Date: Fri, 2 Dec 2005 02:28:49 GMT From: Jacques Garrigue <garrigue@math.nagoya-u.ac.jp> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/89825: [em] Thinkpad T42 hangs when going to sleep when em is in kernel (regression) Message-ID: <200512020228.jB22SnsY047281@www.freebsd.org> Resent-Message-ID: <200512020230.jB22U3Aj027687@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
>Number: 89825 >Category: kern >Synopsis: [em] Thinkpad T42 hangs when going to sleep when em is in kernel (regression) >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Dec 02 02:30:02 GMT 2005 >Closed-Date: >Last-Modified: >Originator: Jacques Garrigue >Release: 6.0-RELEASE >Organization: Nagoya University >Environment: FreeBSD tet4.kurims.kyoto-u.ac.jp 6.0-RELEASE FreeBSD 6.0-RELEASE #1: Fri Dec 2 10:11:23 JST 2005 garrigue@tet4.kurims.kyoto-u.ac.jp:/usr/src/sys/i386/compile/T42 i386 >Description: The problem occurs on a Thinkpad T42, with Radeon M10 visual, Intel(R) PRO/1000 Network (em), Atheros 5212 wireless (ath). When going to sleep under X11, using acpiconf -s3, the machine freezes. The problem can be mitigated by setting hw.syscons.sc_no_suspend_vtswitch to 1, but I still observe freezes when going to sleep while accessing the disk. The problem disappears completely when removing em from the kernel (no need for sc_no_suspend_vtswitch.) It reappears when loading it as a kernel module. There is no such problem using the generic kernel from 6.0-RC1 (which includes em) The problem is still there in STABLE as of 2005-12-01. >How-To-Repeat: On a Thinkpad T42, go to sleep under X11 without setting sc_no_suspend_vtswitch. This might occur on other laptops using the em driver. >Fix: workaround: remove em from the kernel. >Release-Note: >Audit-Trail: >Unformatted:
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200512020228.jB22SnsY047281>