On Thu Mar 20 2003 at 01:19, Thomas Rump wrote: > by searching the internet how to enable 'dma' for playing 'dvd' in > "RedHat-8.0" i found that passage to add the line: "options ide-cd > dma=1" to '/etc/modules.conf'. But with that line in m.conf and a real > new start (may be next day) i have no chance for an functionable > 'gnome-desktop', either the panel is lost or the 'redhat-logo' in the > middle of the screen don't disappear by starting 'X'. If i delete this > line in 'modules.conf' starting is possible again. > > For a little help i would be glad. Using that option works for me for my ide dvd drive. I also have a scsi cdrw and another ide cdrom. You might need to narrow down the dma=1 setting to the specific ide device for your dvd. You can do some diagnosis of the problem by using the hdparm utility. For example, if your dvd is on /dev/hdc then this will allow you to quickly check the dma settings: $ hdparm -d /dev/hdc /dev/hdc: using_dma = 0 (of) This command will enable it: $ hdparm -d 1 /dev/hdc /dev/hdc: setting using_dma to 1 (on) using_dma = 1 (on) If you can't get the dma=1 switch to work at bootup, then you could resort to doing this in /etc/rc.d/rc.local... hdparm -d 1 /dev/hdc > /dev/null 2>&1 I happen to have a dvd/cdrw combo on /dev/hdc and a cdrom on /dev/hdd, so I want to turn the dvd into an emulated scsi device (on /dev/scd0) and leave the cdrom as ide. In /etc/modules.conf I do it something like this: add above cdrom ide-cd options ide-cd dma=1 ignore=/dev/hdc add above ide-cd ide-scsi The interesting thing is that the ide-scsi module seems to automatically enable dma when it is used. Hint: $ ln -s hdc /dev/dvd (This is for subsequent usability with utilities such as xine that look for this file to find the dvd device. Note that in my particular case, /dev/dvd is a symlink to /dev/scd0). > Thomas Rump Cheers Tony ---*#*=-=*#*=-=*#*=-=*#*=-=*#*=-=*#*=- Tony Nugent <Tony*linuxworks.com.au> LinuxWorks Gold Coast Qld Australia -- Psyche-list mailing list Psyche-list@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/psyche-list
