User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1b4) Gecko/20090427 Fedora/3.5-0.20.beta4.fc11 Firefox/3.5b4 All audio playback (using Totem, Rhythmbox, mouse-over preview, etc.) is sped up slightly and also higher in pitch while running the F11 LiveCD. Reproducible: Always Steps to Reproduce: 1.Boot from F11 LiveCD 2.Play any audio file (*.wav, *.flac, or *.ogg) 3. Actual Results: Increased playback speed and higher pitch. Expected Results: Normal playback speed and normal pitch. The sampling rate must be being set incorrectly at boot. Attached is the output for "alsa-info.sh" for 3 separate trials of booting into the LiveCD. Also attached is the same output but from Arch Linux running on the same hardware, with correctly working audio playback. The biggest clue (IMHO, but my alsa knowledge is limited) is that the "PCM front DAC" and "PCM ADC" values are greater than 44100 when the playback is not working correctly (sped up).
Created attachment 347501 [details] First Boot into F11 LiveCD
Created attachment 347502 [details] Second Boot into F11 LiveCD
Created attachment 347503 [details] Third Boot into F11 LiveCD
Created attachment 347504 [details] alsa-info.sh ouput from working system (Arch) on same hardware
I'm almost certain it's the values mentioned in the final paragraph of the initial report. They match the described symptoms very well. I don't know where those get set or if it's possible to override them, though. jaroslav, over to you! -- Fedora Bugzappers volunteer triage team https://fedoraproject.org/wiki/BugZappers
Update: I'm also getting the same results after using the installation DVD to install, so the issue is not specific to the LiveCD.
It looks like an another ac97_clock measure problem. Any sound related messages in output from dmesg after boot (working and not working initialization)?
Booted the Live CD twice. 1st boot, with an incorrectly set DAC/ADC (47113Hz) [liveuser@localhost ~]$ dmesg | grep ac97 ALSA sound/pci/ac97/ac97_codec.c:2127: AC'97 0 analog subsections not ready intel8x0_measure_ac97_clock: measured 51258 usecs [liveuser@localhost ~]$ dmesg | grep intel8x0 intel8x0_measure_ac97_clock: measured 51258 usecs intel8x0: clocking to 51280 [liveuser@localhost ~]$ 2nd boot, with a correctly set DAC/ADC (44100Hz) [liveuser@localhost ~]$ dmesg | grep ac97 ALSA sound/pci/ac97/ac97_codec.c:2127: AC'97 0 analog subsections not ready intel8x0_measure_ac97_clock: measured 50999 usecs [liveuser@localhost ~]$ dmesg | grep intel8x0 intel8x0_measure_ac97_clock: measured 50999 usecs intel8x0: measured clock 215 rejected intel8x0: clocking to 48000 [liveuser@localhost ~]$
Fedora 11 installed from DVD, all updates, DAC/ADC always set incorrectly on boot: 627> r 621 dmesg | grep intel8x0 intel8x0_measure_ac97_clock: measured 50800 usecs intel8x0: measured clock 78 rejected intel8x0: clocking to 48000 628>
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