我在华硕 TP500LA 笔记本电脑上安装了 Ubuntu Server 16.04.2 LTS。我已将其连接到 Wi-Fi，并安装了联发科 MT7630Ewifi 卡。它运行良好大约一天，然后就变得无响应。
kern.log充满了同样的错误：
May 8 00:26:47 Claire kernel: [88167.420227] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
May 8 00:26:47 Claire kernel: [88167.456229] ieee80211 phy0: rt2x00queue_write_tx_frame: Error - Dropping frame due to full tx queue 0
May 8 00:26:48 Claire kernel: [88168.640196] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
这个错误每隔几秒就会重复一次，直到我重新启动它。它变得如此超负荷，以至于显示器也开始充斥着错误。然后我就进不去了ssh，我只能手动重新启动。
我搜索了互联网，发现有人遇到了同样的问题，但似乎所有的线索都被切断了，或者解决方案对我来说技术含量太高了，创建自定义驱动程序并做一些我不知道如何做的事情，没有任何解释。
$ cat /proc/version
Linux version 4.4.0-77-generic (buildd@lgw01-59) (gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.4) ) #98-Ubuntu SMP Wed Apr 26 08:34:02 UTC 2017
$ lspci -nnk | grep -iA2 net
02:00.1 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 12)
Subsystem: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:0123]
Kernel driver in use: r8169
Kernel modules: r8169
03:00.0 Network controller [0280]: MEDIATEK Corp. MT7630e 802.11bgn Wireless Network Adapter [14c3:7630]
Subsystem: Foxconn International, Inc. MT7630e 802.11bgn Wireless Network Adapter [105b:e074]
Kernel driver in use: mt7630e
Kernel modules: wl, mt7630e
$ iwconfig #asterisks for privacy
lo no wireless extensions.
wlp3s0f0 IEEE 802.11bgn ESSID:"BTHub*-****"
Mode:Managed Frequency:2.437 GHz Access Point: **:**:**:**:**
Bit Rate=72.2 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=70/70 Signal level=56 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:4 Invalid misc:5 Missed beacon:0
enp2s0f1 no wireless extensions.
$ iw reg get
country GB: DFS-ETSI
(2402 - 2482 @ 40), (N/A, 20), (N/A)
(5170 - 5250 @ 80), (N/A, 20), (N/A)
(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS
(5490 - 5710 @ 160), (N/A, 27), (0 ms), DFS
(57000 - 66000 @ 2160), (N/A, 40), (N/A)
kern.log导致错误的原因如下：
May 8 00:12:17 Claire kernel: [87297.685504] ===>rt2800_sta_remove:MT7630
May 8 00:12:17 Claire kernel: [87297.685515] BtAFHCtl: COEX AFH Start Ch = 0, AFH End Ch = 0, Channel = 6, CentralChannel = 6
May 8 00:12:17 Claire kernel: [87297.685517] SendAndesAFH: -->
May 8 00:12:17 Claire kernel: [87297.685519] SendAndesAFH: LinkStatus = 2, BW = 1, Channel = 6, BssHashID = 1, PktLength = 20
May 8 00:12:17 Claire kernel: [87297.685522] AsicSendCmdToAndes not need Rsp!!!
May 8 00:12:17 Claire kernel: [87297.685525] PCIKickOutCmd (TxCpuIdx = 16)
May 8 00:12:17 Claire kernel: [87297.685527] SendAndesAFH: <--
May 8 00:12:17 Claire kernel: [87297.685553] ==>INT_SOURCE_CSR_7630_HCCA_DMA_DONE
May 8 00:12:17 Claire kernel: [87297.690495] ===>rt2800_sta_remove:MT7630 0x80100 = 0x0
May 8 00:12:17 Claire kernel: [87297.690497] ===>rt2800_sta_remove:MT7630 0x80100 = 0x0
May 8 00:12:17 Claire kernel: [87297.716114] cfg80211: World regulatory domain updated:
May 8 00:12:17 Claire kernel: [87297.716118] cfg80211: DFS Master region: unset
May 8 00:12:17 Claire kernel: [87297.716119] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
May 8 00:12:17 Claire kernel: [87297.716122] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
May 8 00:12:17 Claire kernel: [87297.716124] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
May 8 00:12:17 Claire kernel: [87297.716125] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
May 8 00:12:17 Claire kernel: [87297.716127] cfg80211: (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
May 8 00:12:17 Claire kernel: [87297.716129] cfg80211: (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
May 8 00:12:17 Claire kernel: [87297.716131] cfg80211: (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
May 8 00:12:17 Claire kernel: [87297.716133] cfg80211: (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
May 8 00:12:17 Claire kernel: [87297.716134] cfg80211: (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
May 8 00:12:18 Claire kernel: [87298.849852] wlp3s0f0: authenticate with 00:a4:23:1d:e4:a8
May 8 00:12:18 Claire kernel: [87298.865471] wlp3s0f0: send auth to 00:a4:23:1d:e4:a8 (try 1/3)
May 8 00:12:18 Claire kernel: [87298.867317] wlp3s0f0: authenticated
May 8 00:12:18 Claire kernel: [87298.869452] wlp3s0f0: associate with 00:a4:23:1d:e4:a8 (try 1/3)
May 8 00:12:18 Claire kernel: [87298.879184] wlp3s0f0: RX AssocResp from 00:a4:23:1d:e4:a8 (capab=0x431 status=0 aid=1)
May 8 00:12:18 Claire kernel: [87298.879196] ===>rt2800_sta_add:MT7630
May 8 00:12:18 Claire kernel: [87298.879215] ===>rt2800_sta_add:MT7630 wcid=33
May 8 00:12:18 Claire kernel: [87298.879216] Connect to AP MAC: 00:a4:23:1d:e4:a8 WCID=33
May 8 00:12:18 Claire kernel: [87298.879222] BtAFHCtl: COEX AFH Start Ch = 11, AFH End Ch = 59, Channel = 6, CentralChannel = 6
May 8 00:12:18 Claire kernel: [87298.879224] SendAndesAFH: -->
May 8 00:12:18 Claire kernel: [87298.879225] SendAndesAFH: LinkStatus = 1, BW = 1, Channel = 6, BssHashID = 1, PktLength = 20
May 8 00:12:18 Claire kernel: [87298.879227] AsicSendCmdToAndes not need Rsp!!!
May 8 00:12:18 Claire kernel: [87298.879230] PCIKickOutCmd (TxCpuIdx = 17)
May 8 00:12:18 Claire kernel: [87298.879232] SendAndesAFH: <--
May 8 00:12:18 Claire kernel: [87298.879233] SendAndesWLANStatus: -->
May 8 00:12:18 Claire kernel: [87298.879235] SendAndesWLANStatus: CoexOperation = 4, WlanStatus = 15, PrivilegeTime = 0, BssHashID = 1, PktLength = 16
May 8 00:12:18 Claire kernel: [87298.879238] ==>INT_SOURCE_CSR_7630_HCCA_DMA_DONE
May 8 00:12:18 Claire kernel: [87298.879248] AsicSendCmdToAndes not need Rsp!!!
May 8 00:12:18 Claire kernel: [87298.879249] PCIKickOutCmd (TxCpuIdx = 18)
May 8 00:12:18 Claire kernel: [87298.879256] ==>INT_SOURCE_CSR_7630_HCCA_DMA_DONE
May 8 00:12:18 Claire kernel: [87298.884714] BtAFHCtl: COEX AFH Start Ch = 11, AFH End Ch = 59, Channel = 6, CentralChannel = 6
May 8 00:12:18 Claire kernel: [87298.884716] SendAndesAFH: -->
May 8 00:12:18 Claire kernel: [87298.884717] SendAndesAFH: LinkStatus = 1, BW = 1, Channel = 6, BssHashID = 1, PktLength = 20
May 8 00:12:18 Claire kernel: [87298.884718] AsicSendCmdToAndes not need Rsp!!!
May 8 00:12:18 Claire kernel: [87298.884720] PCIKickOutCmd (TxCpuIdx = 19)
May 8 00:12:18 Claire kernel: [87298.884721] SendAndesAFH: <--
May 8 00:12:18 Claire kernel: [87298.879233] SendAndesWLANStatus: -->
May 8 00:12:18 Claire kernel: [87298.879235] SendAndesWLANStatus: CoexOperation =
4, WlanStatus = 15, PrivilegeTime = 0, BssHashID = 1, PktLength = 16
May 8 00:12:18 Claire kernel: [87298.879238] ==>INT_SOURCE_CSR_7630_HCCA_DMA_DONE
May 8 00:12:18 Claire kernel: [87298.879248] AsicSendCmdToAndes not need Rsp!!!
May 8 00:12:18 Claire kernel: [87298.879249] PCIKickOutCmd (TxCpuIdx = 18)
May 8 00:12:18 Claire kernel: [87298.879256] ==>INT_SOURCE_CSR_7630_HCCA_DMA_DONE
May 8 00:12:18 Claire kernel: [87298.884714] BtAFHCtl: COEX AFH Start Ch = 11, AF
H End Ch = 59, Channel = 6, CentralChannel = 6
May 8 00:12:18 Claire kernel: [87298.884716] SendAndesAFH: -->
May 8 00:12:18 Claire kernel: [87298.884717] SendAndesAFH: LinkStatus = 1, BW = 1
, Channel = 6, BssHashID = 1, PktLength = 20
May 8 00:12:18 Claire kernel: [87298.884718] AsicSendCmdToAndes not need Rsp!!!
May 8 00:12:18 Claire kernel: [87298.884720] PCIKickOutCmd (TxCpuIdx = 19)
May 8 00:12:18 Claire kernel: [87298.884721] SendAndesAFH: <--
May 8 00:12:18 Claire kernel: [87298.884728] ==>INT_SOURCE_CSR_7630_HCCA_DMA_DONE
May 8 00:12:18 Claire kernel: [87298.889737] wlp3s0f0: associated
May 8 00:12:18 Claire kernel: [87298.892244] cfg80211: Regulatory domain changed
to country: GB
May 8 00:12:18 Claire kernel: [87298.892247] cfg80211: DFS Master region: ETSI
May 8 00:12:18 Claire kernel: [87298.892249] cfg80211: (start_freq - end_freq @
bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
May 8 00:12:18 Claire kernel: [87298.892252] cfg80211: (2402000 KHz - 2482000 K
Hz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
May 8 00:12:18 Claire kernel: [87298.892254] cfg80211: (5170000 KHz - 5250000 K
Hz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
May 8 00:12:18 Claire kernel: [87298.892256] cfg80211: (5250000 KHz - 5330000 K
Hz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
May 8 00:12:18 Claire kernel: [87298.892258] cfg80211: (5490000 KHz - 5710000 K
Hz @ 160000 KHz), (N/A, 2700 mBm), (0 s)
May 8 00:12:18 Claire kernel: [87298.892259] cfg80211: (57000000 KHz - 66000000
KHz @ 2160000 KHz), (N/A, 4000 mBm), (N/A)
May 8 00:12:57 Claire kernel: [87338.156181] ===>rt2800_sta_remove:MT7630
May 8 00:12:57 Claire kernel: [87338.156190] BtAFHCtl: COEX AFH Start Ch = 0, AFH End Ch = 0, Channel = 6, CentralChannel = 6
May 8 00:12:57 Claire kernel: [87338.156193] SendAndesAFH: -->
May 8 00:12:57 Claire kernel: [87338.156196] SendAndesAFH: LinkStatus = 2, BW = 1, Channel = 6, BssHashID = 1, PktLength = 20
May 8 00:12:57 Claire kernel: [87338.156199] AsicSendCmdToAndes not need Rsp!!!
May 8 00:12:57 Claire kernel: [87338.156204] PCIKickOutCmd (TxCpuIdx = 20)
May 8 00:12:57 Claire kernel: [87338.156206] SendAndesAFH: <--
May 8 00:12:57 Claire kernel: [87338.161176] ===>rt2800_sta_remove:MT7630 0x80100 = 0x0
May 8 00:12:57 Claire kernel: [87338.161178] ===>rt2800_sta_remove:MT7630 0x80100 = 0x0
May 8 00:12:57 Claire kernel: [87338.328083] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
May 8 00:12:57 Claire kernel: [87338.342618] cfg80211: World regulatory domain updated:
May 8 00:12:57 Claire kernel: [87338.342622] cfg80211: DFS Master region: unset
May 8 00:12:57 Claire kernel: [87338.342624] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
May 8 00:12:57 Claire kernel: [87338.342626] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
May 8 00:12:57 Claire kernel: [87338.342628] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
May 8 00:12:57 Claire kernel: [87338.342630] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
May 8 00:12:57 Claire kernel: [87338.342632] cfg80211: (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
May 8 00:12:57 Claire kernel: [87338.342634] cfg80211: (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
May 8 00:12:57 Claire kernel: [87338.342635] cfg80211: (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
May 8 00:12:57 Claire kernel: [87338.342637] cfg80211: (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
May 8 00:12:57 Claire kernel: [87338.342639] cfg80211: (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
May 8 00:12:58 Claire kernel: [87338.588073] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
May 8 00:12:58 Claire kernel: [87338.748069] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
May 8 00:12:59 Claire kernel: [87339.968027] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
May 8 00:13:04 Claire kernel: [87344.959890] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
May 8 00:13:04 Claire kernel: [87345.119856] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
May 8 00:13:05 Claire kernel: [87346.339824] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush
May 8 00:13:10 Claire kernel: [87351.335676] ieee80211 phy0: rt2x00queue_flush_queue: Warning - Queue 0 failed to flush