After updating from Kernel 2.6.29-gentoo-r5 the sound volume is much to low. I just can hear something when all volume controls are on highest level. (Starting again with the old Kernel my neighbors got a heart attack.) Reproducible: Always Installed alsa-lib: 1.0.20-r1 # lsmod | grep snd snd_seq_oss 26176 0 snd_seq_midi_event 6708 1 snd_seq_oss snd_seq 44976 4 snd_seq_oss,snd_seq_midi_event snd_pcm_oss 35680 0 snd_mixer_oss 14644 1 snd_pcm_oss snd_via82xx 21736 5 snd_ac97_codec 102520 1 snd_via82xx ac97_bus 1524 1 snd_ac97_codec snd_pcm 65596 4 snd_pcm_oss,snd_via82xx,snd_ac97_codec snd_timer 19352 2 snd_seq,snd_pcm snd_page_alloc 8540 2 snd_via82xx,snd_pcm snd_mpu401_uart 6420 1 snd_via82xx snd_rawmidi 20704 1 snd_mpu401_uart snd_seq_device 6720 3 snd_seq_oss,snd_seq,snd_rawmidi snd 52900 20 snd_seq_oss,snd_seq,snd_pcm_oss,snd_mixer_oss,snd_via82xx,snd_ac97_codec,snd_pcm,snd_timer,snd_mpu401_uart,snd_rawmidi,snd_seq_device # dmesg | grep VIA VIA 82xx Audio 0000:00:11.5: PCI INT C -> Link[LNKC] -> GSI 5 (level, low) -> IRQ 5 VIA 82xx Audio 0000:00:11.5: setting latency timer to 64 # emerge --info Portage 2.1.6.13 (default/linux/x86/2008.0/desktop, gcc-4.3.2, glibc-2.9_p20081201-r2, 2.6.30-gentoo-r4 i686) ================================================================= System uname: Linux-2.6.30-gentoo-r4-i686-mobile_AMD_Athlon-tm-_XP_2400+-with-gentoo-1.12.11.1 Timestamp of tree: Wed, 26 Aug 2009 09:30:01 +0000 app-shells/bash: 3.2_p39 dev-java/java-config: 2.1.8-r1 dev-lang/python: 2.6.2-r1 dev-util/cmake: 2.6.4 sys-apps/baselayout: 1.12.11.1 sys-apps/sandbox: 1.6-r2 sys-devel/autoconf: 2.13, 2.63-r1 sys-devel/automake: 1.9.6-r2, 1.10.2 sys-devel/binutils: 2.18-r3 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 1.5.26 virtual/os-headers: 2.6.27-r2 ACCEPT_KEYWORDS="x86" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -march=i686 -pipe" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/texmf-site/tex/latex/html /var/lib/hsqldb" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c /etc/udev/rules.d" CXXFLAGS="-O2 -march=i686 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="distlocks fixpackages parallel-fetch protect-owned sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo http://distfiles.gentoo.org http://www.ibiblio.org/pub/Linux/distributions/gentoo" LANG="de_DE.UTF-8" LC_ALL="de_DE.UTF-8" LDFLAGS="-Wl,-O1" LINGUAS="de en" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/portage/local/layman/gentoo-de /usr/portage/local/layman/sunrise" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="3dnow X a52 aac acl acpi alsa berkdb branding bzip2 cairo cdda cdr cli cracklib crypt cups cupsddk dbus dri dts dvd dvi eds emboss encode evo exif fam ffmpeg firefox flac fortran gdbm gif gimp gnome gpm gstreamer gtk hal iconv ipv6 isdnlog java jpeg latex libnotify lyx mad midi mikmod mmx mono mp3 mp4 mpeg mudflap nautilus ncurses nls nptl nptlonly ogg opengl openmp pam pcre pdf perl png ppds pppd pulseaudio python qt3support quicktime radeon readline reflection scanner sdl session spell spl ssl startup-notification svg symlink sysfs tcpd theora thunar tiff truetype unicode usb vorbis win32codecs wmf x264 x86 xml xorg xulrunner xv xvid zlib" ALSA_CARDS="via82xx" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="de en" SANE_BACKENDS="epson" USERLAND="GNU" VIDEO_CARDS="radeon" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, MAKEOPTS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
I just tried kernel 2.6.30-gentoo-r5. It has the same problem. Kai Wüstermann
(In reply to comment #1) > I just tried kernel 2.6.30-gentoo-r5. It has the same problem. > > Kai Wüstermann > Until the ALSA team replies with a more sophisticated comment, could we have the dmesg output after a boot with: a) 2.6.29-gentoo-r5 b) 2.6.30-gentoo-r4 ? Also, don't forget to lower your volume before booting with the latter to avoid waking up your poor neighbours. Thanks!
Created attachment 202861 [details] dmesg for kernel-2.6.29-gentoo-r5
Created attachment 202862 [details] dmesg for kernel-2.6.30-gentoo-r5
Created attachment 202863 [details] dmesg for kernel-2.6.30-gentoo-r4
I put it to the attachment. Sorry for the wrong order. Kai Wüstermann
can you reproduce the bug in both kernel
(In reply to comment #7) > can you reproduce the bug in both kernel > Yes, the bug is in both kernels 2.6.30-r4 and 2.6.30-r5.
Hello there, first of all I want you to open a: "alsamixer -V all" and play around with everything. Check out this thread, for example: http://bbs.archlinux.org/viewtopic.php?id=74691 Now, I'd also like you to run this script: http://git.alsa-project.org/?p=alsa-driver.git;a=blob_plain;f=utils/alsa-info.sh and attach us the output. It's an ALSA debugging script that spits out really useful info, kernel and alsa related. Finally, a copy of your /proc/interrupts would be nice :) Thanks!
Created attachment 202884 [details] alsa-info.txt for kernel-2.6.29-gentoo-r5
Created attachment 202885 [details] alsa-info.txt for kernel-2.6.30-gentoo-r5
(In reply to comment #9) > first of all I want you to open a: "alsamixer -V all" and play around with > everything. Check out this thread, for example: > http://bbs.archlinux.org/viewtopic.php?id=74691 I played with the mixers before. Booting the kernel-gentoo.2.6.29-r5 the sound plays right without changing the mixers. So I don't think the a problem with the mixer. > Now, I'd also like you to run this script: > http://git.alsa-project.org/?p=alsa-driver.git;a=blob_plain;f=utils/alsa-info.sh > and attach us the output. It's an ALSA debugging script that spits out really > useful info, kernel and alsa related. It's attached for kernel 2.6.29-r5 and 2.6.30-r5. I used the script as normal user. > > Finally, a copy of your /proc/interrupts would be nice :) from Kernel 2.6.30-r5: cat /proc/interrupts CPU0 0: 257046 XT-PIC-XT timer 1: 1426 XT-PIC-XT i8042 2: 0 XT-PIC-XT cascade 3: 7708 XT-PIC-XT uhci_hcd:usb3 5: 2700710 XT-PIC-XT uhci_hcd:usb4, VIA8233 7: 1 XT-PIC-XT parport0 8: 2 XT-PIC-XT rtc0 9: 174 XT-PIC-XT acpi 10: 12309 XT-PIC-XT ehci_hcd:usb1 11: 3641 XT-PIC-XT uhci_hcd:usb2, eth0 14: 25412 XT-PIC-XT ide0 15: 5279 XT-PIC-XT ide1 NMI: 0 Non-maskable interrupts LOC: 0 Local timer interrupts SPU: 0 Spurious interrupts TRM: 0 Thermal event interrupts ERR: 0 MIS: 0
Also reported in the Debian bug tracking system but with no resolution as of yet: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=532613 Kai, while I'm not suggesting that this is related to the bug, I thought to point out that you should enable APIC support (CONFIG_X86_LOCAL_APIC) and attempt to use it, if feasible. It's interesting that the BIOS has elected to disable it but this can be overridden by passing "lapic" as a boot parameter. The XT-PIC is really quite archaic and not an ideal choice for 21st century hardware.
I did some further digging and found the following post by Takashi Iwai in response to a user who complained of low volume in snd_via82xx as early as 2.6.30-rc6: "Try to correct 'DXS Playback Volume' mixer elements. The dB range of these volumes were fixed recently to the correct values. If the old mixer value is restored using the dB value, it would be restored to a much lower value, which explains your symptom. Simply set these volumes to the max (i.e. 0dB) and never change unless you really need them." Apparently, this resolved the matter for the user concerned. So, before the investigation leads elsewhere, you might try removing /etc/asound.state and/or adjusting the levels as described. In this case, the old value - while being undesirable - is still within bounds, so there is no rational way for the driver to make any correction in lieu of the fix. Interestingly, Ubuntu opted to unmute and force the levels on the DXS controls in their init scripts: http://launchpadlibrarian.net/2559258/alsa-utils_1.0.10-1ubuntu12.debdiff
(In reply to comment #13) > Also reported in the Debian bug tracking system but with no resolution as of > yet: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=532613 > > Kai, while I'm not suggesting that this is related to the bug, I thought to > point out that you should enable APIC support (CONFIG_X86_LOCAL_APIC) and > attempt to use it, if feasible. It's interesting that the BIOS has elected to > disable it but this can be overridden by passing "lapic" as a boot parameter. > The XT-PIC is really quite archaic and not an ideal choice for 21st century > hardware. > cat .config | grep APIC CONFIG_X86_UP_APIC=y CONFIG_X86_UP_IOAPIC=y CONFIG_X86_LOCAL_APIC=y CONFIG_X86_IO_APIC=y
(In reply to comment #14) > I did some further digging and found the following post by Takashi Iwai in > response to a user who complained of low volume in snd_via82xx as early as > 2.6.30-rc6: > > "Try to correct 'DXS Playback Volume' mixer elements. The dB range of these > volumes were fixed recently to the correct values. If the old mixer value is > restored using the dB value, it would be restored to a much lower value, which > explains your symptom. Simply set these volumes to the max (i.e. 0dB) and never > change unless you really need them." > > Apparently, this resolved the matter for the user concerned. So, before the > investigation leads elsewhere, you might try removing /etc/asound.state and/or > adjusting the levels as described. In this case, the old value - while being > undesirable - is still within bounds, so there is no rational way for the > driver to make any correction in lieu of the fix. > > Interestingly, Ubuntu opted to unmute and force the levels on the DXS controls > in their init scripts: > > http://launchpadlibrarian.net/2559258/alsa-utils_1.0.10-1ubuntu12.debdiff > I deleted my /etc/asound.state when I updated to media-libs/alsa-lib-1.0.20-r1 some time ago. I only have a /etc/modprobe.d/alsa.conf and a /etc/conf.d/alsasound without any mixer levels.
One last pathetic attempt before we send this bug upstream: Have you tried muting the IEC958 channel through alsamixer?
I solved the problem. By comparing the alsa-info.txt I found this: alsa-info.txt.fVPyrGdZNA for kernel-2.6.29-gentoo-r5: Simple mixer control 'VIA DXS',0 Capabilities: pvolume Playback channels: Front Left - Front Right Limits: Playback 0 - 31 Mono: Front Left: Playback 31 [100%] [-48.00dB] Front Right: Playback 31 [100%] [-48.00dB] alsa-info.txt.MD2dvxHsdr for kernel-2.6.30-gentoo-r5 Simple mixer control 'VIA DXS',0 Capabilities: pvolume Playback channels: Front Left - Front Right Limits: Playback 0 - 31 Mono: Front Left: Playback 0 [0%] [-99999.99dB] Front Right: Playback 0 [0%] [-99999.99dB] The levels are different only, but I did not played with the mixer. I only booted the differend kernels. Thank you for your help Kai Wüstermann
A last info: I just booted the Kernel 2.6.29 for (I hope) the last time. After rebooting with Kernel 2.6.30 the mixerlevel VIA DXS was 0. So I think the problem is solved, but it still is a bug.
