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Thread: pci 0000:00:02.0: BAR X: address space collision on of device

  1. #1
    Join Date
    Dec 2009
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    Question pci 0000:00:02.0: BAR X: address space collision on of device

    After searching the net I don't seem to get an appropriate answer, Could you please suggest what is going wrong ? I feel that my system is very slow.

    Code:
    root@prodcon:/home/prodcon# uname -a
    Linux prodcon 2.6.32-5-686 #1 SMP Mon Feb 25 01:04:36 UTC 2013 i686 GNU/Linux
    root@prodcon:/home/prodcon# cat /etc/debian_version 
    6.0.7
    Code:
    root@prodcon:/home/prodcon# grep collision /var/log/dmesg
    [    0.228573] pci 0000:00:02.0: BAR 1: address space collision on of device [0xe8000000-0xe807ffff]
    [    0.228731] pci 0000:00:1d.7: BAR 0: address space collision on of device [0xe8082000-0xe80823ff]
    [    0.228878] pci 0000:00:1f.5: BAR 2: address space collision on of device [0xe8083000-0xe80831ff]
    [    0.229002] pci 0000:00:1f.5: BAR 3: address space collision on of device [0xe8084000-0xe80840ff]
    root@prodcon:/home/prodcon# grep -i error /var/log/dmesg
    [    4.369772] PM: Error -22 checking image file
    root@prodcon:/home/prodcon# grep -i error /var/log/messages
    root@prodcon:/home/prodcon# grep -i collision /var/log/messages
    Code:
    root@prodcon:/home/prodcon# lspci 
    00:00.0 Host bridge: Intel Corporation 82845G/GL[Brookdale-G]/GE/PE DRAM Controller/Host-Hub Interface (rev 03)
    00:02.0 VGA compatible controller: Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 03)
    00:1d.0 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #1 (rev 02)
    00:1d.1 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #2 (rev 02)
    00:1d.2 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #3 (rev 02)
    00:1d.3 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #4 (rev 02)
    00:1d.7 USB Controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02)
    00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev c2)
    00:1f.0 ISA bridge: Intel Corporation 82801EB/ER (ICH5/ICH5R) LPC Interface Bridge (rev 02)
    00:1f.2 IDE interface: Intel Corporation 82801EB (ICH5) SATA Controller (rev 02)
    00:1f.3 SMBus: Intel Corporation 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02)
    00:1f.5 Multimedia audio controller: Intel Corporation 82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller (rev 02)
    01:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
    01:04.0 Memory controller [0503]: PCTel Inc HSP56 MicroModem (rev 04)
    root@prodcon:/home/prodcon#
    Here is the output of lshw for PCI

    Code:
         *-pci
              description: Host bridge
              product: 82845G/GL[Brookdale-G]/GE/PE DRAM Controller/Host-Hub Interface
              vendor: Intel Corporation
              physical id: 100
              bus info: pci@0000:00:00.0
              version: 03
              width: 32 bits
              clock: 33MHz
              configuration: driver=agpgart-intel
              resources: irq:0 memory:e0000000-e3ffffff(prefetchable)
            *-display
                 description: VGA compatible controller
                 product: 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device
                 vendor: Intel Corporation
                 physical id: 2
                 bus info: pci@0000:00:02.0
                 version: 03
                 width: 32 bits
                 clock: 33MHz
                 capabilities: pm vga_controller bus_master cap_list rom
                 configuration: driver=i915 latency=0
                 resources: irq:16 memory:d8000000-dfffffff(prefetchable) memory:40000000-4007ffff
            *-usb:0
                 description: USB Controller
                 product: 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #1
                 vendor: Intel Corporation
                 physical id: 1d
                 bus info: pci@0000:00:1d.0
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: uhci bus_master
                 configuration: driver=uhci_hcd latency=0
                 resources: irq:16 ioport:d900(size=32)
            *-usb:1
                 description: USB Controller
                 product: 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #2
                 vendor: Intel Corporation
                 physical id: 1d.1
                 bus info: pci@0000:00:1d.1
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: uhci bus_master
                 configuration: driver=uhci_hcd latency=0
                 resources: irq:19 ioport:e000(size=32)
            *-usb:2
                 description: USB Controller
                 product: 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #3
                 vendor: Intel Corporation
                 physical id: 1d.2
                 bus info: pci@0000:00:1d.2
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: uhci bus_master
                 configuration: driver=uhci_hcd latency=0
                 resources: irq:18 ioport:e200(size=32)
            *-usb:3
                 description: USB Controller
                 product: 82801EB/ER (ICH5/ICH5R) USB UHCI Controller #4
                 vendor: Intel Corporation
                 physical id: 1d.3
                 bus info: pci@0000:00:1d.3
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: uhci bus_master
                 configuration: driver=uhci_hcd latency=0
                 resources: irq:16 ioport:d800(size=32)
            *-usb:4
                 description: USB Controller
                 product: 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller
                 vendor: Intel Corporation
                 physical id: 1d.7
                 bus info: pci@0000:00:1d.7
                 version: 02
                 width: 32 bits
                 clock: 33MHz
                 capabilities: pm debug ehci bus_master cap_list
                 configuration: driver=ehci_hcd latency=0
                 resources: irq:23 memory:40080000-400803ff
            *-pci
                 description: PCI bridge
                 product: 82801 PCI Bridge
                 vendor: Intel Corporation
                 physical id: 1e
                 bus info: pci@0000:00:1e.0
                 version: c2
                 width: 32 bits
                 clock: 33MHz
                 capabilities: pci normal_decode bus_master
                 resources: ioport:c000(size=4096) memory:e4000000-e80fffff
               *-network
                    description: Ethernet interface
                    product: RTL-8139/8139C/8139C+
                    vendor: Realtek Semiconductor Co., Ltd.
                    physical id: 1
                    bus info: pci@0000:01:01.0
                    logical name: eth0
                    version: 10
                    serial: 00:e0:4c:14:e9:81
                    size: 100MB/s
                    capacity: 100MB/s
                    width: 32 bits
                    clock: 33MHz
                    capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
                    configuration: autonegotiation=on broadcast=yes driver=8139too driverversion=0.9.28 duplex=full ip=192.168.1.7 latency=32 link=yes maxlatency=64 mingnt=32 multicast=yes port=MII speed=100MB/s
                    resources: irq:17 ioport:c000(size=256) memory:e6001000-e60010ff
               *-memory UNCLAIMED
                    description: Memory controller
                    product: HSP56 MicroModem
                    vendor: PCTel Inc
                    physical id: 4
                    bus info: pci@0000:01:04.0
                    version: 04
                    width: 32 bits
                    clock: 33MHz (30.3ns)
                    capabilities: pm bus_master cap_list
                    configuration: latency=32 maxlatency=60 mingnt=1
                    resources: memory:e4000000-e4000fff ioport:c400(size=256)
    Last edited by matt_symes; March 27th, 2013 at 11:16 AM. Reason: Added code tags for readability

  2. #2
    Join Date
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    Distro
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    Re: pci 0000:00:02.0: BAR X: address space collision on of device

    Hi

    When you say you feel your system is slow, what metrics have you checked/performed to identify that the system is slower than it should be ?

    Have you checked CPU usage, memory and swap usage ? I/O usage ?

    Where do you feel the system is slow ?

    As for the PCI base address register collisions mentioned in dmesg, i would try to get more context.

    Please post the output of

    Code:
    grep -m 1 -C50 collision /var/log/dmesg
    Also, please use code tags when posting text from a terminal. It makes it much easier to read.

    EDIT:

    The specs of you PC would be useful as well.

    Kind regards
    Last edited by matt_symes; March 27th, 2013 at 01:03 PM.
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