Your system information

• Steam client version: June 14 2016
• Distribution (e.g. Ubuntu): Linux Mint 17.3
• Opted into Steam client beta?: [Yes/No] No
• Have you checked for system updates?: [Yes/No] Yes

Please describe your issue in as much detail as possible:

Steam controller does not work within Steam after resuming from sleep mode. To resume functionality, Steam must be restarted - however, in this case the Steam process also hangs on exit and must be killed manually. When running with the console visible, the following log message is repeated in a loop:

process 2992: arguments to dbus_connection_ref() were incorrect, assertion "connection->generation == _dbus_current_generation" failed in file ../../dbus/dbus-connection.c line 2656.
This is normally a bug in some application using the D-Bus library.

Steam continues to function normally other than the controller not responding (i.e, keyboard controls work, games launch, etc)

Steps for reproducing this issue:

1. Plug in a steam controller
2. Put the computer to sleep
3. Wake it back up

Computer Information:
    Manufacturer:  Clevo
    Model: P17SM-A
    Form Factor: Laptop
    No Touch Input Detected

Processor Information:
    CPU Vendor:  GenuineIntel
    CPU Family:  0x6
    CPU Model:  0x3c
    CPU Stepping:  0x3
    CPU Type:  0x0
    Speed:  3800 Mhz
    8 logical processors
    4 physical processors
    HyperThreading:  Supported
    FCMOV:  Supported
    SSE2:  Supported
    SSE3:  Supported
    SSSE3:  Supported
    SSE4a:  Unsupported
    SSE41:  Supported
    SSE42:  Supported
    AES:  Supported
    AVX:  Supported
    CMPXCHG16B:  Supported
    LAHF/SAHF:  Supported
    PrefetchW:  Unsupported

Network Information:
    Network Speed:  

Operating System Version:
    Linux Mint 17.3 Rosa (64 bit)
    Kernel Name:  Linux
    Kernel Version:  4.4.0-22-generic
    X Server Vendor:  The X.Org Foundation
    X Server Release:  11701000
    X Window Manager:  Mutter (Muffin)
    Steam Runtime Version:  steam-runtime-release_2016-02-23

Video Card:
    Driver:  NVIDIA Corporation GeForce GTX 880M/PCIe/SSE2

    Driver Version:  4.5.0 NVIDIA 364.19
    OpenGL Version: 4.5
    Desktop Color Depth: 24 bits per pixel
    Monitor Refresh Rate: 60 Hz
    VendorID:  0x10de
    DeviceID:  0x1198
    Revision Not Detected
    Number of Monitors:  1
    Number of Logical Video Cards:  2
    Primary Display Resolution:  1920 x 1080
    Desktop Resolution: 1920 x 1080
    Primary Display Size: 15.04" x 8.46"  (17.24" diag)
                                            38.2cm x 21.5cm  (43.8cm diag)
    Primary VRAM: 8192 MB

Sound card:
    Audio device: Intel Haswell HDMI

Memory:
    RAM:  32091 Mb

Miscellaneous:
    UI Language:  English
    LANG:  en_CA.UTF-8
    Microphone:  Not set
    Total Hard Disk Space Available:  448627 Mb
    Largest Free Hard Disk Block:  196749 Mb
    VR Headset: None detected