Bug 1890

Summary:	Switching to external VGA or TV out freezes the kernel on Sony FX602 laptop
Product:	ACPI	Reporter:	Oscar Figueiredo (oscar.figueiredo)
Component:	Power-Video	Assignee:	Len Brown (lenb)
Status:	REJECTED UNREPRODUCIBLE
Severity:	blocking	CC:	acpi-bugzilla, greve
Priority:	P2
Hardware:	i386
OS:	Linux
Kernel Version:	2.4.24+acpi-20031203, 2.6.0, 2.6.1 and 2.6.1+acpi-20031203 patch	Subsystem:
Regression:	---	Bisected commit-id:
Attachments:	Output of dmesg Output of dmidecode Output of acpidmp

Description Oscar Figueiredo 2004-01-16 05:38:02 UTC

Distribution: Debian woody with custom kernel
Hardware Environment: Sony PCG-FX602 laptop (Mobile AMD Duron)
Software Environment: 
Problem Description: Switching to external VGA display or TV-out freezes the
kernel. Also turning the laptop off does not power off though the message
acpi_power_off is displayed.
Both problems seem to be related to the ACPI code and were introduced in the
ACPI code on sourceforge somewhere between acpi-20021212-2.4.20.diff.gz and
acpi-20031203-2.4.24.diff.bz2. Kernel 2.4.20+acpi-20021212 does not have these
bugs but kernel-2.4.24+acpi-20031203 does.  The bug shows in vanilla kernel
2.6.1 and also 2.6.1+acpi-20031203 from acpi.sourceforge.net.

Steps to reproduce: At any time press Fn-F7 (swith to external VGA) or Fn-F8
(switch to TV-out) to freeze the laptop.

Comment 1 Oscar Figueiredo 2004-01-16 05:50:33 UTC

Created attachment 1873 [details]
Output of dmesg

Comment 2 Oscar Figueiredo 2004-01-16 05:53:08 UTC

Created attachment 1874 [details]
Output of dmidecode

Comment 3 Oscar Figueiredo 2004-01-16 05:56:01 UTC

Created attachment 1875 [details]
Output of acpidmp

Comment 4 Georg Greve 2004-01-27 16:07:03 UTC

The same thing happens with ASUS M2N series.

Interestingly, it only happens when APIC is enabled, if local APIC is disabled,
the machine does not crash. Can you reproduce that?

Comment 5 Oscar Figueiredo 2004-01-29 12:41:44 UTC

Indeed, the bug does not show if local APIC is disabled.

Comment 6 Len Brown 2004-02-04 22:22:29 UTC

please try 2.6.2 which has a local APIC fix based on the fix in bug 1269 
 
I'm curious what software handles the Fn+F7 and Fn+F8 events -- not immediately clear from 
your DSDT that ACPI is involved in handling these events.

Comment 7 Georg Greve 2004-02-05 04:56:15 UTC

I couldn't check, as I was unable to boot 2.6.2 or 2.6.2-mm1 with
ACPI & APIC enabled. 

(see http://bugzilla.kernel.org/show_bug.cgi?id=1269)

Comment 8 Len Brown 2004-11-15 20:13:04 UTC

please re-test with 2.6.10-rc2 or newer.

Comment 9 Len Brown 2005-01-03 15:19:21 UTC

Please re-open if still an issue with linux-2.6.10 or later.