Tested on two computers & different usb hardware & hd's. An 8.04LTS install developed this problem. I tried a 8.1 Live CD with 2.6.27-7-generic which worked as expected.
The fresh install of 8.1 worked until updated less than an hour later after installing all the latest updates (inc 2.6.27-9-generic), booting from previous kernel -7 from grub does not fix the problem (same in 8.04LTS) uname reports kernel -7 & rebuilding initrd is -9 not -7? setting max_sectors seems to make a difference. sudo modprobe -r ehci_hcd / blacklist doesn't seem to do much on 8.1, as It still seems to be using it: usb 4-2: new full speed USB device using uhci_hcd and address 4 HD log while copying large files 10GB + backups: time it takes goes from minutes to days,,,, copying freezes before usb reset usb 5-8: reset high speed USB device using ehci_hcd and address 7 sd 9:0:0:0: [sdf] Sense Key : No Sense [current] sd 9:0:0:0: [sdf] Add. Sense: No additional sense information usb 5-8: reset high speed USB device using ehci_hcd and address 7 sd 9:0:0:0: [sdf] Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK,SUGGEST_OK __ratelimit: 1451 callbacks suppressed lost page write due to I/O error on sdf1 JBD: Detected IO errors while flushing file data on sdf1 Probably related: USB dvd writer is recognised sometimes and appears to work occasionally goes really slow. or just produces reset error with increasing address number. sorry haven't got round to test, as I am more interested in getting a reliable working usb hd backup. -- ehci_hcd module causes I/O errors in USB 2.0 devices https://bugs.launchpad.net/bugs/88746 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
