Date: Mon, 28 Jun 2004 12:47:24 +1200 From: Andrew Thompson <andy@fud.org.nz> To: freebsd-acpi@freebsd.org Subject: AE_NO_HARDWARE_RESPONSE problems Message-ID: <20040628004724.GA4071@fire.masaclaw.co.nz>
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Hi,
On my HP Omnibook 6000 I get the following right after boot
acpi_ec0: EcRead: Failed waiting for EC to send data.
ACPI-0502: *** Error: Handler for [EmbeddedControl] returned AE_NO_HARDWARE_RESPONSE
ACPI-1303: *** Error: Method execution failed [\\_SB_.PCI0.ISA0.EC0_._Q20] (Node 0xc1350220), AE_NO_HARDWARE_RESPONSE
acpi_ec0: evaluation of GPE query method _Q20 failed - AE_NO_HARDWARE_RESPONSE
etc... I changed the loop on line 829 of acpi_ec.c from 1000 to 10000 and
everything seems to be working fine. Is this a valid fix or will it cause
problems elsewhere? One issue I can see is holding Giant for this length of
time.
dmesg:
http://andy.masaclaw.co.nz/dmesg
dmesg with patch:
http://andy.masaclaw.co.nz/dmesg-patched
ASL:
http://andy.masaclaw.co.nz/hp6000.asl
FreeBSD hudson.fire.org.nz 5.2-CURRENT FreeBSD 5.2-CURRENT #0: Sat Jun 26
16:58:12 NZST 2004 root@hudson.fire.org.nz:/usr/obj/usr/src/sys/HUDSON
i386
--- /sys/dev/acpica/acpi_ec.c Mon Jun 14 10:52:30 2004
+++ /sys/dev/acpica/acpi_ec.c Wed Jun 23 13:00:12 2004
@@ -826,7 +826,7 @@
* command. First, wait up to 1 ms in chunks of sc->ec_polldelay
* microseconds.
*/
- for (i = 0; i < 1000 / sc->ec_polldelay; i++) {
+ for (i = 0; i < 10000 / sc->ec_polldelay; i++) {
EcStatus = EC_GET_CSR(sc);
if (EVENT_READY(Event, EcStatus)) {
Status = AE_OK;
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