Created attachment 934947 [details] alsa-info.sh --no-upload Hi friends: Attached below is some output related to this bug filing. Info: (1) Fedora 20 x86_64 (2) Kernel version: 3.15.10-201.fc20.x86_64 (3) Laptop Model: Lenovo Yoga 2 I know the laptop speakers are fine because I can (multi) boot into Windows 8 and they work. In fact, they have always worked on my Fedora 20 install until I performed a 'yum update' today. I don't know what was updated (I don't always look at yum output). =:) Oddly, in the PulseAudio Volume Control (I run XFCE by the way), when I am playing a YouTube video or an MP3, I see the Left & Right VU meters moving as they are supposed to (and they ajust accordingly to my moving up & down the volume sliders). So it looks good there. And none of the channels are muted. I checked in that same PulseAudio UI as well as in the CLI based 'alsamixer'. I also checked that the right card was selected (Built-In + Analog + Speakers are all properly selected,... not External + HDM + Headphones). Note that I don't have anything in /etc/modprobe.d (for example sound.conf). Things just worked, so I never needed to make adjustments there. Here is some output that may help you (and attached is the output of the command user@lenovo$ alsa-info.sh --no-upload): ============================================================= user@lenovo$ aplay -l ============================================================= **** List of PLAYBACK Hardware Devices **** card 0: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0] Subdevices: 0/1 Subdevice #0: subdevice #0 card 0: HDMI [HDA Intel HDMI], device 7: HDMI 1 [HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: HDMI [HDA Intel HDMI], device 8: HDMI 2 [HDMI 2] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: PCH [HDA Intel PCH], device 0: ALC283 Analog [ALC283 Analog] Subdevices: 0/1 Subdevice #0: subdevice #0 ============================================================= ============================================================= user@lenovo$ lsmod | grep snd ============================================================= snd_hda_codec_hdmi 47536 1 snd_hda_codec_realtek 71717 1 snd_hda_codec_generic 67662 1 snd_hda_codec_realtek snd_hda_intel 30379 12 snd_hda_controller 30139 1 snd_hda_intel snd_hda_codec 131137 5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel,snd_hda_controller snd_hwdep 17650 1 snd_hda_codec snd_seq 62266 0 snd_seq_device 14136 1 snd_seq snd_pcm 104333 7 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_controller snd_timer 28778 2 snd_pcm,snd_seq snd 75905 31 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_seq_device soundcore 14491 2 snd,snd_hda_codec ============================================================== Any ideas as to what happened? I did web searches, but nothing I tried works. Again, it seems to be working, but not reaching the Speakers. Thank you. Noel
More information: After shutting down Fedora, powering off the laptop, and finally booting up again, the audio came back, however the audio was very choppy (on / off / on / off)... unusably so. So I tried rebooting into the previous kernel (v3.15.10-200.fc20.x86_64), and the audio works again. I guess this issue is latest kernel and/or driver and/or codec related? Definitely booting into the latest kernel does not work. Thank you.
Did your latest 'yum update' include anything pulseaudio-related? If not, this is more likely a alsa/driver/kernel issue.
Per comment #1, likely a recent kernel/driver regression... reassigning (to alsa).
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