Kernel Bug Tracker – Bug 1963
ASUS M2N: Fn+F8 (switch to external CRT) crashes kernel
Last modified: 2004-11-16 22:47:13 UTC
Distribution: Debian GNU/Linux (testing/unstable)
Hardware Environment: ASUS M2400N (Centrino) BIOS Version 0206
If local APIC is enabled, pressing Fn+F8 (switch to external monitor) creates
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
(it is the same machine)
[*] Generally true for all 2.6.x, but pre 2.6.2-pre2 won't boot (see
just to clarify: this happens with the latest ACPI patch (20040126) and did
happen with 2.4 kernels as well.
damnit, i meant: it happens regardless of using the latest ACPI patch or the one
built-in to 2.6. :)
any luck if you boot with "nolapic"?
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
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.
See also #1269.
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.
P.S. the problem with the garbage on the upper part of the screen remains, though.
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.
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.