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Сергей posted on Wed, 13 Aug 2014 15:37:32 +0400 as excerpted: |
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> Hello everybody! When I listen to music using Amarok or Google Chrome |
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> flash player (didn't try any other players) sometimes sound freezes for |
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> a second. I have tried changing phonon backend (gstreamer/vlc) and also |
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> changing kernel parameter CONFIG_SND_HDA_PREALLOC_SIZE from 64 to 2048 |
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> and 4096. Disabling Pulseaudio or using it's older version also didn't |
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> help. |
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> Can you please give me a piece of advice about what to do? |
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On one older system I had, using PCI not the newer PCIE, there was a BIOS |
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setting for size of PCI transaction. I can't remember details such as |
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the exact name of the BIOS setting, but the idea was that this was the |
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largest PCI transaction allowed before it had to give up the bus and let |
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something else have a turn, if there were other things waiting, of |
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course. The tradeoff was between higher efficiency due to lower overhead |
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as more could be done at a time, and higher latency as one task had the |
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bus tied up for longer, keeping others waiting. |
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After I shortened that, the occasional problems with sound freezes I had |
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on that machine disappeared. I had tried other things such as increasing |
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buffer size, etc, that didn't work, but decreasing the PCI transaction |
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size and thus latency time did. |
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As for pulseaudio, I'd guess a lot of gentooers don't use it at all, |
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preferring direct alsa, etc. I know I've never used pulse here. |
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And for kde's phonon backend, while gstreamer is I believe the current |
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default, I don't have gstreamer installed at all here, but remember that |
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switching from the earlier xine backend to the vlc backend helped quite a |
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bit. However, that's likely to help only for kde apps. Firefox and |
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chrome of course aren't kde apps, tho amarok is (but tho I switched away |
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from amarok in the early kde4 period, IIRC it can be configured to use |
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either kde's phonon or direct alsa or pulse, so depending on how it's |
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configured it might not be going thru phonon either). |
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-- |
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Duncan - List replies preferred. No HTML msgs. |
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"Every nonfree program has a lord, a master -- |
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and if you use the program, he is your master." Richard Stallman |
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