Date: Sat, 4 Dec 2010 14:40:23 +0000 From: Bruce Cran <bruce@cran.org.uk> To: freebsd-usb@freebsd.org Subject: "Autosense failed" - I/O stops on SD card reader Message-ID: <20101204144023.2f4be1a5@core.draftnet>
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Hi, I've been having problems with a card reader (http://www.frontier-electronics.co.za/stor_sdr012.htm) and an 8GB SD card (http://www.amazon.co.uk/Transcend-SDHC-Class-Flash-Memory/dp/B000P9ZBFA) I'm trying to use. FreeBSD 9-CURRENT will regularly display the following error which causes all IO to stop: (da0:umass-sim0:0:0:0): AutoSense failed g_vfs_done():da0s1[READ(offset=6782976, length=36864)]error = 5 vnode_pager_getpages: I/O read error vm_fault: pager read error, pid 2986 (cp) I tried setting hw.usb.umass.debug=1 but there was no extra debug output; setting hw.usb.ehci.debug=1 or hw.usb.debug=1 results in lots of output that I'm not sure is useful. What would I need to do to help debug what's going wrong? -- Bruce Cran
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