From owner-freebsd-bugs@freebsd.org Sun Sep 23 13:56:18 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 2BEEF108F5A9 for ; Sun, 23 Sep 2018 13:56:18 +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 BD004772AE for ; Sun, 23 Sep 2018 13:56:17 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 7EA9D108F5A8; Sun, 23 Sep 2018 13:56:17 +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 5CB28108F5A7 for ; Sun, 23 Sep 2018 13:56:17 +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 F189D772AC for ; Sun, 23 Sep 2018 13:56:16 +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 31B121954C for ; Sun, 23 Sep 2018 13:56:16 +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 w8NDuGdV099155 for ; Sun, 23 Sep 2018 13:56:16 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id w8NDuGT8099154 for bugs@FreeBSD.org; Sun, 23 Sep 2018 13:56:16 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 231058] no support for active PS/2 multiplexing results in erratic behaviour of Synaptics touchpad on HP 8560w Date: Sun, 23 Sep 2018 13:56:16 +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: wulf@freebsd.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: cc 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: 2.1.27 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 23 Sep 2018 13:56:18 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D231058 Vladimir Kondratyev changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |wulf@freebsd.org --- Comment #1 from Vladimir Kondratyev --- (In reply to Michael Figiel from comment #0) > I think the root cause of the 0x46 id is that FreeBSD doesn't > support active PS/2 multiplexing. Wow! I was not aware of 'active PS/2 multiplexing' when committed 0x46 hack. Unfortunately, now I do not have access to such a hardware to reimplement i= t in a right way. > multiplexing controller operated in legacy (non-multiplexing) > mode with more than one aux device might garble some of the > data passed to the host. I don`t think so. Trackpoint support code in synaptics driver expects trackpoint to be attached via special passthrough interface which does Generic->Synaptics protocol conversion. It (driver) it its current state ju= st can not decode generic mouse protocol. > I'm not sure if it is really worth the effort to implement the multiplexi= ng Proper multiplexing implementation requires a lot of changes in both atkbd = and psm drivers. I think it is overkill. The simpler way is to enable multiplex= ing only for synaptics devices and just only for configuring/querying stage and return to legacy mode after. trackpad/trackpoint packet separation problem should be solved in that case. > that the few machines which use it will die of old age pretty soon 0x46 hack was made for 2013 year model. It is not so old to die quickly. --=20 You are receiving this mail because: You are the assignee for the bug.=