** Description changed: SRU information follows: Impact: A subset of users with a default Ubuntu 8.10 install (with libasound2-plugins installed) experience nondeterministic hangs of up to several minutes on shutdown (or startup) when the sound card's mixer control state is (re)stored. This hang is due to a variable, - PULSE_INTERNAL, in the pulse ALSA plugin being non-zero when amixer and - alsactl are called, meaning that PulseAudio is probed preferentially, - triggering name resolution. + PULSE_INTERNAL, in the pulse ALSA plugin having a non-NULL value when + amixer and alsactl are called so that PulseAudio is probed + preferentially, triggering name resolution over potentially partially + configured network interfaces. - Resolution: In the alsa-utils initscript, unconditionally set + Resolution: In the alsa-utils initscript, unconditionally export PULSE_INTERNAL=0 to prevent native ALSA applications from probing PulseAudio while querying and (re)storing sound card state. - Jaunty patch: http://launchpadlibrarian.net/19932301/alsa-utils_1.0.18-1ubuntu2.debdiff - Intrepid SRU patch: http://launchpadlibrarian.net/19932317/alsa-utils_1.0.17-0ubuntu3.debdiff + Jaunty patch: http://launchpadlibrarian.net/19941444/alsa-utils_1.0.18-1ubuntu2.debdiff + Intrepid SRU patch: http://launchpadlibrarian.net/19941520/alsa-utils_1.0.17-0ubuntu3.debdiff TEST CASE: From an active GNOME session in a default Ubuntu 8.10 install, choose to reboot or shutdown. Note the erratic hang while attempting to store ALSA's mixer control state. Regression potential: No regressions have been identified in production, - and only users with libasound2-plugins installed have the potential to - experience this nondeterministic hang. + and only users with both pulseaudio and libasound2-plugins packages + installed have the potential to experience this nondeterministic hang. Original report follows: Ubuntu 8.10 beta 4 version updated. When going for reboot or shutdown the system freezes on shuting down alsa. The only way is to use the power off button of the computer. My laptop is Insys GameForce.8761SU Chipset: • SiS© 671DX + SiS968
-- MASTER storing ALSA mixer element values during shutdown hangs nondeterministically due to internal alsa-plugins pulse check https://bugs.launchpad.net/bugs/274995 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
