At Sun, 30 Nov 2003 11:28:04 -0500, David Ronis wrote: > > --text follows this line-- > > I've been complaining for several months about Oops's, lockups, etc., > on my Sony Viao Z5050S laptop. Sometimes I would simply freeze, > sometimes I got an oops (several of which have been posted), and last > week, I actually got some sound, albeit very corrupted. > > Last night I did a CVS update, rebuilt and installed, and promptly > froze when I tried to use sound. (I have things set up to have the > modules loaded and unloaded automatically). I was in X (gnome), and a > second USB mouse installed, and a PCMCI modem card plugged in. > > After unplugging all the add-in devices and rebooting, I decided to > give alsa another try, hoping at least to get the poor-quality sound I > had in the last version or perhaps an oops. To my suprise it worked > PERFECTLY! What was different, is that I tried alsa before plugging > any of the other devices in and before starting X. Moreover, once > alsa's modules were installed, everything else could be installed and > the system seems stable. > > Could the problem may have something to do with the fact that IRQ9 > is shared on this machine? Here's what /proc/interrupts says: > > 9: 72787 XT-PIC Ricoh Co Ltd RL5c475, eth0, usb-uhci, NM256AV > > I've copied the output of lshw below. You'll notice lots of things use IRQ9. > > Any suggestions?
the combination of USB and this chip is really bad, especially when USB device is not initialized. this will issue unprocessed interrupts. also, starting ALSA nm256 driver after X is problematic, too, since X will break the video RAM area, which is shared with the sound driver as a sound buffer. hence, USB -> ALSA -> X would the best order of initialization, i guess. Takashi ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
