Jacob Meuser wrote: > On Mon, Feb 09, 2009 at 12:40:31AM +0000, Owain Ainsworth wrote: > > On Sun, Feb 08, 2009 at 05:11:16PM -0500, Brad wrote: > > > Please test the following diff with any azalia(4) adapter, but especially > > > with any ATI or NVIDIA chipsets. Make sure sound still works properly > > > without any unusual sound artifacts. > > > > Surely this isn't much of an improvement. At least only map uncached > > on the hardware that needs it. Why give non-broken chips the cpu-time > > hit? > > I recently got some reports of broken sound with azalia, all with > amd64.mp with nVidia chipsets. at least two of the reports said > that this is a new problem, that the devices were working properly > a couple months ago. one (not sure if it was working before) was > fixed by switching from enabling pcie snoop to enabling > BUS_DMA_NOCACHE. haven't heard back from the others yet.
Not sure, but looks like we have had similar problem before 4.5 (see kernel/5998). Alexey
