Q. How do I find out what Linux kernel drivers and loaded by my Linux distribution? How do I list device drivers (modules) loaded in memory?
A. Under Linux use the file /proc/modules shows what kernel modules (drivers) are currently loaded.
lsmod command
You need to use lsmod command to show the status of modules in the Linux Kernel. Simply type the lsmod at a shell prompt:
$ lsmodOutput:
Module Size Used by binfmt_misc 12680 1 rfcomm 40856 0 l2cap 25856 5 rfcomm bluetooth 55908 4 rfcomm,l2cap ppdev 10116 0 acpi_cpufreq 10056 1 cpufreq_stats 7360 0 cpufreq_userspace 5408 0 cpufreq_conservative 8200 0 cpufreq_ondemand 9228 4 cpufreq_powersave 2688 0 freq_table 5792 3 acpi_cpufreq,cpufreq_stats,cpufreq_ondemand pcc_acpi 13184 0 dev_acpi 12292 0 tc1100_wmi 8068 0 sony_acpi 6284 0 dock 10268 0 sbs 15652 0 asus_acpi 17308 0 ac 6020 0 battery 10756 0 i2c_ec 6016 1 sbs video 16388 0 backlight 7040 1 asus_acpi container 5248 0 button 8720 0 nls_utf8 3072 1 ntfs 107764 1 eeprom 8336 0 i2c_i801 9356 0 sbp2 23812 0 lp 12452 0 fuse 46612 0 af_packet 23816 2 snd_hda_intel 21912 4 snd_hda_codec 205056 1 snd_hda_intel snd_pcm_oss 44544 0 snd_mixer_oss 17408 1 snd_pcm_oss snd_pcm 79876 4 snd_hda_intel,snd_hda_codec,snd_pcm_oss snd_seq_dummy 4740 0 snd_seq_oss 32896 0 tuner 61864 0 snd_seq_midi 9600 0 snd_rawmidi 25472 1 snd_seq_midi bttv 173684 0 video_buf 26116 1 bttv snd_seq_midi_event 8448 2 snd_seq_oss,snd_seq_midi ir_common 31236 1 bttv nvidia 6224240 24 compat_ioctl32 2304 1 bttv snd_seq 52592 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event i2c_algo_bit 8712 1 bttv btcx_risc 5896 1 bttv snd_timer 23684 3 snd_pcm,snd_seq snd_seq_device 9100 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq tveeprom 15888 1 bttv iTCO_wdt 11812 0 iTCO_vendor_support 4868 1 iTCO_wdt parport_pc 36388 1 agpgart 35400 1 nvidia tsdev 8768 0 parport 36936 3 ppdev,lp,parport_pc snd 54020 16 snd_hda_intel,snd_hda_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device soundcore 8672 1 snd i2c_core 22656 8 i2c_ec,eeprom,i2c_i801,tuner,bttv,nvidia,i2c_algo_bit,tveeprom rt61 245128 1 psmouse 38920 0 snd_page_alloc 10888 2 snd_hda_intel,snd_pcm videodev 28160 1 bttv v4l2_common 25216 3 tuner,bttv,videodev v4l1_compat 15236 1 videodev serio_raw 7940 0 shpchp 34324 0 pci_hotplug 32576 1 shpchp evdev 11008 3 pcspkr 4224 0 ipv6 268960 20 ext3 133128 1 jbd 59816 1 ext3 mbcache 9604 1 ext3 sg 36252 0 sr_mod 17060 0 sd_mod 23428 4 cdrom 37664 1 sr_mod generic 5124 0 [permanent] ata_generic 9092 0 ohci1394 36528 0 ieee1394 299448 2 sbp2,ohci1394 pata_marvell 7936 0 ata_piix 15492 3 libata 125720 3 ata_generic,pata_marvell,ata_piix scsi_mod 142348 5 sbp2,sg,sr_mod,sd_mod,libata e1000 126016 0 ehci_hcd 34188 0 uhci_hcd 25360 0 usbcore 134280 3 ehci_hcd,uhci_hcd thermal 14856 0 processor 31048 2 acpi_cpufreq,thermal fan 5636 0 fbcon 42656 0 tileblit 3584 1 fbcon font 9216 1 fbcon bitblit 6912 1 fbcon softcursor 3200 1 bitblit vesafb 9220 0 capability 5896 0 commoncap 8192 1 capability
For more information click below link
http://www.cyberciti.biz/faq/linux-show-the-status-of-modules-driver/
