On Tue, Jul 08, 2003 at 12:39:45PM +0800, Wan Tat Chee wrote: > Hi Greg, > > (I've installed 2.4.22-pre3 now) > > Yes, I do have ACPI enabled. That's the reason I went with the 2.4.22-preX > series, since ACPI is already incorporated (less patches). I'm not keen on > 2.5.x right now.... > > I found out (after lots of hangs and restarts) that the problem has to do > with the IRQ setting of the USB ports. I had the built-in Ethernet port > set to Auto in the BIOS (enabled only when on AC power or Ethernet cable > plugged in). When powering up in battery-only mode (eth0 disabled), the > USB IRQ was set to 10, while it is set to 9 in AC power mode (sharing with > eth0/8139too driver). > > The dmesg logs of both cases are attached. > > If the IRQ is 10, it will hang the machine hard (regardless of cold-boot, > warm-boot or after WinXP). > > Do the developers read this list, or else who can escalate this (I'm not > subscribed to the usb-devel list)?
It's not a USB problem, it's a acpi issue. Take it up with those developers... > Slightly offtopic, how much power does eth0 drain? I didn't set it to > "Always Enabled" previously but if it doesn't drain too much power I might > just enable it all the time to avoid the hangs. I don't know. I haven't rebooted my laptop in days, so I can't check to see what settings I have, sorry :) I do know it seems to be the brightness of the screen that is the biggest drain of power. Also, make sure you are running the proper cpu speed code, to drop down to the lower speed when nothing is happening. Good luck, greg k-h ------------------------------------------------------- This SF.Net email sponsored by: Parasoft Error proof Web apps, automate testing & more. Download & eval WebKing and get a free book. www.parasoft.com/bulletproofapps _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
