On Fri, 26 Jun 2009, abhishekkumar wrote: > PFA I am attaching dmesg file taken from /var/log/ and also the lines > which I got from dmesg command in different file named dmesgafter.txt. I still don't see any lines about the headphone device in the log. Was the headphone plugged in during boot, or did you plug it in later? > Then , periodic and registers files and also the usbmon log. Here's what your "registers" file says: > bus ps3_system_bus, device sb_05 (driver 10 Dec 2004) > PS3 EHCI Host Controller > EHCI ff.ff, hcd state 1 > structural params 0xffffffff > capability params 0xffffffff > status ffffffff Async Periodic Recl Halt IAA FATAL FLR PCD ERR INT > command ffffffff park=3 ithresh=63 LReset IAAD Async Periodic period=?? Reset R > intrenable ffffffff IAA FATAL FLR PCD ERR INT > uframe ffffffff > port 1 status ffffffff POWER OWNER sig=? RESET SUSPEND RESUME OCC OC PEC PE CSC > port 2 status ffffffff POWER OWNER sig=? RESET SUSPEND RESUME OCC OC PEC PE CSC > irq normal 30832 err 30 reclaim 84 (lost 1) > complete 31221 unlink 10 This is very bad. It indicates that the CPU was unable to communicate with the EHCI controller at all! All the memory-mapped I/O reads returned 0xffffffff. No wonder the keyboard and mouse stopped working. I have no idea what could have caused this to happen. Even if the controller had suffered a fatal error, you wouldn't see this. It looks like the bus's connection to the controller was turned off. I'm CC-ing the PS3 maintainer and mailing list. Maybe people there can help. > I am even not able to kill the application because it's not showing when > I use top command. > > I addition to that I get some messages during boot up . they are > Unable to accept address for port 1 (error -62) > usb cable may be bad > Unable to accept address for port 2 (error -62) Those are normal. They occur because your system loads ohci-hcd before ehci-hcd. It should load ehci-hcd first. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html