Public bug reported: Binary package hint: linux-image-2.6.22-14-generic
I know that there have been other bugs and fixes concerning sound problems after a Feisty=>Gutsy upgrade, but this one seems different. First, I'll give a summary of what I know, and then, I'll give lots of supporting detail. The summary: After upgrading from Feisty to Gutsy on my Dell XPS 410 under kubuntu, my sound stopped working completely, No error messages are ever generated, and every sound-related app behaves as if it's working. However, no sound is produced. This involves kernel 2.6.22-14-generic. However, if I reboot under the older, 2.6.20-16-generic kernel with all configuration unchanged, the sound starts working again. The detail (also appears in this thread: http://ubuntuforums.org/showthread.php?t=592782): First of all, everything I am describing here was done under the 2.6.22-14-generic kernel. To start my diagnosis, I did everything pertinent that's described in these two pages, but nothing worked: 1. Comprehensive Sound Solution Guide: http://ubuntuforums.org/showthread.php?t=205449&highlight=gutsy+no+sound 2. Debugging Sound Problems: https://help.ubuntu.com/community/DebuggingSoundProblems Also, I ran the ALSA Sound Information Script, and its output is posted here: http://pastebin.ca/750760 I ran this command and got the following results: $ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: Intel [HDA Intel], device 1: STAC92xx Digital [STAC92xx Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 >From this, I assume that my sound device is snd_hda_intel. Here's the "Audio" section of the appropriate lscpi output: $ lspci -vvnn ... 00:1b.0 Audio device [0403]: Intel Corporation 82801H (ICH8 Family) HD Audio Controller [8086:284b] (rev 02) Subsystem: Dell Unknown device [1028:01db] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 16 Region 0: Memory at dffdc000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> ... Why am I getting "<access denied>"? To investigate this, I checked user and device driver permissions: $ ls -l /dev/*snd* wxrwxrwx 1 root root 24 Oct 26 14:26 /dev/sndstat -> /proc/asound/oss/sndstat /dev/snd: total 0 crw-rw---- 1 root audio 116, 8 Oct 26 14:26 controlC0 crw-rw---- 1 root audio 116, 7 Oct 26 14:26 hwC0D2 crw-rw---- 1 root audio 116, 6 Oct 26 14:26 pcmC0D0c crw-rw---- 1 root audio 116, 5 Oct 26 14:26 pcmC0D0p crw-rw---- 1 root audio 116, 4 Oct 26 14:26 pcmC0D1p crw-rw---- 1 root audio 116, 3 Oct 26 14:26 seq crw-rw---- 1 root audio 116, 2 Oct 26 14:26 timer $ ls -l /dev/*dsp* crw-rw---- 1 root audio 14, 12 Oct 26 14:26 /dev/adsp crw-rw---- 1 root audio 14, 3 Oct 26 14:26 /dev/dsp I want to make sure that my user ID is permitted to use audio. I'm running as user "hippo", and this is the appropriate entry in /etc/group: audio:x:29:hippo That looks OK, and so I ran some more appropriate commands: $ tail -2 /proc/asound/oss/sndstat Mixers: 0: SigmaTel STAC9227 $ modinfo snd_hda_intel filename: /lib/modules/2.6.22-14-generic/updates/sound/pci/hda/snd-hda-intel.ko description: Intel HDA driver license: GPL srcversion: 7C05112D0C9214E90DF6E16 alias: pci:v000010DEd00000777sv*sd*bc*sc*i* alias: pci:v000010DEd00000776sv*sd*bc*sc*i* alias: pci:v000010DEd00000775sv*sd*bc*sc*i* alias: pci:v000010DEd00000774sv*sd*bc*sc*i* alias: pci:v000010DEd000007FDsv*sd*bc*sc*i* alias: pci:v000010DEd000007FCsv*sd*bc*sc*i* alias: pci:v000010DEd0000055Dsv*sd*bc*sc*i* alias: pci:v000010DEd0000055Csv*sd*bc*sc*i* alias: pci:v000010DEd0000044Bsv*sd*bc*sc*i* alias: pci:v000010DEd0000044Asv*sd*bc*sc*i* alias: pci:v000010DEd000003F0sv*sd*bc*sc*i* alias: pci:v000010DEd000003E4sv*sd*bc*sc*i* alias: pci:v000010DEd00000371sv*sd*bc*sc*i* alias: pci:v000010DEd0000026Csv*sd*bc*sc*i* alias: pci:v000010B9d00005461sv*sd*bc*sc*i* alias: pci:v00001039d00007502sv*sd*bc*sc*i* alias: pci:v00001106d00003288sv*sd*bc*sc*i* alias: pci:v00001002d0000AA00sv*sd*bc*sc*i* alias: pci:v00001002d0000960Csv*sd*bc*sc*i* alias: pci:v00001002d00007919sv*sd*bc*sc*i* alias: pci:v00001002d0000793Bsv*sd*bc*sc*i* alias: pci:v00001002d00004383sv*sd*bc*sc*i* alias: pci:v00001002d0000437Bsv*sd*bc*sc*i* alias: pci:v00008086d0000293Fsv*sd*bc*sc*i* alias: pci:v00008086d0000293Esv*sd*bc*sc*i* alias: pci:v00008086d0000284Bsv*sd*bc*sc*i* alias: pci:v00008086d0000269Asv*sd*bc*sc*i* alias: pci:v00008086d000027D8sv*sd*bc*sc*i* alias: pci:v00008086d00002668sv*sd*bc*sc*i* depends: snd-pcm,snd-page-alloc,snd,snd-hwdep,snd vermagic: 2.6.22-14-generic SMP mod_unload 586 parm: power_save:Automatic power-saving timeout (in second, 0 = disable). (int) parm: index:Index value for Intel HD audio interface. (int) parm: id:ID string for Intel HD audio interface. (charp) parm: model:Use the given board model. (charp) parm: position_fix:Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size). (int) parm: probe_mask:Bitmask to probe codecs (default = -1). (int) parm: single_cmd:Use single command to communicate with codecs (for debugging only). (bool) parm: enable_msi:Enable Message Signaled Interrupt (MSI) (int) parm: power_save_controller:Reset controller in power save mode. (bool) parm: enable:bool $ amixer Simple mixer control 'Master',0 Capabilities: pvolume pvolume-joined Playback channels: Mono Limits: Playback 0 - 127 Mono: Playback 127 [100%] Simple mixer control 'PCM',0 Capabilities: pvolume Playback channels: Front Left - Front Right Limits: Playback 0 - 255 Mono: Front Left: Playback 255 [100%] [0.00dB] Front Right: Playback 255 [100%] [0.00dB] Simple mixer control 'Front',0 Capabilities: pvolume pswitch Playback channels: Front Left - Front Right Limits: Playback 0 - 127 Mono: Front Left: Playback 127 [100%] [0.00dB] [off] Front Right: Playback 127 [100%] [0.00dB] [off] Simple mixer control 'Surround',0 Capabilities: pvolume pswitch Playback channels: Front Left - Front Right Limits: Playback 0 - 127 Mono: Front Left: Playback 127 [100%] [0.00dB] [off] Front Right: Playback 0 [0%] [-95.25dB] [off] Simple mixer control 'Center',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback 0 - 127 Mono: Playback 127 [100%] [0.00dB] [off] Simple mixer control 'LFE',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined Playback channels: Mono Limits: Playback 0 - 127 Mono: Playback 127 [100%] [0.00dB] [off] Simple mixer control 'Side',0 Capabilities: pvolume pswitch Playback channels: Front Left - Front Right Limits: Playback 0 - 127 Mono: Front Left: Playback 127 [100%] [0.00dB] [off] Front Right: Playback 127 [100%] [0.00dB] [off] Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] Simple mixer control 'Capture',0 Capabilities: cvolume cswitch Capture channels: Front Left - Front Right Limits: Capture 0 - 14 Front Left: Capture 0 [0%] [0.00dB] [on] Front Right: Capture 0 [0%] [0.00dB] [on] Simple mixer control 'Capture',1 Capabilities: cvolume cswitch Capture channels: Front Left - Front Right Limits: Capture 0 - 14 Front Left: Capture 0 [0%] [0.00dB] [on] Front Right: Capture 0 [0%] [0.00dB] [on] Simple mixer control 'Capture',2 Capabilities: cvolume cswitch Capture channels: Front Left - Front Right Limits: Capture 0 - 14 Front Left: Capture 0 [0%] [0.00dB] [off] Front Right: Capture 0 [0%] [0.00dB] [off] Simple mixer control 'Analog Loopback',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] Simple mixer control 'Input Source',0 Capabilities: enum Items: 'Mic' 'Front Mic' 'Line' Item0: 'Mic' Simple mixer control 'Input Source',1 Capabilities: enum Items: 'Mic' 'Front Mic' 'Line' Item0: 'Mic' Simple mixer control 'Input Source',2 Capabilities: enum Items: 'Mic' 'Front Mic' 'Line' Item0: 'Mic' Simple mixer control 'Mux',0 Capabilities: cvolume Capture channels: Front Left - Front Right Limits: Capture 0 - 4 Front Left: Capture 0 [0%] [0.00dB] Front Right: Capture 0 [0%] [0.00dB] Simple mixer control 'Mux',1 Capabilities: cvolume Capture channels: Front Left - Front Right Limits: Capture 0 - 4 Front Left: Capture 0 [0%] [0.00dB] Front Right: Capture 0 [0%] [0.00dB] Simple mixer control 'Mux',2 Capabilities: cvolume Capture channels: Front Left - Front Right Limits: Capture 0 - 4 Front Left: Capture 0 [0%] [0.00dB] Front Right: Capture 0 [0%] [0.00dB] Simple mixer control 'Swap Center/LFE',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] $ cat /etc/modules # /etc/modules: kernel modules to load at boot time. # # This file contains the names of kernel modules that should be loaded # at boot time, one per line. Lines beginning with "#" are ignored. lp fuse snd-hda-intel I ran alsamixer, and it shows all the controls and gives me no errors. I set Master, PCM, Front, Surround, Center, LFE, and Side to 100%, and I still don't hear anything. In other words, this is not a case of the sound simply being muted. Just in case, I rebuilt my kernel as described in the "Getting the ALSA drivers from a *fresh* kernel" section of the "Comprehensive Sound Problems Solutions Guide" (link number 1 near the beginning of this bug description). I also uninstalled and reinstalled linux-sound-base, alsa- base, and alsa-utils, also as decribed in that guide. None of those things helped, either. Also, in ROM BIOS, my sound card is turned on. When I try to do anything that involves sound, such as play a music file, the program always indicates no error, and the program's console output always states that the sound is happily playing without any problem. It's as if my sound card is correctly accepting all input passed to it, but simply not generating any output. After doing all this testing, and without changing any configuration, I rebooted under 2.6.20-16-generic. The sound works perfectly under that kernel. This leads me to believe that this is a kernel-specific problem in 2.6.22-14-generic. My wild guess is that there is something in that kernel that tells my sound card to mute itself in some way. Anyway, thanks to all of you for looking into this. ** Affects: linux-source-2.6.22 (Ubuntu) Importance: Undecided Status: New -- No sound at all after Gutsy upgrade https://bugs.launchpad.net/bugs/157730 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
