Installing driver for WiFi adapter

[Sam Varshavchik]

Paul Smith writes:

> On Tue, Aug 23, 2011 at 8:34 PM, Terry Polzin <foxec208 at wowway.com> wrote:
> >> TP-LINK TL-WN821N
> >
> >
> > Can you post output of lsmod and lsusb. Have you installed the firmware
> > for the device into /lib/firmware?  If the device is supported by the
> > kernel you won't be able to load the module without the firmware
> > installed.
> >
> > Google is your friend.
>
> Thanks, Terry.

Why do you believe you need to install some kind of a driver? From the  
below, it looks like your card is an atheros chip-based one, and you have a  
bunch of ath9 modules loaded.

What exactly is or is not working for you.

>
> $ lsmod
> Module                  Size  Used by
> fuse                   62381  3
> vboxnetadp              5674  0
> vboxnetflt             17790  0
> vboxdrv              1789793  2 vboxnetadp,vboxnetflt
> sunrpc                200079  1
> cpufreq_ondemand        5934  2
> acpi_cpufreq            9536  0
> freq_table              5038  2 cpufreq_ondemand,acpi_cpufreq
> mperf                   1449  1 acpi_cpufreq
> bnep                   14635  2
> bluetooth             191587  7 bnep
> ip6t_REJECT             3992  2
> nf_conntrack_ipv6       7730  2
> nf_defrag_ipv6          9083  1 nf_conntrack_ipv6
> nf_conntrack_ipv4       8358  2
> nf_defrag_ipv4          1513  1 nf_conntrack_ipv4
> xt_state                1306  4
> nf_conntrack           67613  3 nf_conntrack_ipv6,nf_conntrack_ipv4,xt_state
> ip6table_filter         1655  1
> ip6_tables             16908  1 ip6table_filter
> snd_hda_codec_hdmi     22499  1
> snd_hda_codec_conexant    54661  1
> snd_hda_intel          23896  2
> snd_hda_codec          82508  3
> snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_intel
> uvcvideo               57089  0
> videodev               72104  1 uvcvideo
> media                  11611  2 uvcvideo,videodev
> ath9k_htc              50165  0
> ath9k_common            2496  1 ath9k_htc
> ath9k_hw              271229  2 ath9k_htc,ath9k_common
> snd_hwdep               6328  1 snd_hda_codec
> v4l2_compat_ioctl32     7377  1 videodev
> arc4                    1417  2
> snd_seq                52322  0
> snd_seq_device          5941  1 snd_seq
> ath5k                 162786  0
> snd_pcm                78424  3  
> snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
> ath                    15098  3 ath9k_htc,ath9k_hw,ath5k
> snd_timer              19372  2 snd_seq,snd_pcm
> mac80211              247332  2 ath9k_htc,ath5k
> snd                    63380  13
> snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_seq,snd_seq_device,ssd_pcm,snd_timer
> soundcore               6267  1 snd
> snd_page_alloc          7343  2 snd_hda_intel,snd_pcm
> cfg80211              148129  4 ath9k_htc,ath5k,ath,mac80211
> r8169                  38146  0
> hp_wmi                  8103  0
> sparse_keymap           3358  1 hp_wmi
> rfkill                 16436  5 bluetooth,cfg80211,hp_wmi
> i2c_i801                9237  0
> serio_raw               4414  0
> mii                     4335  1 r8169
> iTCO_wdt               13000  0
> iTCO_vendor_support     2578  1 iTCO_wdt
> joydev                  9615  0
> microcode              18587  0
> ipv6                  284570  43 ip6t_REJECT,nf_conntrack_ipv6,nf_defrag_ipv6
> uas                     7775  0
> ums_realtek             4859  0
> usb_storage            46091  1 ums_realtek
> wmi                     9033  1 hp_wmi
> i915                  378728  2
> drm_kms_helper         26474  1 i915
> drm                   193923  3 i915,drm_kms_helper
> i2c_algo_bit            4974  1 i915
> i2c_core               25712  6
> videodev,i2c_i801,i915,drm_kms_helper,drm,i2c_algo_bit
> video                  12340  1 i915
> $
>
> $ lsusb
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 001 Device 002: ID 0bda:0158 Realtek Semiconductor Corp. USB 2.0
> multicard reader
> Bus 001 Device 003: ID 04f2:b091 Chicony Electronics Co., Ltd Webcam
> Bus 002 Device 005: ID 0cf3:7015 Atheros Communications, Inc.
> Bus 007 Device 002: ID 04fc:0003 Sunplus Technology Co., Ltd CM1092
> Optical Scroller Mouse
> $
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