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I just bought the new Dell XPS 9360.

I've had two main issues after installing latest Ubuntu:

  • touchpad config, which I fixed thanks to this post
  • wifi being reallllllly slow, not all the time, not on every wifi, but too often. Most of the time it starts by working reasonably, until falling down to super slowness interrupted by temporary disconnections...

I read several things on the topic, but until now without success:

  • This one did not have any observable effect
  • This post seems to relate to an old kernel-header issue so I doubt it still applies
  • In there: I tried several tips, without success for now

Anyone experiencing this? Any fix to offer? Or at least some tips to investigate (where are the logs, what are the layers on the network config in linux, what is modprobe.d, why does ath10k lives along several other versions in /lib/firmware etc.)

Using:

$ apt-cache search linux-headers-$(uname -r)
linux-headers-4.4.0-79-generic - Linux kernel headers for version 4.4.0 on 64 bit x86 SMP

Cheers

EDIT: Here's the output of lspci -knn | grep Net -A3:

➜  ~ lspci -knn | grep Net -A3
3a: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
3b:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader [10ec:525a] (rev 01)
Augustin Riedinger
  • 478

1 Answers1

-1

I had the same issue with a HP and realtek wifi card. The repository drivers didn't work the card properly. After searching threads for a couple of days, I finally found (by trial and error) a driver source that worked.

first, try compiling the drivers yourself with (make,make install) to eliminate the possibility of a kernel mismatch. if that doesn't work search for newer drivers. if you get source, it doesn't matter what distro they come from because they will be compiled to match your kernel.

EDIT: try these: wget https://github.com/FireWalkerX/ath10k-firmware/raw/master/QCA6174/hw3.0/board-2.bin

ravery
  • 6,924