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Date: Tue, 22 Jul 2008 09:43:57 +0200 From: Nikola Ciprich <extmaillist@...uxbox.cz> To: linux-kernel@...r.kernel.org Cc: nikola.ciprich@...uxbox.cz, linux-usb@...r.kernel.org Subject: 2.6.22: USB getting stuck on SuperMicro PDSME+ boards Hi, I'm having problem with USB getting stuck on bunch of machines with PDSME+ boards (I haven't observed the problem on any other type of board. Controller identifies as 8086:27c8 (rev 01) - Intel Corporation 82801G (ICH7 Family) USB UHCI Controller Symptoms: - any process trying to access /proc/bus/usb/devices gets stuck in 'D' state - khubd seems to be stuck in 'D' state - USB devices don't work I'm observing the problem even on machines without any USB devs attached. Unfortunately I wasn't able to reproduce the problem on my testing machines I have on my disposal here (yet, but I'm still trying), and it's not affecting all PDSME+ boards we have deployed. The problem appeared after upgrading machines to 2.6.24 kernels, we haven't observed it on 2.6.21 we used before. On affected machines, kernel doesn't emit any OOPS, or anything else which could help to track. It just stops working after some time. Bad thing is that since I'm not able to reproduce the problem here and I cannot reboot/upgrade production machines too often, I can't provide much more information or try bisection :( So this is rather desperate attempt to ask if anyone had similar problem or has any tip on where should I look to track it. Kernels we're using are vanillas with few small unrelated patches applied. Any help would be greatly appreciated with best regards nik -- ------------------------------------- Nikola CIPRICH LinuxBox.cz, s.r.o. 28. rijna 168, 709 01 Ostrava tel.: +420 596 603 142 fax: +420 596 621 273 mobil: +420 777 093 799 www.linuxbox.cz mobil servis: +420 737 238 656 email servis: servis@...uxbox.cz ------------------------------------- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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