 Jun 2018 20:11:57 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D229235 --- Comment #3 from Yasuhiro KIMURA --- >From the output of following commands, svn log https://svn.freebsd.org/base/releng/11.2/sys/dev/vt svn log https://svn.freebsd.org/base/releng/11.1/sys/dev/vt svn log https://svn.freebsd.org/base/stable/11/sys/dev/vt Graph can be made about update of /usr/src/sys/dev/vt and branch of releng/11.1 and releng/11.2 as following. stable/11 releng/11.1 releng/11.2 | r318506 | +---------------(r320486) | | r321087 | | | r321199 | | | r326543 | | | r329283 | | | r329305 | | | r330641 | | | r330642 | | | r330897 | | | r316019 | | | r315480 | | | r330916 | | | r330917 | | | r330921 | | | r331722 | | | r331982 | | | | r331984 | | r332643=20=20=20=20=20=20=20=20=20 | r332744 | +-------------------------------(r334459) | | So I used binary search algorithm to find which commit is the cause of vt(4) breakage and got following result. (2) r318506 vt(4) works fine r321087 r321199 r326543 r329283 r329305 r330641 r330642 (4) r330897 vt(4) works fine (3) r316019 'make buildkernel' fails r315480 (6) r330916 vt(4) works fine (7) r330917 vt(4) works fine (8) (r330920) vt(4) works fine (5) r330921 vt(4) is broken r331722 r331982 r332643=20=20=20=20=20=20=20=20=20=20=20=20 r332744 (1) r334459 vt(4) is broken (1),(2),(3),... are order of search. According to the result above the source of problem is base r330921. Commit messages of this commit says as following. ---------------------------------------------------------------------- r330921 | eadler | 2018-03-14 17:27:05 +0900 (2018/03/14 (=E6=B0=B4)) | 7 l= ines MFC r330834: vt_vga: check if VGA is available from ACPI FADT table On x86 the IA-PC Boot Flags in the FADT can signal whether VGA is available or not. ---------------------------------------------------------------------- So I guess something is wrong with way to check availability of VGA. Or there may be bug about IA-PC Boot Flags in the ACPI FADT table. --=20 You are receiving this mail because: You are the assignee for the bug.=