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Thread: RTL8191su Wireless USB not waking up from sleep

  1. #1
    Join Date
    Jul 2007
    Ubuntu 13.04 Raring Ringtail

    Question RTL8191su Wireless USB not waking up from sleep

    Hi there,

    I have a wireless usb dongle with realtek RTL8191SU chipset in it. The device is working fine other than the slight problem I am having.

    When the computer goes to sleep the device does not resume working. I have to unplug and re-plug it to work.

    I am assuming my problem is similar to the one in this thread.

    I ran lsusb the relevant section is below:

    Bus 001 Device 006: ID 0bda:8172 Realtek Semiconductor Corp. RTL8191SU 802.11n WLAN Adapter

    I also ran dmesg to see what was going on

    [  611.191241] PM: resume devices took 5.520 seconds
    [  611.191283] PM: Finishing wakeup.
    [  611.191284] Restarting tasks ... done.
    [  612.961180] ADDRCONF(NETDEV_UP): wlan0: link is not ready
    [  613.036894] r8169 0000:03:00.0: eth0: link down
    [  613.037294] ADDRCONF(NETDEV_UP): eth0: link is not ready
    [  613.063079] r8712u: in r8711_wx_set_scan: bDriverStopped=1
    [  613.160092] r8712u: in r8711_wx_set_scan: bDriverStopped=1
    [  633.137163] r8712u: in r8711_wx_set_scan: bDriverStopped=1
    [  639.436292] usb 1-1.6: USB disconnect, device number 5
    [  644.492223] usb 1-1.6: new high-speed USB device number 6 using ehci_hcd
    [  644.587530] r8712u: DriverVersion: v7_0.20100831
    [  644.587552] r8712u: register rtl8712_netdev_ops to netdev_ops
    [  644.587555] r8712u: USB_SPEED_HIGH with 4 endpoints
    [  644.588087] r8712u: Boot from EFUSE: Autoload OK
    [  645.199026] r8712u: CustomerID = 0x0000
    [  645.199030] r8712u: MAC Address from efuse = 94:0c:6d:8f:f4:45
    [  645.199033] r8712u: Loading firmware from "rtlwifi/rtl8712u.bin"
    I think this means the driver is not restarted upon waking up. You can also see that once I plug it off and on again, it is reinitializing the device.

    What can be done to solve this?

    Thanks in advance

  2. #2
    Join Date
    Jul 2007
    Ubuntu 13.04 Raring Ringtail

    Re: RTL8191su Wireless USB not waking up from sleep

    OK I found the solution.

    I found the drivers name with lsmod which in my case was r8712u

    sudo lsmod

    v4l2_compat_ioctl32    17128  1 videodev
    snd_seq                61896  2 snd_seq_midi,snd_seq_midi_event
    nvidia              12336440  58 
    r8712u                189603  0 
    snd_timer              29990  2 snd_pcm,snd_seq
    snd_seq_device         14540  3 snd_seq_midi,snd_rawmidi,snd_seq
    wmi                    19256  1 mxm_wmi
    mei                    41616  0

    Then I added a file into /etc/rc/config.d/90_rtl

    sudo nano /etc/pm/config.d/90_rtl

    and wrote the following line into it

    The wireless was able to resume after suspending the computer after this.

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