Ubuntu
linux-source-2.6.20 package

  1. Bug #88746 (ehci-hcd)
  2. Comment #397

Comment 397 for bug 88746

Revision history for this message
Andy Rabagliati (andyr) wrote :

I have a brand new machine, with Intrepid installed on it. My hardware combination triggers this bug.

After reading this thread, and many others similar to it, I have narrowed my problem down to the boot time interaction of ehci_hcd and my Alcor Micro Corp. Hi-Speed 21-in-1 Flash Card Reader/Writer.

* Linux boxrd 2.6.27-9-generic #1 SMP Thu Nov 20 21:57:00 UTC 2008 i686 GNU/Linux
* rmmod ehci_hcd -- works
* kernel recompile with USB non-modularised -- doesn't work (was suggested elsewhere)
* echo 64 > /sys/block/sdh/queue/max_sectors_kb -- doesn't work (and 120 also doesn't work)
* rmmod uhci_hcd -- Doesn't work (besides disabling my USB keyboard - suggested elsewhere)
* Unplug Bus 004 Device 002: ID 058f:6362 Alcor Micro Corp. Hi-Speed 21-in-1 Flash Card Reader/Writer -- works
* Plug in Bus 004 Device 002: ID 058f:6362 Alcor Micro Corp. Hi-Speed 21-in-1 Flash Card Reader/Writer after boot -- works

Logs attached - lspci-vvnn.log, lsusb.log (including Alcor), dmesg.log (doesn't work) dmesg2.log (works)