Re: [Bug ?] 10ec:b723 Realtek RTL8723BE wireless card drops connection

[James Cameron <quozl@laptop.org>]

On Sun, Jun 14, 2015 at 06:13:56PM -0500, Larry Finger wrote:
> On 06/14/2015 06:04 PM, James Cameron wrote:
> >On Sun, Jun 14, 2015 at 10:10:30AM -0500, Larry Finger wrote:
> >>To address your problem, power saving does not work correctly on
> >>this device. That is why there are numerous posts on the web telling
> >>people to use ips=0. It seems that Ubuntu people never look at
> >>anything but the Ubuntu literature; however, I'm sure that I posted
> >>this "suggestion" there as well. The Realtek group is currently
> >>rewriting the entire dynamic management code for all their drivers.
> >>When complete, this should improve performance and should help the
> >>power-save condition. No, I do not know when the new code will be
> >>ready, or how much improvement it will make.
> >
> >Thanks for summary.
> >
> >OLPC is also seeing the issue.  Power saving mode impacts battery run
> >time; one of our design goals.  ips=0 seems to solve with 3.19, but
> >not fully with 4.1-rc7; still some periods of packet loss.
> >
> >I offer to test any rtl8723be changes.
> 
> Please do a bisection between 4.1-rc7 and 3.19.

Thanks.  But I was too hasty in reporting a good result.

Now no difference across those kernel versions; still some
periods of packet loss with ips=0.

Workaround is to use both ips=0 and fwlps=0.  We'll ship with that
unless we hear of a fix.

-- 
James Cameron
http://quozl.linux.org.au/