On 11/05/2017 03:15 PM, Nik Nyby wrote:
I also want to note that adding rtl8821ae.aspm=0 to my grub kernel boot command
doesn't fix my problem. (I'm building this driver into the kernel, not as a
module). My connection dropping problem is fixed only if I comment out the aspm
init code in the driver, per this patch:
https://patchwork.kernel.org/patch/9951511/
Disabling all of _rtl8821ae_enable_aspm_back_door() may not be wise. We tried
that patch as part of debugging.
That routine consists of two mdio r/w sequences, and 3 dbi r/w sequences. The
third one of the latter is only used for RTL8812AE, thus it can be ignored.
What happens if you try disabling those r/w pairs one at a time? It is possible
that one, or more of them, should be disabled when aspm is zero. It should not
matter whether the driver is built in, or loaded as a module. Please note that I
never build that code in as I always want the option of refreshing the driver
without rebooting.
Larry
