On Sun, 12 Feb 2006, Tim Dijkstra wrote: > Hi, > > [ I also send this to linux-acpi, but that didn't get any response, > Maybe it's more OT here anyway ...] > > If I try to go to S3 (echo mem > /sys/power/state), with the uhci_hcd > loaded everything seems to go fine except that there's an immediate > resume. I wonder if that has something to do with USB* being ACPI > wakeup devices. > > Feb 2 20:09:54 commensaal kernel: ACPI wakeup devices: > Feb 2 20:09:54 commensaal kernel: PCI0 PCI1 USB0 USB1 USB2 SU20 LAN > > > Anyway, I tried to work around that problem by rmmod'ing uhci_hcd before > suspend, and modprobing afterwards. This seems to work except that > everything having to do with USB being really slow (I have a CF-reader > that takes ages to mount, and then is really slow in transferspeed.) > > Now if use pci-config (it's by Donald Becker, > http://www.scyld.com/diag/index.html) > to check the status, it tells me that the device is in state D3. > > If I check /sys/..../power/state it contains 0. > > Now this program also has a --wake option, so I was adventurous and > tried it on the usb devices. And that helped! pci-config reports state > D0 and my CF-reader works at full speed! > > IMHO this is a bug, but I don't know if it's in the usb or acpi part. Anyway, > if you need more info let me know. For now I'll attach my lspci-vvv.
First: Which version of the kernel are you using? Second: Please try rebuilding the USB drivers with CONFIG_USB_DEBUG turned on, and post the dmesg log showing what happens during the suspend and subsequent resume. Alan Stern ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
