when i move bus speed (in bios) from 133 to 149, alsa doesn't work anymore. /proc/asound/cards shows no soundcards while lspci still recognize the card: 0000:00:1f.5 Multimedia audio controller: Intel Corp. 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 02) at freqs >=150 lspci doesn't show it anymore. could it be an hardware problem? or it is a kernel related issue? could someone with my hw test it? Reproducible: Always Steps to Reproduce: 1.set bus freqs in bios >=149 2. 3. Actual Results: first alsa then pci doesn't recognize the card anymore. Expected Results: alsa works bash-2.05b# emerge info Portage 2.0.50-r10 (default-x86-2004.0, gcc-3.3.4, glibc-2.3.3.20040420-r1, 2.6.8-gentoo-r3) ================================================================= System uname: 2.6.8-gentoo-r3 i686 Intel(R) Pentium(R) 4 CPU 2.40GHz Gentoo Base System version 1.4.16 distcc 2.13 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled] ccache version 2.3 [enabled] Autoconf: sys-devel/autoconf-2.59-r4 Automake: sys-devel/automake-1.8.5-r1 ACCEPT_KEYWORDS="x86" AUTOCLEAN="yes" CFLAGS="-O3 -march=pentium4 -fomit-frame-pointer" CHOST="i686-pc-linux-gnu" COMPILER="" CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config /usr/kde/3.2/share/config /usr/kde/3/share/config /usr/lib/mozilla/defaults/pref /usr/share/config /var/bind /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-O3 -march=pentium4 -fomit-frame-pointer" DISTDIR="/usr/portage/distfiles" FEATURES="autoaddcvs ccache sandbox" GENTOO_MIRRORS=" http://www.die.unipd.it/pub/Linux/distributions/gentoo-sources/ ftp:///ftp-stud.fht-esslingen.de/pub/Mirrors/gentoo/" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X alsa apm arts avi berkdb cdr crypt cups curl encode fftw foomaticdb gdbm gif gpm gtk gtk2 imlib ipv6 java jpeg kde ldap libg++ libwww mad mikmod mmap mmx motif mozilla mpeg mysql ncurses nls nptl oggvorbis opengl pam pdflib perl png python qt quicktime readline sdl slang spell sse ssl svga tcltk tcpd truetype unicode x86 xml2 xmms zlib"
we generally do not address bugs with overclocked hardware.
no problem, feel free to mark this bug as invalid. i am not an overclocker so it's not a troube of mine. it was more a curiosity to understand why it doesn't work. i've tried to find out but i haven't the necessary knowledge to look at pci and alsa internals. sorry again for my eng.
Yes, we won't address this if its working fine at the standard clock speed. If you are bothered by this, I'd suggest that you attempt to reproduce it on plain development-sources and file a bug at http://bugzilla.kernel.org - but you may well be asked to stop overclocking.