Good day, I'm testing a USB2 hard drive box under 2.4.19-pre10 with mixed results, mostly lousy. I'm getting hard lockups (keyboard/touchpad nonresponsive, external access to running SSHD futile) in various circumstances which all seem to inhibit logging.
So how should I collect debug info to describe this to the list? Context: Sony Vaio Z505LS, Adaptec USB 2.0 cardbus card. Generic USB drivebox. http://www.directron.com/usbbox20.html (Box is well constructed but there evidently have been some problems since Directron gives return instructions right in the description!) Debian Woody for init scripts including hotplug. In-kernel PCMCIA compiled as modules, USB as modules. There is a memory stick slot in the machine that shows up as a usb-storage device on the Vaio's built-in USB1.1. Hotplug detects everything nicely. /proc/bus/usb drivers and devices is uninteresting. The 1.1 ports talk to everything I throw at them, including the hard drive box. Scenario #1: Hard lock if a partition on the USB drive is mounted while launching X; mounting after X is running is ok. The Z505LS has an ATI Rage Mobility chipset if that is relevant. Scenario #2: Hard lock at shutdown if a partition was mounted, then unmounted before shutting down. (Could there be a wrong order in umount, ehci unload, and pcmcia unload in the Debian scripts?) Scenario #3: Hard lock during cardctl eject unless there was never a drive plugged into the card. No difference if partitions are unmounted or mounted, or if rmmod ehci and rmmod usb-storage. In one case the lockup left the PCMCIA eject beep running; never heard a machine scream before! Another negative, possibly related to SCSI modules, is that unmount/unplug drive and replug drive sometimes gives a different drive letter and sometimes does not. I can get one scenario to work -- 1. Boot without the card inserted. 2. Launch X. 3. Insert the card. 4. Plug in the drive. 5. Mount a partition. 6. Do whatever. 7. Shut down X. 8. Leave the partition mounted and the card inserted, and poweroff. Interestingly, I don't have any problems with the same PC card and an external USB2 CD-RW drive. So if there is a hardware issue I must suspect the external hard drive box. I've tried three different hard drives in it; currently a UDMA2 western digital drive seems to be okay, and a UDMA5 (ATA-100) drive was least stable. I compiled a kernel on the UDMA2 drive. 9 megabytes/sec hdparm is not bad (and very adequate for my purposes), about what I'd get from the drive inside a desktop unit. Or does anyone have a specific USB2 drivebox to recommend? Any suggestions about debug approach? Appreciate your help. -- thanks, SP ------------------------------------------------------- This sf.net email is sponsored by: Jabber - The world's fastest growing real-time communications platform! Don't just IM. Build it in! http://www.jabber.com/osdn/xim _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
