Linux freezes after a time while running

[Michal Kazior]

On 28 October 2016 at 21:05, Conrad Kostecki <ck+ath10k at bl4ckb0x.de> wrote:
> Hi!
> In order to create a dual band AP, I've bought two Compex LE900VX cards.
> As the mainboard has only one PCIe slot, I also bought a Mikrotik RB14e miniPCIe->PCIe adapter, which can carry up to 4 miniPCIe cards.
>
> Currently, I am running HostAPd 2.6 and Kernel 4.8.4 with 10.2.4.70.56 ath10k-firmware.
> Both cards are being detected fine and working.
>
> When I do start HostAPd, the whole server just freezes after a time, usally after 30-120 minutes. Until it freezes, HostAPd is working perfectly fine. When I do not start HostAPd, no freeze occurs and the whole system is running stable.
>
> No errors were logged in dmesg.
>
> Any Ideas, how to debug this?
> Are the cards maybe faulty?
> I already asked on the HostAPd-mailinglist and was asked, to ask here ;-)

You could try loading ath10k_pci with reset_mode=1 parameter.

Cold reset is known to cause some problems after firmware certain
crashes and I've personally experienced system freezes on x86 (MIPS
tends to spit "data bus error" and doesn't lock up).


Michał