Bug 1963

Summary:	ASUS M2N: Fn+F8 (switch to external CRT) crashes kernel
Product:	ACPI	Reporter:	Georg Greve (greve)
Component:	BIOS	Assignee:	Len Brown (lenb)
Status:	REJECTED INVALID
Severity:	normal	CC:	acpi-bugzilla, ley
Priority:	P2
Hardware:	i386
OS:	Linux
Kernel Version:	2.6.2-rc2	Subsystem:
Regression:	---	Bisected commit-id:

Description Georg Greve 2004-01-28 02:36:29 UTC

Distribution: Debian GNU/Linux (testing/unstable)
Hardware Environment: ASUS M2400N (Centrino) BIOS Version 0206
Software Environment:
Problem Description:

If local APIC is enabled, pressing Fn+F8 (switch to external monitor) creates
instant crash.

Steps to reproduce:

Compile kernel 2.6.2-rc2[*] with local APIC enabled, press Fn+F8 on ASUS M2N.

For system information, please see the information filed at
 http://bugzilla.kernel.org/show_bug.cgi?id=1774
(it is the same machine)

[*] Generally true for all 2.6.x, but pre 2.6.2-pre2 won't boot (see 
http://bugzilla.kernel.org/show_bug.cgi?id=1269)

Comment 1 sebastian henschel 2004-01-29 03:19:20 UTC

just to clarify: this happens with the latest ACPI patch (20040126) and did
happen   with 2.4 kernels as well.

Comment 2 sebastian henschel 2004-01-29 03:20:57 UTC

damnit, i meant: it happens regardless of using the latest ACPI patch or the one
built-in to 2.6. :)

Comment 3 Len Brown 2004-02-18 18:37:45 UTC

any luck if you boot with "nolapic"?

Comment 4 Georg Greve 2004-02-19 01:17:44 UTC

When booting with nolapic, the problem does not appear.

The screen still has the problem of showing garbage on the upper
border after the switch -- which may come from the framebuffer from
the way it looks -- but it does not crash and actually does turn on
the CRT.

Comment 5 Stephan Sürken 2004-03-13 14:50:28 UTC

FYE: I just updated to the new BIOS (its not yet officially announced, it seems)
on my M2400N, and (2.6.4, that is, haven't tried others), and Fn-F8 no
longer crashes, even w/o nolapic.

ftp://ftp.asuscom.de/pub/NOTEBOOK/M2x00N/Bios/M2n0208a.zip

See also #1269.

Comment 6 Georg Greve 2004-03-14 07:55:19 UTC

I can confirm this with 2.6.3 although the ALSA init shows plenty of 

 codec_semaphore: semaphore is not ready [0x1][0x700300]

lines that don't seem to do any harm, though.

Comment 7 Georg Greve 2004-03-14 07:56:19 UTC

P.S. the problem with the garbage on the upper part of the screen remains, though.

Comment 8 Sebastian Ley 2004-08-26 09:31:00 UTC

I too have that "garbage" problem, but only when I switch to CRT after X has 
started. If I attatch a CRT on boot, it works just fine, even when X starts 
up. If you need any logs, debug output etc. I'll be happy to provide it.

Comment 9 Len Brown 2004-11-16 22:47:13 UTC

per comment #5 the crash this bug was filed against
was fixed by a BIOS upgrade, so I'm closing the bug.

Feel free to open additional bugs on additional issues.