Thank to http://www.thinkwiki.org/wiki/ThinkWiki! I solve this problem!
Solution: sudo bash echo level 15 >/proc/acpi/ibm/volume And this (http://www.thinkwiki.org/wiki/AD1981B) notes: Note 1 On some models (T40, T43p, ... R51e ...) audio is muted if either Headphone or Line Jack are unmuted. See also ALSA Wiki FAQ [1]. Also, if Headphone Sense or Line Jack Sense are unmuted audio is dead (R52, X40). By default the Sense settings are not shown in GNOME. Note 2 A bug was introduced in the 2.6.20 kernel (between the rc1 and rc2 releases) which causes the sound to stop working after hibernation. Rebooting does not seem to fix the problem. A quick work-around is to do a suspend-to-ram, and then wake the machine up. This issue is chronicled in this bug report on Launchpad.net: The fix changing HIBERNATE_MODE=shutdown to HIBERNATE_MODE=platform in /etc/default/acpi- support worked very well. I don't know if it possibly could introduce other bugs or if it's a true fix. https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/80893 -- very quiet sound on notebook IBM r40e https://bugs.launchpad.net/bugs/303789 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
