On Mon, 7 Aug 2006, Steve wrote: > Hello! I've searched the lists, and have often found this problem > reported, but with no solutions (or none that seem to work for me). > Hopefully someone can help me out. :) > > I have a new Maxtor external 300GB usb hard disk. I was able to use it as > a high-speed USB2 device with kernel 2.6.16.1, however, when I recently > upgraded to 2.6.17.4, ehci-hcd fails to connect to the drive, instead it > times out with: > > usb 1-2: khubd timed out on ep0in len=18/64 > usb 1-2: khubd timed out on ep0out len=0/0 > etc. (all the details in the attached text files) > > Again, in /var/log/messages I find there are many repetitions: > usb 1-2: new high speed USB device using ehci_hcd and address 2 > etc > > (where the address increments about every 12 secs never stopping) > > (It seems the USB hub is given a device no., but never the attached > drive.) > > When I reverted to the kernel 2.6.16.1, everything works fine again at > high speed. I tried the 2.6.16.24 kernel, and found that it is also > broken. For now I am remaining with 2.6.16.1. I'm not able to test > every minor kernel revision between 1 and 24, so I'm not sure what > changes. :) But it does seem there is a problem that enters after > 2.6.16.1 (or else a correction that foils my broken hardware?) > > I have attached debugging output from messages/debug from both 2.6.16.1 > (which works) and 2.6.17.4 (which doesn't). (PS. Is this the appropriate > list?) I have also attached the output of lsusb from both kernel > versions. > > I am using an Averatec 3225H/S laptop, (VIA chipset, which apparently has > some irq problems regarding USB? but don't think this is related), and I > run slackware-current. I have tried booting with "acpi=off noapic" and > "acpi=noirq", which has had some success with others, but unfortunately > not with me (nor which I require for 2.6.16.1 to work properly with usb2). > > Any thoughts?
Judging from your logs, it looks like this might be a problem with the VIA interrupt handling in the later kernels. By the way, you don't need to try _every_ kernel between 2.6.16.1 and 2.6.16.24 to pinpoint the breakage. Binary search is a very effective technique. Alan Stern ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
