Date: Sat, 23 Jun 2018 20:11:55 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 229235] vt(4) of 11.2-RELEASE is broken with hardware dependent problem. Message-ID: <bug-229235-227-tfVoFvI1WU@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-229235-227@https.bugs.freebsd.org/bugzilla/> References: <bug-229235-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D229235 --- Comment #3 from Yasuhiro KIMURA <yasu@utahime.org> --- >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.=
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