2.4GHz working, but 5GHz not working -- strange dmesg error

Fri Dec 13 16:35:33 UTC 2013

On Thu, Dec 12, 2013 at 04:10:00PM -0500, William Park wrote:
> Hi,
> 
> I want to ask TLUG before asking kernel list.  I have Linksys WMP600N
> dual-band PCI adapter (rt2800pci) which used to work, but now 5GHz is
> not working.  Router is ok, since my laptop can connect 5GHz.
> 
> I tried 3.10 and 3.12 kernels (that I compiled myself) and other
> distros, and they are all having the same problem.  When attempt is made
> to connect 5GHz, I get:
> 
> 	------------[ cut here ]------------
> 	WARNING: CPU: 0 PID: 2126 at /home/kernel/linux-3.12/drivers/net/wireless/rt2x00/rt2x00config.c:201 rt2x00lib_config+0x293/0x2e0 [rt2x00lib]()
> 	Modules linked in: nls_iso8859_1 nls_cp437 vfat fat btrfs libcrc32c fuse vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack iptable_filter ip_tables x_tables dm_mod nvidia(PO) snd_hda_codec_hdmi acpi_cpufreq processor edac_core sp5100_tco arc4 rt2800pci rt2800lib rt2x00pci rt2x00mmio rt2x00lib mac80211 cfg80211 eeprom_93cx6 drm agpgart r8169 psmouse evdev mii thermal_sys mac_hid k10temp i2c_piix4 crc_ccitt i2c_core edac_mce_amd button hwmon rtc_cmos rfkill wmi serio_raw ohci_pci ohci_hcd kvm_amd kvm snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_page_alloc snd_timer snd soundcore microcode loop
> 	CPU: 0 PID: 2126 Comm: wpa_supplicant Tainted: P           O 3.12.3 #1
> 	Hardware name: To be filled by O.E.M. To be filled by O.E.M./M5A97, BIOS 1605 10/25/2012
> 	 0000000000000009 ffff88007ff135d8 ffffffff814e59c1 0000000000000007
> 	 0000000000000000 ffff88007ff13618 ffffffff8103fff2 0000000000000038
> 	 ffff880416d05720 ffff880416d045c0 0000000000000042 0000000000000040
> 	Call Trace:
> 	 [<ffffffff814e59c1>] dump_stack+0x46/0x58
> 	 [<ffffffff8103fff2>] warn_slowpath_common+0x82/0xb0
> 	 [<ffffffff81040035>] warn_slowpath_null+0x15/0x20
> 	 [<ffffffffa0464f73>] rt2x00lib_config+0x293/0x2e0 [rt2x00lib]
> 	 [<ffffffffa0464463>] rt2x00mac_config+0x43/0x80 [rt2x00lib]
> 	 [<ffffffffa040543d>] ieee80211_hw_config+0x5d/0x2c0 [mac80211]
> 	 [<ffffffffa042e033>] ieee80211_vif_use_channel+0x3a3/0x440 [mac80211]
> 	 [<ffffffffa042f898>] ieee80211_prep_connection+0x138/0x820 [mac80211]
> 	 [<ffffffff811a27f0>] ? ext4_ext_find_extent+0x220/0x2a0
> 	 [<ffffffff814e1fd6>] ? printk+0x48/0x4a
> 	 [<ffffffffa0434811>] ieee80211_mgd_auth+0x2a1/0x310 [mac80211]
> 	 [<ffffffffa04191e3>] ieee80211_auth+0x13/0x20 [mac80211]
> 	 [<ffffffffa03e4b03>] cfg80211_mlme_auth+0x173/0x1a0 [cfg80211]
> 	 [<ffffffffa03d6afc>] nl80211_authenticate+0x2cc/0x330 [cfg80211]
> 	 [<ffffffff81461edc>] genl_family_rcv_msg+0x17c/0x380
> 	 [<ffffffff814620e0>] ? genl_family_rcv_msg+0x380/0x380
> 	 [<ffffffff81462159>] genl_rcv_msg+0x79/0xb0
> 	 [<ffffffff81461959>] netlink_rcv_skb+0xa9/0xc0
> 	 [<ffffffff81461bb7>] genl_rcv+0x27/0x40
> 	 [<ffffffff81460eed>] netlink_unicast+0x10d/0x190
> 	 [<ffffffff81461289>] netlink_sendmsg+0x319/0x760
> 	 [<ffffffff81422594>] sock_sendmsg+0x64/0x80
> 	 [<ffffffff8142e799>] ? verify_iovec+0x49/0xd0
> 	 [<ffffffff814228a4>] ___sys_sendmsg.part.30+0x2a4/0x2c0
> 	 [<ffffffff81035fec>] ? __do_page_fault+0x1ec/0x4f0
> 	 [<ffffffff811319af>] ? mntput+0x1f/0x30
> 	 [<ffffffff81115bba>] ? __fput+0x16a/0x230
> 	 [<ffffffff814232c0>] __sys_sendmsg+0x50/0x90
> 	 [<ffffffff81423309>] SyS_sendmsg+0x9/0x10
> 	 [<ffffffff814ec222>] system_call_fastpath+0x16/0x1b
> 	---[ end trace 9b341a9f9ef3f57c ]---
> 
> Is this a sign that the card dying?

Not necesarily.

Is it the same card as this:

07:01.0 Network controller: Ralink corp. RT2800 802.11n PCI
        Subsystem: Linksys Device 0067
        Flags: bus master, slow devsel, latency 64, IRQ 17
        Memory at fbef0000 (32-bit, non-prefetchable) [size=64K]
        Capabilities: [40] Power Management version 3
        Kernel driver in use: rt2800pci

# nm-tool 

NetworkManager Tool

State: connected (global)

- Device: wlan1  [auto wifi5] --------------------------------------------------
  Type:              802.11 WiFi
  Driver:            rt2800pci
  State:             connected
  Default:           yes
  HW Address:        00:25:9C:B9:0C:18

  Capabilities:
    Speed:           120 Mb/s

  Wireless Properties
    WEP Encryption:  yes
    WPA Encryption:  yes
    WPA2 Encryption: yes

  Wireless Access Points (* = current AP)
    *wifi5:          Infra, 00:24:01:E7:EA:E7, Freq 5240 MHz, Rate 54 Mb/s, Strength 54 WPA2
    MY NETWORK:      Infra, 00:13:46:D7:17:C6, Freq 2437 MHz, Rate 54 Mb/s, Strength 40 WEP
    BRIVICON INC:    Infra, 00:17:9A:29:80:38, Freq 2437 MHz, Rate 54 Mb/s, Strength 47 WEP
    landingGuest:    Infra, 2A:CF:DA:B8:C6:D1, Freq 5765 MHz, Rate 54 Mb/s, Strength 27 WPA WPA2
    landingStrip:    Infra, 28:CF:DA:B8:C6:CF, Freq 2442 MHz, Rate 54 Mb/s, Strength 54 WPA2
    Donaghy:         Infra, BC:14:01:2A:CA:58, Freq 2412 MHz, Rate 54 Mb/s, Strength 47 WPA2
    wifi24:          Infra, 00:24:01:E7:EA:E5, Freq 2417 MHz, Rate 54 Mb/s, Strength 70 WPA2
    HP-Print-67-LaserJet 1102: Infra, C0:18:85:8D:50:67, Freq 2437 MHz, Rate 54 Mb/s, Strength 27
    linksys:         Infra, 00:0F:66:8A:BE:6B, Freq 2437 MHz, Rate 54 Mb/s, Strength 44 WPA

  IPv4 Settings:
    Address:         192.168.1.101
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.1.1

    DNS:             192.168.1.1

I remember it took a long time to clue in to needing the package
'wireless-regdb' to configure it to know which country I was in and
hence which frequencies were allowed to be tried.  Once I did install
that and tell it I was in Canada, then 5GHz just worked.

-- 
Len Sorensen
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