Date: Wed, 02 Dec 2009 11:02:58 -0500 From: Charles Owens <cowens@greatbaysoftware.com> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-hardware@freebsd.org Subject: Re: USB bus setup error with PAE (was USB keyboard flaky with PAE kernel, 7.1) Message-ID: <4B168FB2.6020509@greatbaysoftware.com> In-Reply-To: <200912020943.15200.jhb@freebsd.org> References: <4B070F07.8010600@greatbaysoftware.com> <4B156C80.7090706@greatbaysoftware.com> <200912020943.15200.jhb@freebsd.org>
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John Baldwin wrote: > On Tuesday 01 December 2009 2:20:32 pm Charles Owens wrote: > >> Charles Owens wrote: >> >>> Howdy, >>> >>> I'm still digging into it, put preliminary testing is showing that >>> with a PAE-enabled 7.1-RELEASE-p8 kernel a USB keyboard functions only >>> occasionally, if you're lucky. This flakiness is being seen with >>> several different server models that we support (HP and IBM, all Xeon >>> based). If we boot a non-PAE kernel then the USB keyboard is rock solid. >>> >> My initial report was entirely too broad --- an unrelated problem was >> confusing things. I can now report that this problem appears limited to >> only the IBM System x3550 M2. With a PAE-enabled kernel initialization >> of some of the USB buses fails. From an external perspective, this >> results in the rear USB port being non-functional, while the two front >> USB ports work fine. For some reason, though, when booting the same PAE >> kernel from a CD none of the USB ports function. >> >> In previous posting ( >> http://docs.freebsd.org/cgi/mid.cgi?4B0D14CB.1010000 ) I included output >> of usbdevs and boot log when running the PAE-enabled kernel. Note the >> "root hub error" messages in boot log. >> >> Below I'll repeat the same info when running a non-PAE kernel. >> >> Any thoughts as to what the story is here... and suggestions for >> resolution? Thanks in advance. >> > > Would you be able to test an 8.0 kernel with PAE enabled? 8.0 has a > completely rewritten USB stack, so there is a chance that the bug in 7 might > not be present in 8. You can also try posting on freebsd-usb@ since the folks > working on the USB drivers tend to hang out on that list. > Good suggestions... I'll proceed with both. Thanks, Charles
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