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/ -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
