Red Hat Bugzilla – Bug 133865
error messages with HP 6300C scanner on USB
Last modified: 2013-03-05 22:41:26 EST
Starting cups with HP 6300C scanner connected on USB causes the kernel error message "usb 2-3: control timeout on ep0in" to be printed 5 times with about 5 seconds delay each. Sep 28 01:36:24 hostmaster cups: cupsd shutdown succeeded Sep 28 01:36:24 hostmaster kernel: hal[24383]: segfault at 0000000000000000 rip 0000000000400ec7 rsp 0000007fbfffd400 error 4 Sep 28 01:36:29 hostmaster kernel: usb 2-3: control timeout on ep0in Sep 28 01:36:44 hostmaster last message repeated 3 times Sep 28 01:36:45 hostmaster cups: cupsd startup succeeded
I forgot to mention the relevant package versions: cups-1.1.21-2, kernel-2.6.8.1, hal-0.2.98.cvs20040923-1
Comment #1 indicates that you are not using a Fedora kernel.
Warren: According to Alan Cox there is no general rule to discard bug reports from users of non Fedora supplied kernels. Additionlly this bug can be reproduced with kernel-2.6.8-1.541.x86_64 Tim: Alan thinks this is a bug in hal, as it is triggered by cups I initially attributed it to cups
I would be surprised if this was a bug in hal as we doesn't do anything for scanners. Does stopping the hal daemon, 'service haldaemon stop', stop this continual logging? Please try 'service haldaemon stop', and run 'hald --verbose=yes --daemon=no' and attach the output to this bug report. IF this succeeds please also attach the output of 'lshal'. Thanks, David
I have just traced this down to be a kernel problem, the error message occurs whenever reading /proc/bus/usb/devices, cups' canon driver does this on startup, hald every few seconds, I have filed a kernel bug: http://bugzilla.kernel.org/show_bug.cgi?id=3489
Thomas, thanks for figuring this out. In fact, I plan to change hal to not read the /proc/bus/usb/devices file since all that information is also in sysfs as of 2.6.6.