[Bug 591727] [NEW] Lucid: sleep / resume / alsa error causes system damage

Launchpad Bug Tracker 591727 at bugs.launchpad.net
Thu Jul 8 17:59:35 UTC 2010


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Hello, I run Kubuntu 10.04 on an Acer 4810T Centrino laptop with Intel-
everything compents.  I have a major bug to report that cost me several
hours of lost productivity yesterday.  Here are the approximate steps:

1. I was listening to music with Smplayer.
2. I suspended my laptop (to RAM) without shutting off Smplayer
3. I came back a few hours later, resumed the laptop
4. Immediately upon resuming the laptop started to play "broken record" garbled screeching noise at full volume from the speakers
5. I couldn't login (screen locked from suspend), there was just a black screen, and I couldn't control my computer at all or kill the process.  After about 30 seconds I was afraid my speakers would be ruined and I couldn't stand the noise anymore, so I did a hard power-off.
6. Upon reboot, I logged into my KDE desktop, and the network-manager-kde would not connect, when I clicked on the tray icon it said "Network Management Disabled".
7. I tried restarting NetworkManager service many times, rebooting the computer many times, and even re-installing the network-manager-kde package, but it refused to work, insisting that "Network Management Disabled".
8. I finally had to look up instructions to connect to the network via command line and uninstall and reinstall the whole network-manager stack of packages to regain GUI network management

This is a MAJOR meltdown of a system that is supposed to be a reliable
"long term service" release.  It indicates a failure on so many levels
that I don't even know which package to file this bug against.  ALSA
should have been stopped during the suspend process.  The system should
not be brought down by a runaway process.  And at any rate the
NetworkManager stack should be failsafe so as not to be destroyed in the
case of an unclean shutdown.  If I didn't have several years of Linux
experience under my belt I would have been forced to re-install the
entire system.

Thanks for the help with this bug, let me know if you need more
information please.

** Affects: linux (Ubuntu)
     Importance: Low
         Status: New

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Lucid: sleep / resume / alsa error causes system damage
https://bugs.edge.launchpad.net/bugs/591727
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