interesting note though. I tried karmic alpha 3 and it fixes all my usb problems. tested the live cd quite extensively.
2009/7/31 Lukáš Chmela <lukaschm...@gmail.com>: > Forest Bond píše v Pá 31. 07. 2009 v 12:28 +0000: >> Hi Jirka, >> >> On Fri, Jul 31, 2009 at 09:49:38AM -0000, Jirka Vilim wrote: >> > ** Changed in: linux (Ubuntu Jaunty) >> > Status: In Progress => Fix Committed >> >> Fix committed? Can you provide any information about the fix? >> >> Thanks, >> Forest >> -- >> Forest Bond >> http://www.alittletooquiet.net >> http://www.pytagsfs.org >> > > Well, I spoke to Jirka and he said it was just a mistake when he was > finding solution to his problem. > > I'll revert the change back. > > -- > Lukáš Chmela <lukaschm...@gmail.com> > IRC: kyselejsyre...@irc.freenode.org, ICQ: 202077459 > 514D 3C69 8498 E400 0ACE 90F2 00E3 CACA A5BA ECC7 > > > ** Changed in: linux (Ubuntu Jaunty) > Status: Fix Committed => In Progress > > -- > 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 direct subscriber > of the bug. > > Status in The Linux Kernel: Confirmed > Status in “linux” package in Ubuntu: In Progress > Status in “linux-source-2.6.20” package in Ubuntu: Won't Fix > Status in “linux-source-2.6.22” package in Ubuntu: Won't Fix > Status in linux in Ubuntu Hardy: Confirmed > Status in linux-source-2.6.20 in Ubuntu Hardy: Won't Fix > Status in linux-source-2.6.22 in Ubuntu Hardy: Won't Fix > Status in linux in Ubuntu Intrepid: Confirmed > Status in linux-source-2.6.20 in Ubuntu Intrepid: Won't Fix > Status in linux-source-2.6.22 in Ubuntu Intrepid: Won't Fix > Status in linux in Ubuntu Jaunty: In Progress > Status in linux-source-2.6.20 in Ubuntu Jaunty: Won't Fix > Status in linux-source-2.6.22 in Ubuntu Jaunty: Won't Fix > Status in “linux-source-2.6.22” package in Baltix: Invalid > Status in “linux” package in Fedora: Invalid > > Bug description: > Certain USB devices do not work properly, or do not work at all, while the > ehci_hcd module is loaded. > > A solution is to unload the ehci_hcd module, which is loaded every time the > computer starts, using the command 'sudo modprobe -r ehci_hcd'. This works > fine but unfortunatly ehci-hcd is necessary for using USB 2.0, so you lose > USB 2.0 features. > Another solution is to disable USB 2.0 through the BIOS setup. > > With some devices it is possible to read files normally (ie. copy files from > an USB pendrive to the computer), but the device disconnects abrubtly when > you start writing data on the device. In some devices it fails after writing > a certain amount of data, probably the size of the write cache. > > Steps to reproduce: > 1. Insert your USB 2.0 device (like a flash drive) > 2. If the device is recognised and mounted properly try copying a file to it. > 3. Comfirm with the 'dmesg' command that it isn't functioning properly. (I/O > errors etc) > 4. Remove the USB device > 5. Unload ehci_hcd with 'sudo modprobe -r ehci_hcd' > 6. Insert your USB device again. > 7. Check that everything works. (copy some files, etc.) > > A disproportionate number of individuals report Alcor chipsets in the > problematic behavior. See: > https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/88746/comments/62 > https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/88746/comments/119 > https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/88746/comments/299 > https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/88746/comments/397 > http://bugzilla.kernel.org/show_bug.cgi?id=ehci_hcd > > Noted Workarounds: > https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/88746/comments/372 > > > -- nwadams -- 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 ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
