I have a new Dell XPS 15 running Ubuntu 17.10. My wireless keeps disconnecting every five minutes, so I have to manually disconnect and reconnect.
This is the output of lspci -knn | grep Net -A3.
02:00.0 Network controller [0280]: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter [168c:003e] (rev 32)
Subsystem: Bigfoot Networks, Inc. QCA6174 802.11ac Wireless Network Adapter [1a56:1535]
Kernel driver in use: ath10k_pci
Kernel modules: ath10k_pci
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader [10ec:525a] (rev 01)
This is the output of uname -ar.
Linux server1 4.13.0-16-generic #19-Ubuntu SMP Wed Oct 11 18:35:14 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
This is the hardware information from sudo lshw -short.
H/W path Device Class Description
=================================================
system XPS 15 9560 (07BE)
/0 bus 05FFDN
/0/0 memory 64KiB BIOS
/0/45 memory 16GiB System Memory
/0/45/0 memory 8GiB SODIMM DDR4 Synchronous Unbuffered (Unregistered) 2400 MHz (0,4 ns)
/0/45/1 memory 8GiB SODIMM DDR4 Synchronous Unbuffered (Unregistered) 2400 MHz (0,4 ns)
/0/49 memory 256KiB L1 cache
/0/4a memory 1MiB L2 cache
/0/4b memory 6MiB L3 cache
/0/4c processor Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
/0/100 bridge Intel Corporation
/0/100/1 bridge Skylake PCIe Controller (x16)
/0/100/1/0 display GP107M [GeForce GTX 1050 Mobile]
/0/100/2 display Intel Corporation
/0/100/4 generic Skylake Processor Thermal Subsystem
/0/100/14 bus Sunrise Point-H USB 3.0 xHCI Controller
/0/100/14/0 usb1 bus xHCI Host Controller
/0/100/14/0/1 input USB Receiver
/0/100/14/0/4 communication Bluetooth wireless interface
/0/100/14/0/c multimedia Integrated_Webcam_HD
/0/100/14/1 usb2 bus xHCI Host Controller
/0/100/14.2 generic Sunrise Point-H Thermal subsystem
/0/100/15 generic Sunrise Point-H Serial IO I2C Controller #0
/0/100/15.1 generic Sunrise Point-H Serial IO I2C Controller #1
/0/100/16 communication Sunrise Point-H CSME HECI #1
/0/100/17 storage Sunrise Point-H SATA Controller [AHCI mode]
/0/100/1c bridge Sunrise Point-H PCI Express Root Port #1
/0/100/1c/0 wlp2s0 network QCA6174 802.11ac Wireless Network Adapter
/0/100/1c.1 bridge Sunrise Point-H PCI Express Root Port #2
/0/100/1c.1/0 generic RTS525A PCI Express Card Reader
/0/100/1d bridge Sunrise Point-H PCI Express Root Port #9
/0/100/1d/0 storage Toshiba America Info Systems
/0/100/1d.4 bridge Sunrise Point-H PCI Express Root Port #13
/0/100/1d.6 bridge Sunrise Point-H PCI Express Root Port #15
/0/100/1f bridge Sunrise Point-H LPC Controller
/0/100/1f.2 memory Memory controller
/0/100/1f.3 multimedia Intel Corporation
/0/100/1f.4 bus Sunrise Point-H SMBus
/1 power DELL GPM0365
lsusb reports these USB controllers.
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 0cf3:e300 Atheros Communications, Inc.
Bus 001 Device 004: ID 1bcf:2b95 Sunplus Innovation Technology Inc.
Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
This is the full output of lspci -knn.
00:00.0 Host bridge [0600]: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers [8086:5910] (rev 05)
Subsystem: Dell Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers [1028:07be]
00:01.0 PCI bridge [0604]: Intel Corporation Skylake PCIe Controller (x16) [8086:1901] (rev 05)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:591b] (rev 04)
Subsystem: Dell Device [1028:07be]
Kernel driver in use: i915
Kernel modules: i915
00:04.0 Signal processing controller [1180]: Intel Corporation Skylake Processor Thermal Subsystem [8086:1903] (rev 05)
Subsystem: Dell Skylake Processor Thermal Subsystem [1028:07be]
Kernel driver in use: proc_thermal
Kernel modules: processor_thermal_device
00:14.0 USB controller [0c03]: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller [8086:a12f] (rev 31)
Subsystem: Dell Sunrise Point-H USB 3.0 xHCI Controller [1028:07be]
Kernel driver in use: xhci_hcd
00:14.2 Signal processing controller [1180]: Intel Corporation Sunrise Point-H Thermal subsystem [8086:a131] (rev 31)
Subsystem: Dell Sunrise Point-H Thermal subsystem [1028:07be]
Kernel driver in use: intel_pch_thermal
Kernel modules: intel_pch_thermal
00:15.0 Signal processing controller [1180]: Intel Corporation Sunrise Point-H Serial IO I2C Controller #0 [8086:a160] (rev 31)
Subsystem: Dell Sunrise Point-H Serial IO I2C Controller [1028:07be]
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
00:15.1 Signal processing controller [1180]: Intel Corporation Sunrise Point-H Serial IO I2C Controller #1 [8086:a161] (rev 31)
Subsystem: Dell Sunrise Point-H Serial IO I2C Controller [1028:07be]
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
00:16.0 Communication controller [0780]: Intel Corporation Sunrise Point-H CSME HECI #1 [8086:a13a] (rev 31)
Subsystem: Dell Sunrise Point-H CSME HECI [1028:07be]
Kernel driver in use: mei_me
Kernel modules: mei_me
00:17.0 SATA controller [0106]: Intel Corporation Sunrise Point-H SATA Controller [AHCI mode] [8086:a103] (rev 31)
Subsystem: Dell Sunrise Point-H SATA Controller [AHCI mode] [1028:07be]
Kernel driver in use: ahci
Kernel modules: ahci
00:1c.0 PCI bridge [0604]: Intel Corporation Sunrise Point-H PCI Express Root Port #1 [8086:a110] (rev f1)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.1 PCI bridge [0604]: Intel Corporation Sunrise Point-H PCI Express Root Port #2 [8086:a111] (rev f1)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1d.0 PCI bridge [0604]: Intel Corporation Sunrise Point-H PCI Express Root Port #9 [8086:a118] (rev f1)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1d.4 PCI bridge [0604]: Intel Corporation Sunrise Point-H PCI Express Root Port #13 [8086:a11c] (rev f1)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1d.6 PCI bridge [0604]: Intel Corporation Sunrise Point-H PCI Express Root Port #15 [8086:a11e] (rev f1)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1f.0 ISA bridge [0601]: Intel Corporation Sunrise Point-H LPC Controller [8086:a152] (rev 31)
Subsystem: Dell Sunrise Point-H LPC Controller [1028:07be]
00:1f.2 Memory controller [0580]: Intel Corporation Sunrise Point-H PMC [8086:a121] (rev 31)
Subsystem: Dell Sunrise Point-H PMC [1028:07be]
00:1f.3 Audio device [0403]: Intel Corporation Device [8086:a171] (rev 31)
Subsystem: Dell Device [1028:07be]
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:1f.4 SMBus [0c05]: Intel Corporation Sunrise Point-H SMBus [8086:a123] (rev 31)
Subsystem: Dell Sunrise Point-H SMBus [1028:07be]
Kernel modules: i2c_i801
01:00.0 3D controller [0302]: NVIDIA Corporation GP107M [GeForce GTX 1050 Mobile] [10de:1c8d] (rev a1)
Subsystem: Dell GP107M [GeForce GTX 1050 Mobile] [1028:07be]
Kernel driver in use: nvidia
Kernel modules: nvidiafb, nouveau, nvidia_384_drm, nvidia_384
02:00.0 Network controller [0280]: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter [168c:003e] (rev 32)
Subsystem: Bigfoot Networks, Inc. QCA6174 802.11ac Wireless Network Adapter [1a56:1535]
Kernel driver in use: ath10k_pci
Kernel modules: ath10k_pci
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader [10ec:525a] (rev 01)
Subsystem: Dell RTS525A PCI Express Card Reader [1028:07be]
Kernel driver in use: rtsx_pci
Kernel modules: rtsx_pci
04:00.0 Non-Volatile memory controller [0108]: Toshiba America Info Systems Device [1179:0115] (rev 01)
Subsystem: Toshiba America Info Systems Device [1179:0001]
Kernel driver in use: nvme
Kernel modules: nvme
Please help me with this annoying issue.
Since I cannot comment, I'm writing an answer.
I'm quite sure that this is a duplicate of WiFi unstable after 17.10 update.
The solution is to upgrade the firmware from the repository maintained by Qualcomm at https://github.com/kvalo/ath10k-firmware.
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