Date: Sun, 20 Apr 2014 16:01:15 GMT From: Roberto de Iriarte <rdeiriar@spock.cl> To: freebsd-gnats-submit@FreeBSD.org Subject: usb/188829: atp fails on Macbook Pro 4.1 Message-ID: <201404201601.s3KG1F5l015095@cgiserv.freebsd.org> Resent-Message-ID: <201404201610.s3KGA0g7091332@freefall.freebsd.org>
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>Number: 188829 >Category: usb >Synopsis: atp fails on Macbook Pro 4.1 >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-usb >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sun Apr 20 16:10:00 UTC 2014 >Closed-Date: >Last-Modified: >Originator: Roberto de Iriarte >Release: 10.0-STABLE >Organization: De Iriarte >Environment: FreeBSD mbp 10.0-STABLE FreeBSD 10.0-STABLE #13 r264692M: Sun Apr 20 12:14:28 CLST 2014 root@mbp:/usr/obj/usr/src/sys/GENERIC amd64 >Description: On my Macbook Pro 4.1, after upgrading from 10.0-RELEASE to 10.0-STABLE, the atp touchpad driver becomes unresponsive after a few minutes under high I/O load, until it stalls completely. The device never unstalls, regardless of system load. Closing and opening /dev/atp0 (i.e. restarting moused) restores responsiveness for a couple of minutes, then it fails in the same manner. Reverting back /usr/src/sys/dev/usb/input/atp.c from rev. 263063 to rev. 233774 (as shipped with FreeBSD 10.0-RELEASE) solves the problem completely on my machine. Unfortunately, i am not versed in the workings of the atp driver in order to debug the new driver any further. >How-To-Repeat: Use the trackpad under high I/O load >Fix: Hack: Revert back to /usr/src/sys/dev/usb/input/atp.c as shipped with 10.0-RELEASE (r. 233774) >Release-Note: >Audit-Trail: >Unformatted:
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