Date: Tue, 09 Jan 2001 11:11:35 +0900 From: Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> To: Greg Black <gjb@gbch.net> Cc: hackers@freebsd.org, yokota@zodiac.mech.utsunomiya-u.ac.jp Subject: Re: psmintr: out of sync Message-ID: <200101090211.LAA02768@zodiac.mech.utsunomiya-u.ac.jp> In-Reply-To: Your message of "Sun, 07 Jan 2001 10:52:21 %2B1000." <nospam-3a57bdc52710f07@maxim.gbch.net> References: <nospam-3a57bdc52710f07@maxim.gbch.net>
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There is a workaround, if not a fix, for this problem in -CURRENT.
Apply the following patch to /sys/isa/psm.c and add flags 0x8000
to psm driver in your kernel config file as follows.
device psm0 at atkbdc? irq 12 flags 0x8000
Kazu
>I have an intermittent (and fairly rare) problem with various
>PS/2 mice on a set of boxes running 4.1-R (but the problem was
>also evident under 3.{1,2,3,4}-R). The boxes all run X and, on
>occasion, the mouse will stop working and hundreds of "psmintr:
>out of sync" messages will be logged.
>
>It happens maybe once in 6 weeks on one of seven machines, so is
>not easy to diagnose.
>
>I can fix it by logging in with ssh (or switching to one of the
>virtual consoles if the box is handy), killing and re-starting
>moused.
>
>This is not a very useful solution for distant clients who are
>not competent to do stuff like that and tend to resort to the
>power switch if I'm not available instantly -- and that leads to
>undesirable collateral damage.
>
>I'm keen to hear practical suggestions for a fix, or even better
>that a bug has been found and fixed.
Index: psm.c
===================================================================
RCS file: /src/CVS/src/sys/isa/psm.c,v
retrieving revision 1.33
retrieving revision 1.34
diff -u -r1.33 -r1.34
--- psm.c 2000/12/01 05:24:30 1.33
+++ psm.c 2000/12/01 05:26:24 1.34
@@ -20,7 +20,7 @@
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
- * $FreeBSD: src/sys/isa/psm.c,v 1.33 2000/12/01 05:24:30 yokota Exp $
+ * $FreeBSD: src/sys/isa/psm.c,v 1.34 2000/12/01 05:26:24 yokota Exp $
*/
/*
@@ -176,10 +176,12 @@
#define PSM_CONFIG_IGNPORTERROR 0x1000 /* ignore error in aux port test */
#define PSM_CONFIG_HOOKRESUME 0x2000 /* hook the system resume event */
#define PSM_CONFIG_INITAFTERSUSPEND 0x4000 /* init the device at the resume event */
+#define PSM_CONFIG_SYNCHACK 0x8000 /* enable `out-of-sync' hack */
#define PSM_CONFIG_FLAGS (PSM_CONFIG_RESOLUTION \
| PSM_CONFIG_ACCEL \
| PSM_CONFIG_NOCHECKSYNC \
+ | PSM_CONFIG_SYNCHACK \
| PSM_CONFIG_NOIDPROBE \
| PSM_CONFIG_NORESET \
| PSM_CONFIG_FORCETAP \
@@ -1900,6 +1902,15 @@
log(LOG_DEBUG, "psmintr: out of sync (%04x != %04x).\n",
c & sc->mode.syncmask[0], sc->mode.syncmask[1]);
sc->inputbytes = 0;
+ if (sc->config & PSM_CONFIG_SYNCHACK) {
+ /*
+ * XXX: this is a grotesque hack to get us out of
+ * dreaded "out of sync" error.
+ */
+ log(LOG_DEBUG, "psmintr: re-enable the mouse.\n");
+ disable_aux_dev(sc->kbdc);
+ enable_aux_dev(sc->kbdc);
+ }
continue;
}
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