[lkml]   [2000]   [Nov]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectProblem with NM256 and APM
I have a problem with APM interfering with sound playback through a
NeoMagic 256.

If I have sound playing, and do a "cat /proc/apm" I get a noticeable
glitch in sound playback. The glitch sounds like playback skips
backwards by a fraction of a second.

The machine is a Dell Latitude CS, and I have seen this problem on
2.2.17 and 2.4.0test11.

The anonymous author of the NM256 driver claims to have not seen this
problem before.

dmesg says:

apm: BIOS version 1.2 Flags 0x03 (Driver version 1.13)
NeoMagic 256AV/256ZX audio driver, version 1.1
NM256: Found card signature in video RAM: 0x3fec00
NM256: Mapping port 1 from 0x3e6c00 - 0x3fec00
Initialized NeoMagic 256ZX audio in PCI native mode
Initialized AC97 mixer
Done installing NM256 audio driver.

Any clues as to what might be behind this?


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
Please read the FAQ at

 \ /
  Last update: 2005-03-22 12:47    [W:0.020 / U:6.936 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site