Public bug reported: Ubuntu 12.04 LTS Precise Pangolin freezes most of the time when trying to use HDMI audio (in particular from google-talkplugin, mplayer, vdr- sxfe, vlc, xine) up to and including the current Kernel 3.2.0-49 without putting snd_hda_codec_hdmi on the /etc/modprobe.d/blacklist-oss.conf (thereby losing sound over the Nvidia outputs).
Invoking pavucontrol with snd_hda_codec_hdmi loaded almost always results in a crash that makes even Ctrl-Alt-SysRq inaccessible. Freezes also occurred with both hw and plughw devices of the Nvidia HDMIs under ALSA when pulseaudio had been uninstalled for testing. According to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1173769 #3 there is "a kernel issue which most likely is to happen with Nvidia graphics", this is also not fixed by using https://code.launchpad.net/~ubuntu- audio-dev/+archive/alsa-daily/+files/oem-audio-hda-daily- dkms_0.201307180553%7Eprecise1_all.deb according to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1169984 #16. New bug as identified by David Henningsson (diwic) to have different causes than https://bugs.launchpad.net/ubuntu-desktop-tests/+bug/1169984 at #119 et seq. Blacklisting is the supposed fix in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181616 and http://lists.debian.org/debian-kernel/2012/05/msg00110.html but not the solution if HDMI audio is needed. ** Affects: linux (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1203520 Title: snd_hda_codec_hdmi (via pavucontrol or applications playing sound) freezes Ubuntu 12.04 LTS Status in “linux” package in Ubuntu: New Bug description: Ubuntu 12.04 LTS Precise Pangolin freezes most of the time when trying to use HDMI audio (in particular from google-talkplugin, mplayer, vdr- sxfe, vlc, xine) up to and including the current Kernel 3.2.0-49 without putting snd_hda_codec_hdmi on the /etc/modprobe.d/blacklist- oss.conf (thereby losing sound over the Nvidia outputs). Invoking pavucontrol with snd_hda_codec_hdmi loaded almost always results in a crash that makes even Ctrl-Alt-SysRq inaccessible. Freezes also occurred with both hw and plughw devices of the Nvidia HDMIs under ALSA when pulseaudio had been uninstalled for testing. According to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1173769 #3 there is "a kernel issue which most likely is to happen with Nvidia graphics", this is also not fixed by using https://code.launchpad.net /~ubuntu-audio-dev/+archive/alsa-daily/+files/oem-audio-hda-daily- dkms_0.201307180553%7Eprecise1_all.deb according to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1169984 #16. New bug as identified by David Henningsson (diwic) to have different causes than https://bugs.launchpad.net/ubuntu-desktop- tests/+bug/1169984 at #119 et seq. Blacklisting is the supposed fix in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181616 and http://lists.debian.org/debian-kernel/2012/05/msg00110.html but not the solution if HDMI audio is needed. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1203520/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp