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)
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 the CRT.
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.
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.