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  1. $ sudo rfkill list
  2. 8: hci0: Bluetooth
  3. Soft blocked: no
  4. Hard blocked: no
  5. 9: phy4: Wireless LAN
  6. Soft blocked: no
  7. Hard blocked: no
  8. [After sleep/awake there are no changes]
  9.  
  10. $ sudo lshw -class network
  11. *-network
  12. description: Wireless interface
  13. physical id: 1
  14. bus info: usb@1:4
  15. logical name: wlan0
  16. serial: 38:a2:8c:dd:90:fb
  17. capabilities: ethernet physical wireless
  18. configuration: broadcast=yes driver=rtl8xxxu driverversion=4.13.0-17-generic firmware=N/A link=no multicast=yes wireless=IEEE 802.11
  19. [After sleep/awake nothing changes]
  20.  
  21. $ ifconfig -a
  22. lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
  23. inet 127.0.0.1 netmask 255.0.0.0
  24. inet6 ::1 prefixlen 128 scopeid 0x10<host>
  25. loop txqueuelen 1000 (Local Loopback)
  26. RX packets 412 bytes 25856 (25.8 KB)
  27. RX errors 0 dropped 0 overruns 0 frame 0
  28. TX packets 412 bytes 25856 (25.8 KB)
  29. TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
  30.  
  31. wlan0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
  32. ether 38:a2:8c:dd:90:fb txqueuelen 1000 (Ethernet)
  33. RX packets 0 bytes 0 (0.0 B)
  34. RX errors 0 dropped 0 overruns 0 frame 0
  35. TX packets 0 bytes 0 (0.0 B)
  36. TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
  37. [After sleep/awake nothing changes]
  38.  
  39. $ ip link show
  40. 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
  41. link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
  42. 4: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DORMANT group default qlen 1000
  43. link/ether 38:a2:8c:dd:90:fb brd ff:ff:ff:ff:ff:ff
  44. [After sleep/awake nothing changes]
  45.  
  46. $ dmesg | grep 1-4
  47. [ 3.832315] usb 1-4: new high-speed USB device number 3 using xhci_hcd
  48. [ 3.972863] usb 1-4: New USB device found, idVendor=0bda, idProduct=b720
  49. [ 3.972866] usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
  50. [ 3.972868] usb 1-4: Product: 802.11n WLAN Adapter
  51. [ 3.972870] usb 1-4: Manufacturer: Realtek
  52. [ 3.972871] usb 1-4: SerialNumber: 00e04c000001
  53. [ 8.098010] usb 1-4: This Realtek USB WiFi dongle (0x0bda:0xb720) is untested!
  54. [ 8.098014] usb 1-4: Please report results to Jes.Sorensen@gmail.com
  55. [ 8.252101] usb 1-4: Vendor: Realtek
  56. [ 8.252104] usb 1-4: Product: 802.11n WLAN Adapter
  57. [ 8.252106] usb 1-4: rtl8723bu_parse_efuse: dumping efuse (0x200 bytes):
  58. (large dump here)
  59. [ 8.252226] usb 1-4: RTL8723BU rev E (SMIC) 1T1R, TX queues 3, WiFi=1, BT=1, GPS=0, HI PA=0
  60. [ 8.252229] usb 1-4: RTL8723BU MAC: 38:a2:8c:dd:90:fb
  61. [ 8.252231] usb 1-4: rtl8xxxu: Loading firmware rtlwifi/rtl8723bu_nic.bin
  62. [ 8.254976] usb 1-4: Firmware revision 35.0 (signature 0x5301)
  63. ##### After sleep/awake #####
  64. [ 509.983513] usb 1-4: disconnecting
  65. [ 509.983519] usb 1-4: Device still attached, trying to reset
  66. [ 510.105432] usb 1-4: reset high-speed USB device number 3 using xhci_hcd
  67. [ 513.226029] usb 1-4: reset high-speed USB device number 3 using xhci_hcd
  68. [ 513.367975] usb 1-4:1.0: rebind failed: -517
  69. [ 513.368008] usb 1-4:1.2: rebind failed: -517
  70. [ 515.051381] usb 1-4: This Realtek USB WiFi dongle (0x0bda:0xb720) is untested!
  71. [ 515.051394] usb 1-4: Please report results to Jes.Sorensen@gmail.com
  72. [ 515.112651] usb 1-4: Vendor: Realtek
  73. [ 515.112656] usb 1-4: Product: 802.11n WLAN Adapter
  74. [ 515.112659] usb 1-4: rtl8723bu_parse_efuse: dumping efuse (0x200 bytes):
  75. (large dump here)
  76. [ 515.112827] usb 1-4: RTL8723BU rev E (SMIC) 1T1R, TX queues 3, WiFi=1, BT=1, GPS=0, HI PA=0
  77. [ 515.112831] usb 1-4: RTL8723BU MAC: 38:a2:8c:dd:90:fb
  78. [ 515.112834] usb 1-4: rtl8xxxu: Loading firmware rtlwifi/rtl8723bu_nic.bin
  79. [ 515.112863] usb 1-4: Firmware revision 35.0 (signature 0x5301)
  80. [ 517.457437] usb 1-4: USB disconnect, device number 3
  81. [ 517.563643] usb 1-4: rtl8xxxu_active_to_lps: RX poll timed out (0x05f8)
  82. [ 517.581014] usb 1-4: rtl8723bu_active_to_emu: Disabling MAC timed out
  83. [ 517.581019] usb 1-4: disconnecting
  84. [ 522.113676] usb 1-4: new high-speed USB device number 5 using xhci_hcd
  85. [ 522.258117] usb 1-4: New USB device found, idVendor=0bda, idProduct=b720
  86. [ 522.258122] usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
  87. [ 522.258124] usb 1-4: Product: 802.11n WLAN Adapter
  88. [ 522.258126] usb 1-4: Manufacturer: Realtek
  89. [ 522.258128] usb 1-4: SerialNumber: 00e04c000001
  90. [ 522.266921] usb 1-4: This Realtek USB WiFi dongle (0x0bda:0xb720) is untested!
  91. [ 522.266925] usb 1-4: Please report results to Jes.Sorensen@gmail.com
  92. [ 522.330063] usb 1-4: Vendor: Realtek
  93. [ 522.330066] usb 1-4: Product: 802.11n WLAN Adapter
  94. [ 522.330069] usb 1-4: rtl8723bu_parse_efuse: dumping efuse (0x200 bytes):
  95. (large dump here)
  96. [ 522.330177] usb 1-4: RTL8723BU rev E (SMIC) 1T1R, TX queues 3, WiFi=1, BT=1, GPS=0, HI PA=0
  97. [ 522.330180] usb 1-4: RTL8723BU MAC: 38:a2:8c:dd:90:fb
  98. [ 522.330182] usb 1-4: rtl8xxxu: Loading firmware rtlwifi/rtl8723bu_nic.bin
  99. [ 522.330205] usb 1-4: Firmware revision 35.0 (signature 0x5301)
  100. [ 525.618001] usb 1-4: rtl8xxxu_bss_info_changed: HT supported
  101.  
  102. $ dmesg | grep rtl
  103. [ 7.899970] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
  104. [ 7.899976] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_config.bin
  105. [ 7.910765] bluetooth hci0: Direct firmware load for rtl_bt/rtl8723b_config.bin failed with error -2
  106. [ 7.910771] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
  107. [ 8.252106] usb 1-4: rtl8723bu_parse_efuse: dumping efuse (0x200 bytes):
  108. [ 8.252231] usb 1-4: rtl8xxxu: Loading firmware rtlwifi/rtl8723bu_nic.bin
  109. [ 9.230698] usbcore: registered new interface driver rtl8xxxu
  110. ##### After sleep/awake #####
  111. [ 515.068531] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
  112. [ 515.068535] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_config.bin
  113. [ 515.068560] bluetooth hci0: Direct firmware load for rtl_bt/rtl8723b_config.bin failed with error -2
  114. [ 515.068563] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
  115. [ 515.112659] usb 1-4: rtl8723bu_parse_efuse: dumping efuse (0x200 bytes):
  116. [ 515.112834] usb 1-4: rtl8xxxu: Loading firmware rtlwifi/rtl8723bu_nic.bin
  117. [ 517.563643] usb 1-4: rtl8xxxu_active_to_lps: RX poll timed out (0x05f8)
  118. [ 517.581014] usb 1-4: rtl8723bu_active_to_emu: Disabling MAC timed out
  119. [ 522.278986] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
  120. [ 522.278991] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_config.bin
  121. [ 522.279023] bluetooth hci0: Direct firmware load for rtl_bt/rtl8723b_config.bin failed with error -2
  122. [ 522.279026] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
  123. [ 522.330069] usb 1-4: rtl8723bu_parse_efuse: dumping efuse (0x200 bytes):
  124. [ 522.330182] usb 1-4: rtl8xxxu: Loading firmware rtlwifi/rtl8723bu_nic.bin
  125. [ 525.618001] usb 1-4: rtl8xxxu_bss_info_changed: HT supported
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