On Sat, 2004-10-30 at 11:10 -0700, Jon Cortelyou wrote: > Good news on the DVD play back issues I was having with my iBook > running Ubuntu Linux v4.10. > > First I have to type: hdparm -d1 /dev/hdb > this turns on UDMA2 for my DVD-ROM > Where would I put this command so it is done automatically at boot up?
It should be done automatically at boot, I suspect something is switching DMA off, that happens with some errors, which is imho a bug in the ide-cd layer of the kernel. If you can identify what command exactly is causing it to be turned off, let me know. > > I'm getting a 'popping/clicking' sound when the DVD plays loud sounds. > The popping occurs over the iBook's speakers and via headphones. I > tried adjusting the volume but even at low volume I hear > audible popping. It seems like the audio is clipping. It happens at > all volume levels. gxine and xine-ui both have this problem. I'm > using the ALSA sound modules that (I think) emulates OSS? Tried disabling DRC ?
