Provided by: pciutils_3.5.2-1ubuntu1.1_amd64 bug


       lspci - list all PCI devices


       lspci [options]


       lspci  is  a  utility for displaying information about PCI buses in the system and devices
       connected to them.

       By default, it shows a brief list of devices. Use the options described below  to  request
       either a more verbose output or output intended for parsing by other programs.

       If  you  are going to report bugs in PCI device drivers or in lspci itself, please include
       output of "lspci -vvx" or even better "lspci -vvxxx"  (however,  see  below  for  possible

       Some  parts  of  the  output,  especially  in  the  highly  verbose  modes,  are  probably
       intelligible only to experienced PCI hackers. For exact definitions of the fields,  please
       consult either the PCI specifications or the header.h and /usr/include/linux/pci.h include

       Access to some parts of the  PCI  configuration  space  is  restricted  to  root  on  many
       operating  systems,  so  the  features  of  lspci  available  to normal users are limited.
       However, lspci tries its best  to  display  as  much  as  available  and  mark  all  other
       information with <access denied> text.


   Basic display modes
       -m     Dump PCI device data in a backward-compatible machine readable form.  See below for

       -mm    Dump PCI device data in a machine readable form for easy parsing by  scripts.   See
              below for details.

       -t     Show  a  tree-like  diagram  containing all buses, bridges, devices and connections
              between them.

   Display options
       -v     Be verbose and display detailed information about all devices.

       -vv    Be very verbose and display more details. This  level  includes  everything  deemed

       -vvv   Be  even  more  verbose  and  display  everything  we are able to parse, even if it
              doesn't look interesting at all (e.g., undefined memory regions).

       -k     Show kernel drivers handling  each  device  and  also  kernel  modules  capable  of
              handling  it.   Turned on by default when -v is given in the normal mode of output.
              (Currently works only on Linux with kernel 2.6 or newer.)

       -x     Show hexadecimal dump of the standard part of the configuration space (the first 64
              bytes or 128 bytes for CardBus bridges).

       -xxx   Show hexadecimal dump of the whole PCI configuration space. It is available only to
              root as several PCI devices crash when you try to read some  parts  of  the  config
              space  (this  behavior probably doesn't violate the PCI standard, but it's at least
              very stupid). However, such devices are rare, so you needn't worry much.

       -xxxx  Show hexadecimal dump of the extended (4096-byte) PCI configuration space available
              on PCI-X 2.0 and PCI Express buses.

       -b     Bus-centric  view.  Show  all IRQ numbers and addresses as seen by the cards on the
              PCI bus instead of as seen by the kernel.

       -D     Always show PCI domain numbers. By default, lspci suppresses them on machines which
              have only domain 0.

   Options to control resolving ID's to names
       -n     Show  PCI  vendor and device codes as numbers instead of looking them up in the PCI
              ID list.

       -nn    Show PCI vendor and device codes as both numbers and names.

       -q     Use DNS to query the central PCI ID database if a device is not found in the  local
              pci.ids  file.  If  the DNS query succeeds, the result is cached in ~/.pciids-cache
              and it is recognized in subsequent runs even if -q is not given  any  more.  Please
              use this switch inside automated scripts only with caution to avoid overloading the
              database servers.

       -qq    Same as -q, but the local cache is reset.

       -Q     Query the central database even for entries which are recognized locally.  Use this
              if you suspect that the displayed entry is wrong.

   Options for selection of devices
       -s [[[[<domain>]:]<bus>]:][<device>][.[<func>]]
              Show  only  devices  in the specified domain (in case your machine has several host
              bridges, they can either share a common bus  number  space  or  each  of  them  can
              address  a  PCI  domain of its own; domains are numbered from 0 to ffff), bus (0 to
              ff), device (0 to 1f) and function (0 to 7).  Each component of the device  address
              can  be  omitted  or  set  to  "*",  both  meaning  "any  value".  All  numbers are
              hexadecimal.  E.g., "0:" means all devices on bus 0, "0"  means  all  functions  of
              device 0 on any bus, "0.3" selects third function of device 0 on all buses and ".4"
              shows only the fourth function of each device.

       -d [<vendor>]:[<device>][:<class>]
              Show only devices with specified vendor, device and class ID. The ID's are given in
              hexadecimal and may be omitted or given as "*", both meaning "any value".

   Other options
       -i <file>
              Use <file> as the PCI ID list instead of /usr/share/misc/pci.ids.

       -p <file>
              Use <file> as the map of PCI ID's handled by kernel modules. By default, lspci uses
              /lib/modules/kernel_version/modules.pcimap.  Applies only  to  Linux  systems  with
              recent enough module tools.

       -M     Invoke  bus  mapping  mode  which  performs  a  thorough  scan  of all PCI devices,
              including those behind misconfigured bridges, etc.  This  option  gives  meaningful
              results  only  with  a  direct  hardware  access  mode, which usually requires root
              privileges.  Please note that the bus mapper only scans PCI domain 0.

              Shows lspci version. This option should be used stand-alone.

   PCI access options
       The PCI utilities use the PCI library to talk to PCI devices (see pcilib(7) for  details).
       You can use the following options to influence its behavior:

       -A <method>
              The  library supports a variety of methods to access the PCI hardware.  By default,
              it uses the first access method available, but you can use this option to  override
              this decision. See -A help for a list of available methods and their descriptions.

       -O <param>=<value>
              The behavior of the library is controlled by several named parameters.  This option
              allows to set the value of any of the parameters. Use -O help for a list  of  known
              parameters and their default values.

       -H1    Use  direct  hardware  access  via  Intel  configuration  mechanism  1.  (This is a
              shorthand for -A intel-conf1.)

       -H2    Use direct hardware access  via  Intel  configuration  mechanism  2.   (This  is  a
              shorthand for -A intel-conf2.)

       -F <file>
              Instead  of  accessing  real hardware, read the list of devices and values of their
              configuration registers from the given file produced by an earlier run of lspci -x.
              This  is  very  useful  for  analysis of user-supplied bug reports, because you can
              display the hardware configuration in any way you want without disturbing the  user
              with requests for more dumps.

       -G     Increase debug level of the library.


       If you intend to process the output of lspci automatically, please use one of the machine-
       readable output formats (-m, -vm, -vmm) described in this section. All other  formats  are
       likely to change between versions of lspci.

       All numbers are always printed in hexadecimal. If you want to process numeric ID's instead
       of names, please add the -n switch.

   Simple format (-m)
       In the simple format, each device is described on a single line,  which  is  formatted  as
       parameters  suitable for passing to a shell script, i.e., values separated by whitespaces,
       quoted and escaped if necessary.  Some of  the  arguments  are  positional:  slot,  class,
       vendor name, device name, subsystem vendor name and subsystem name (the last two are empty
       if the device has no subsystem); the remaining arguments are option-like:

       -rrev  Revision number.

              Programming interface.

       The relative order of positional arguments and options is undefined.  New options  can  be
       added  in  future versions, but they will always have a single argument not separated from
       the option by any spaces, so they can be easily ignored if not recognized.

   Verbose format (-vmm)
       The verbose output is a sequence  of  records  separated  by  blank  lines.   Each  record
       describes  a  single  device  by  a sequence of lines, each line containing a single `tag:
       value' pair. The tag and the value are separated by a single tab character.   Neither  the
       records  nor  the  lines  within  a  record  are  in any particular order.  Tags are case-

       The following tags are defined:

       Slot   The name of the slot where the device resides ([domain:]bus:device.function).  This
              tag is always the first in a record.

       Class  Name of the class.

       Vendor Name of the vendor.

       Device Name of the device.

              Name of the subsystem vendor (optional).

              Name of the subsystem (optional).

              The physical slot where the device resides (optional, Linux only).

       Rev    Revision number (optional).

       ProgIf Programming interface (optional).

       Driver Kernel driver currently handling the device (optional, Linux only).

       Module Kernel  module reporting that it is capable of handling the device (optional, Linux

              NUMA node this device is connected to (optional, Linux only).

       New tags can be added in future versions, so you should silently ignore any tags you don't

   Backward-compatible verbose format (-vm)
       In  this  mode, lspci tries to be perfectly compatible with its old versions.  It's almost
       the same as the regular verbose format, but the Device tag is used for both the  slot  and
       the  device name, so it occurs twice in a single record. Please avoid using this format in
       any new code.


              A list of all known PCI ID's (vendors, devices, classes and subclasses). Maintained
              at,  use  the update-pciids utility to download the
              most recent version.

              If lspci is compiled with support  for  compression,  this  file  is  tried  before

              All ID's found in the DNS query mode are cached in this file.


       Sometimes,  lspci  is  not  able  to  decode the configuration registers completely.  This
       usually happens when not enough documentation was  available  to  the  authors.   In  such
       cases,  it at least prints the <?> mark to signal that there is potentially something more
       to say. If you know the details, patches will be of course welcome.

       Access to the extended configuration space is currently supported only by the  linux_sysfs


       setpci(8), update-pciids(8), pcilib(7)


       The PCI Utilities are maintained by Martin Mares <>.