Bug 105701
Summary: | seeking in VLC causes sound to become stuttered for a second | ||
---|---|---|---|
Product: | Drivers | Reporter: | Martin Vysny (vysny) |
Component: | Sound(ALSA) | Assignee: | Jaroslav Kysela (perex) |
Status: | NEW --- | ||
Severity: | normal | CC: | superquad.vortex2, tiwai |
Priority: | P1 | ||
Hardware: | x86-64 | ||
OS: | Linux | ||
Kernel Version: | 4.2.0-14-generic | Subsystem: | |
Regression: | No | Bisected commit-id: |
Description
Martin Vysny
2015-10-09 15:23:55 UTC
These error messages from hd-audio usually indicate a BIOS firmware issue. Is the Nvidia GPU working as the real output on your machine? Or is it Optimus, i.e. rendering only? In the latter case, it's strange that it exposes any HDMI/DP audio controller. Thank you. I am not using Optimus nor the nvidia binary blob; I believe X uses the Intel graphic drivers (so no noveau) and PulseAudio is using "Built-in Audio Analog Stereo" for output, not GK107. So, I believe Nvidia GPU is not used at all, not for video output nor audio output. My BIOS version is A16 as displayed by the dmidecode program: $ sudo dmidecode -s bios-version A16 I checked at http://www.dell.com/support/home/us/en/19/product-support/product/xps-15-l521x/drivers and there is no newer bios. Please let me know if there are further information I can provide. OK, then it's no wonder why the HD-audio part doesn't work. It's a kind of slave PCI entry for the HDMI/DP audio embedded in GPU. So, when GPU isn't enabled, the audio part is also dead. But the system doesn't know exactly. Usually BIOS takes care of such a thing and disables the PCI entry accordingly, but yours doesn't do so. That said, it's no generic kernel problem but specific to your machine. Just disable the module probe for that entry, e.g. via index option. option snd-hda-intel index=1,0 which will disable the second PCI entry. https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1518310 Do your dell l521x have headset jack and headphone jack? specification is different from setup guide Audio •one microphone port •one microphone/headphone combo port 18. Headphone port 19. Headphone/Microphone combo port snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC3260: line_outs=1 (0x15/0x0/0x0/0x0/0x0) type:line snd_hda_codec_realtek hdaudioC0D0: speaker_outs=1 (0x14/0x0/0x0/0x0/0x0) snd_hda_codec_realtek hdaudioC0D0: hp_outs=1 (0x1a/0x0/0x0/0x0/0x0) snd_hda_codec_realtek hdaudioC0D0: mono: mono_out=0x0 snd_hda_codec_realtek hdaudioC0D0: inputs: snd_hda_codec_realtek hdaudioC0D0: Mic=0x18 snd_hda_codec_realtek hdaudioC0D0: Internal Mic=0x12 |