Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

How can I find which module is in use in CentOS 5.4 or 4.8?

For instance, in Fedora 12:

lspci -k

06:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02)
 Subsystem: Intel Corporation PRO/Wireless 3945ABG Network Connection
 Kernel driver in use: iwl3945
 Kernel modules: iwl3945

In CentOS:

lspci -k

lspci: invalid option -- k

With lsmod:

lsmod| grep (module)

I think i s not an option because I can't know which device is using the module.

share|improve this question

please update your pciutils package.

#yum install pciutils

and issue lspci -k it should work .

share|improve this answer


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

lspci -v as stated on your title should work aswell but it would list everything.


Be verbose and display detailed information about all devices.


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


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).

share|improve this answer

you could also use lsmod

# lsmod

Module                  Size  Used by
nfs                   231597  2
nfsd                  205489  17
exportfs                9665  1 nfsd
nfs_acl                 7617  2 nfs,nfsd
auth_rpcgss            43105  1 nfsd
autofs4                29253  3
coretemp               12609  0
w83627ehf              23241  0
hwmon_vid               6849  1 w83627ehf
hidp                   22977  2
l2cap                  29761  5 hidp
bluetooth              53797  2 hidp,l2cap
lockd                  63209  3 nfs,nfsd
sunrpc                149373  21 nfs,nfsd,nfs_acl,auth_rpcgss,lockd
cpufreq_ondemand       12493  1
acpi_cpufreq           13641  3
mperf                   6337  1 acpi_cpufreq
via_rhine              27597  0
be2iscsi               59221  0
ib_iser                35609  0
rdma_cm                35705  1 ib_iser
ib_cm                  39213  1 rdma_cm
iw_cm                  13125  1 rdma_cm
ib_sa                  39093  2 rdma_cm,ib_cm
ib_mad                 37717  2 ib_cm,ib_sa
ib_core                63557  6 ib_iser,rdma_cm,ib_cm,iw_cm,ib_sa,ib_mad
ib_addr                11717  1 rdma_cm
iscsi_tcp              20041  0
xfrm_nalgo             13381  0
crypto_api             12609  1 xfrm_nalgo
share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.