This was corrected and is no longer happening to me. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to alsa-lib in Ubuntu. https://bugs.launchpad.net/bugs/1687353
Title: System freezes due to ALSA error and recovers after significant time Status in alsa-lib package in Ubuntu: Confirmed Bug description: Hello I have a Lenovo Ideapad 310. I was having issues with power management, and was using upstream kernels. I noticed they had frequent freezes, so I decided to use the standard from Ubuntu 16.04 (today, 4.4.0-75). But now it has this freezes too, so something which was bugged on the newer kernel was inserted on 4.4.0-75, as previous version (4.4.0-72) hadn't this issue. What is happening is: the system freezes. The sound that was being played loops endlessly. Everything freezes, Ctrl+Alt+Fnumber don't work. The system completely stops. Normally, I would just power the computer off keeping the power button pressed. But this time I tried to recover it, as the syslog ended always corrupted. I needed to gets the logs at least once. So I started to disconnect hardware parts: battery charger, external USB HDD (it was not being accessed), USB mouse, USB keyboard. When I disconnected the sound jack, I noticed the mouse moved, so it was recoverable. I waited for 100 seconds until the system recovered. When it recovered, looked like nothing had happened, and now I'm writing this report from the computer, without restarting. Steps to reproduce: 1) open Audacious or VLC; 2) play a music/video on Audacious or VLC; 3) open another program with sound (Steam, a browser (I use Opera), etc); 4) use the computer until a freeze happens. Observations: -Audacious + Steam + Starbound is nearly 100% chance of triggering it (SDL?). -VLC + Opera + Firefox (on start page) was enough for trigger it once, even with the only program with media opened being VLC. The freeze I was able to recover had: Opera Developer (YouTube video playing) + Audacious (playing) + Steam with audio streams opened on pavucontrol. Additionally, Thunderbird and Evince were opened, and intel-gpu-overlay was opened inside a Xnest window. The syslog says to report to alsa, so I'm writing the report here. However, it should be noted that there is a i915 error too, maybe it was a consequence, maybe it was the cause. $ lsb_release -rd Description: Ubuntu 16.04.2 LTS Release: 16.04 $ uname -a Linux usuario-Lenovo-ideapad-310-14ISK 4.4.0-75-generic #96-Ubuntu SMP Thu Apr 20 09:56:33 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux Thank you. Edit: one thing I noticed with indicator-multiload, the internal HDD activity completely stopped while this problem was happening and soon after it started to function. It was like the computer was recovering with the internal HDD turned off. The HDD usage ramped up and the system returned to normal. May this be related with the power management issues? ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: libasound2 1.1.0-0ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-75.96-generic 4.4.59 Uname: Linux 4.4.0-75-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 CurrentDesktop: XFCE Date: Sun Apr 30 23:43:29 2017 Dependencies: gcc-6-base 6.0.1-0ubuntu1 libasound2-data 1.1.0-0ubuntu1 libc6 2.23-0ubuntu7 libgcc1 1:6.0.1-0ubuntu1 InstallationDate: Installed on 2016-12-31 (121 days ago) InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) SourcePackage: alsa-lib UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-lib/+bug/1687353/+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
