Comment 6 for bug 882566
Revision history for this message
| Wojciech Musial (wmusial) wrote Re: Compal laptop: sound is breaking up | #6 |
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0e1f616
(Get the code!)
I also experience occasional key jams, when the system freezes during a key press, resulting in locking the repeat for 1-2 seconds.
Looking for a solution to the keyjam problem i have found the following [[http://
Quote:
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If your Ubuntu 9.10 seems to get slower and slower over time, meaning everything from drawing windows to playing video gets laggy and only reboot helps, your computer might have issues with its HPET clock source and/or some peripherals interfere with it. This workaround might fix it for you: in /etc/default/grub change line
GRUB_CMDLINE_
to be
GRUB_CMDLINE_
Then enter sudo update-grub and reboot.
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Quite surprisingly, this has resolved the crackling sound problem (on ubuntu 10.04). More surprisingly still, this has ALSO resolved long bootup times with AHCI turned on in bios.
However, i now experience something along the lines described in bug #571770 -- thread hd-audio0 consumes ~20% CPU at all times, but the sound plays clear.
I'd appreciate if someone could synthesize the information on symptoms, the workaround and the now secondary problem with hd-audio0, and point in the direction of solution of the fundamental cause.