On Thursday 10 March 2005 5:45 pm, Shiju Mathew wrote: > Hi Dave, > Here are the details. But I could find that the content of > /sys/class/usb_host/usb1/periodic remained the same before and after > playing the audio with buzz.
Before and after it _should_ be the same unless you've plugged or unplugged something, or are otherwise changing the set of active I/O requests. This basically shows a tree of interrupt transfers; I'd guess a couple high speed hubs and some kind of full speed HID device, maybe a volume control. What I'd need to see is _during_ the play-with-buzz, when there will be "sitd" entries not just "qh" ones. - Dave > [EMAIL PROTECTED] ~]# cat /sys/class/usb_host/usb1/periodic > size = 1024 > 31: qh32-0601/ce4b5300 (f6 ep3in [8/15] q1 p4) > 63: qh32-0601/ce4b5300 > 95: qh32-0601/ce4b5300 > 127: qh32-0601/ce4b5300 > 159: qh32-0601/ce4b5300 > 191: qh32-0601/ce4b5300 > 223: qh32-0601/ce4b5300 > 255: qh256-0001/ce4b5100 (h3 ep1in [7/0] q1 p1) qh256-0001/ce4b5200 > (h5 ep1in [7/0] q1 p1) qh32-0601/ce4b5300 > 287: qh32-0601/ce4b5300 > 319: qh32-0601/ce4b5300 > 351: qh32-0601/ce4b5300 > 383: qh32-0601/ce4b5300 > 415: qh32-0601/ce4b5300 > 447: qh32-0601/ce4b5300 > 479: qh32-0601/ce4b5300 > 511: qh256-0001/ce4b5100 > 543: qh32-0601/ce4b5300 > 575: qh32-0601/ce4b5300 > 607: qh32-0601/ce4b5300 > 639: qh32-0601/ce4b5300 > 671: qh32-0601/ce4b5300 > 703: qh32-0601/ce4b5300 > 735: qh32-0601/ce4b5300 > 767: qh256-0001/ce4b5100 > 799: qh32-0601/ce4b5300 > 831: qh32-0601/ce4b5300 > 863: qh32-0601/ce4b5300 > 895: qh32-0601/ce4b5300 > 927: qh32-0601/ce4b5300 > 959: qh32-0601/ce4b5300 > 991: qh32-0601/ce4b5300 > 1023: qh256-0001/ce4b5100 > [EMAIL PROTECTED] ~]# cat > /sys/class/usb_host/usb1/driver/0000\:00\:1d.7/usb1/version > 2.00 > > Shiju > > > > > On Wed, 9 Mar 2005 21:33:06 -0800, David Brownell <[EMAIL PROTECTED]> wrote: > > On Wednesday 09 March 2005 4:02 pm, Shiju Mathew wrote: > > > Hi, > > > I have tried the two patches singly and together . But it did not > > > resolve the usb audio problem. > > > > Well that's annoying. Thanks for trying those; I can't really do > > much to track this down, since I can't reproduce this. Can you do me a > > favor and show me the contents of /sys/class/usb_host/usb1/periodic > > while it's making that buzz? Where I'm assuming "usb1" is your EHCI, > > and you've compiled with CONFIG_USB_DEBUG. > > > > - Dave > > > > > > > Shiju > > > > > > > > > On Wed, 9 Mar 2005 09:12:57 -0800, David Brownell <[EMAIL PROTECTED]> > > > wrote: > > > > On Wednesday 09 March 2005 1:17 am, Shiju Mathew wrote: > > > > > Hi, > > > > > When I connect the usb audio(CM108) to a USB 2.0 hub which inturn is > > > > > connected to the system root hub, the audio quality is very bad. I > > > > > hear a audible buzz . ... > > > > > > > > http://marc.theaimsgroup.com/?l=linux-usb-devel&m=111022243725297&w=2 > > > > > > > > has two patches to try. > > > > > > > > > > > > -- > Regards, > Shiju > > > ------------------------------------------------------- > SF email is sponsored by - The IT Product Guide > Read honest & candid reviews on hundreds of IT Products from real users. > Discover which products truly live up to the hype. Start reading now. > http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click > _______________________________________________ > linux-usb-devel@lists.sourceforge.net > To unsubscribe, use the last form field at: > https://lists.sourceforge.net/lists/listinfo/linux-usb-devel > ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
