Re: Latitude LSt sound (nm256av/nm2200) freezes machine
- --- In firstname.lastname@example.org, simon+egroups@j... wrote:
> Hi, I recently bought a Latitude LSt and I can't seem to get soundand
> support working. I've upgraded BIOS to A04 since I noticed some
> audio-related fixed, but no changes.
> Dell web pages says this machine have a NeoMagic MagicMedia 256AZ
> a AC97Codec but this doesn't seem right, when I boot it says 256AV.Codec".
> Also, Win2000 device manager also says 256AV, and with a "NMA2
> Redhat 6.2's sndconfig autodetect a MagicMedia 256AV (nm256.o) but
> freeze the machine when it's loaded.
> OSS/Free soundconf autodetect a MagicMedia NM2200 but also freeze
> machine when it's loaded...the
> OSS/Free also did have a NM256AV NMA2 driver, but I've tried all
> combinations of IRQ/DMA channels without luck. Neither Win2k nor
> BIOS seem to print the IO address.This problem is caused by the NM256 driver writing to registers that
> Here's /proc/pci:
> Bus 1, device 0, function 1:
> Multimedia audio controller: Neomagic Unknown device (rev 32).
> Vendor id=10c8. Device id=8005.
> Medium devsel. Fast back-to-back capable. IRQ 10.
> Prefetchable 32 bit memory at 0xf7800000 [0xf7800008].
> Non-prefetchable 32 bit memory at 0xfea00000 [0xfea00000].
> Anyone with this machine?
> There is a page at http://www.divisionbyzero.com/laptop/, but it
> uses nm256 which just freeze my machine...
> Any help appreicated.
it shouldn't be under the Neomagic spec. I sat down with Dev Mazumdar
of 4Front Technologies today personally and ascertained this fact.
Fixing this problem involves modifying about 3 lines of code. I have
the same notebook and had the same problem, however it is now fixed.
Patched versions of the OSS/Commercial drivers should be up within a
few days with OSS/Lite patches following shortly thereafter.