I just hit this when trying to downloading images from my camera. I am using the workaround for Bug #88746 (modprobe -r ehci_hcd). Not sure if this is related.
[ 539.804000] hub 2-0:1.0: port 2 disabled by hub (EMI?), re-enabling... [ 539.804000] usb 2-2: USB disconnect, address 2 [ 540.168000] usb 2-2: new full speed USB device using uhci_hcd and address 3 [ 540.332000] usb 2-2: configuration #1 chosen from 1 choice [ 577.860000] uhci_hcd 0000:00:1d.1: host controller process error, something bad happened! [ 577.860000] uhci_hcd 0000:00:1d.1: host controller halted, very bad! [ 577.860000] uhci_hcd 0000:00:1d.1: HC died; cleaning up [ 577.860000] usb 2-2: USB disconnect, address 3 $ uname -a Linux snowcrash 2.6.20-16-generic #2 SMP Thu Jun 7 20:19:32 UTC 2007 i686 GNU/Linux $ lspci 00:00.0 Host bridge: Intel Corporation Mobile 915GM/PM/GMS/910GML Express Processor to DRAM Controller (rev 03) 00:01.0 PCI bridge: Intel Corporation Mobile 915GM/PM Express PCI Express Root Port (rev 03) 00:1c.0 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 1 (rev 03) 00:1c.1 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 2 (rev 03) 00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1 (rev 03) 00:1d.1 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #2 (rev 03) 00:1d.2 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #3 (rev 03) 00:1d.7 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller (rev 03) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev d3) 00:1e.2 Multimedia audio controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller (rev 03) 00:1e.3 Modem: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Modem Controller (rev 03) 00:1f.0 ISA bridge: Intel Corporation 82801FBM (ICH6M) LPC Interface Bridge (rev 03) 00:1f.1 IDE interface: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) IDE Controller (rev 03) 01:00.0 VGA compatible controller: ATI Technologies Inc M24 1P [Radeon Mobility X600] 02:04.0 Network controller: Intel Corporation PRO/Wireless 2915ABG Network Connection (rev 05) 02:06.0 CardBus bridge: Texas Instruments PCIxx21/x515 Cardbus Controller 02:06.2 FireWire (IEEE 1394): Texas Instruments OHCI Compliant IEEE 1394 Host Controller 02:06.3 Mass storage controller: Texas Instruments PCIxx21 Integrated FlashMedia Controller 02:06.4 Generic system peripheral [0805]: Texas Instruments PCI6411/6421/6611/6621/7411/7421/7611/7621 Secure Digital Controller 02:06.5 Communication controller: Texas Instruments PCI6411/6421/6611/6621/7411/7421/7611/7621 Smart Card Controller 10:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5751M Gigabit Ethernet PCI Express (rev 11) -- [gutsy] USB host controller dies https://bugs.launchpad.net/bugs/122723 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
