Messages in this thread | | | Date | Fri, 17 Mar 2000 10:08:52 -0800 (PST) | From | <> | Subject | Re: [linux-usb] 2.3.51 apm and usb uhci |
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On Fri, 17 Mar 2000, Johannes Erdfelt wrote:
> Does it go up at all? Interrupt make the processor do things. Also, > have you checked your BIOS for the power saving settings and USB's > IRQ?
The BIOS doesn't have specific setting for power in regards to USB. I'm not sure what you mean. In general, the BIOS is set to spin down the disk after 5 min, reduce the clock speed automatically, etc.
What IRQ should USB be using? Since it is on the PCI bus, shouldn't it use IRQ 9 (shared)?
Here is a what the interrupts look like. There isn't any big difference when I insert the usb-uhci module:
[root@tool /root]# while : ; do cat /proc/interrupts|grep eth0; sleep 2 ; done; 9: 1947639 XT-PIC Ricoh Co Ltd RL5c475, eth0 9: 1947640 XT-PIC Ricoh Co Ltd RL5c475, eth0 9: 1947641 XT-PIC Ricoh Co Ltd RL5c475, eth0 9: 1947642 XT-PIC Ricoh Co Ltd RL5c475, eth0 9: 1947647 XT-PIC Ricoh Co Ltd RL5c475, eth0 9: 1947647 XT-PIC Ricoh Co Ltd RL5c475, eth0, usb-uhci 9: 1947648 XT-PIC Ricoh Co Ltd RL5c475, eth0, usb-uhci 9: 1947649 XT-PIC Ricoh Co Ltd RL5c475, eth0, usb-uhci 9: 1947650 XT-PIC Ricoh Co Ltd RL5c475, eth0, usb-uhci 9: 1947651 XT-PIC Ricoh Co Ltd RL5c475, eth0, usb-uhci 9: 1947652 XT-PIC Ricoh Co Ltd RL5c475, eth0, usb-uhci
- brett
> > > Also, try using usb-uhci to see if it's a driver issue. > > > > Same problem. > > > > Any other ideas? > > The virtual root hub periodically polls the root hub ports to find > connect changes. > > Perhaps that is confusing the power management software? > > I don't see how that could, but the timer interrupt doesn't. > > JE > >
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