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 caveats).

   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 files.

   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>


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

   -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 useful.

   -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

   -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

   Options for selection of devices
   -s [[[[<domain>]:]<bus>]:][<slot>][.[<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), slot
          (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

   -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

   -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-

   -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-sensitive.

   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

   Rev    Revision number (optional).

   ProgIf Programming interface (optional).

   Driver Kernel driver currently handling  the  device  (optional,  Linux

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

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

   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


          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 pci.ids.

          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 back-end.


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


   The PCI Utilities are maintained by Martin Mares <>.


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