Messages in this thread | | | Date | Tue, 01 Nov 2005 10:54:55 +0100 | From | Patrizio Bassi <> | Subject | Re: [BUG 2579] linux 2.6.* sound problems |
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Ondrej Zary ha scritto:
> Patrizio Bassi wrote: > >> Ray Lee ha scritto: >> >>> On Mon, 2005-10-31 at 18:04 +0100, Patrizio Bassi wrote: >>> >>> >>>>> On 10/31/05, Patrizio Bassi <patrizio.bassi@gmail.com> wrote: >>>>> >>>>> >>>>>> starting from 2.6.0 (2 years ago) i have the following bug. >>>>>> link: http://bugzilla.kernel.org/show_bug.cgi?id=2579 >>>>> >>> >>> >>>>>> fast summary: >>>>>> when playing audio and using a bit the harddisk (i.e. md5sum of a >>>>>> 200mb >>>>>> file) i hear noises, related to disk activity. more hd is used, >>>>>> more chicks >>>>>> and ZZZZ noises happen. >>>>> >>>>> >>>>> Does hdparm -i (or -I) show differences between the 2.4 kernels and >>>>> 2.6? 2.6 has new IDE drivers, and so perhaps your system isn't using >>>>> the best driver any more. >>>>> >>>>> You may also want to compare lspci -vv of your IDE controller and >>>>> sound card between 2.4 and 2.6, and see if there are any differences. >>>>> >>>>> No guarantees, but this is where you'd start. >>>>> >>>>> >>>>> >>>>> >>>>>> Ready to test any patch/solution. >>>>> >>>>> >>>>> >>>>> Try that. If nothing obvious appears in the examination, you may want >>>>> to try the 2.6.14-rt1 patchset from Ingo Molnar. It's designed to >>>>> reduce latency in the kernel, but also has a latency tracer that may >>>>> be particularly useful for your problem. (Assuming it's a latency >>>>> issue, and not a hardware misconfiguration due to 2.6 doing something >>>>> wrong.) >>>> > > I've seen something like this yesterday on ECS P6EXP-Me board (i440EX > chipset) with onboard CMI8338 PCI sound chip. The sound was distorted > when e.g. moving mouse in Windows. When I disabled "PCI 2.1 support" > in BIOS, the problem disappeared in Windows. But when I booted Slax > LiveCD, the same problem appeared - so I think that Linux enables > something that's causing these problems with some PCI sound devices on > these chipsets. > i played a bit with bios, but no luck. considering that in my windows copy i have no problems, i'm sure it's linux 2.6
update: can't use linux 2.4, i have nptl only and acpi problems too. i'll play with timers and latency - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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