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Date: Fri, 4 Jan 2019 20:44:39 -0600 From: Larry Finger <Larry.Finger@...inger.net> To: Bernd Edlinger <bernd.edlinger@...mail.de>, Ping-Ke Shih <pkshih@...ltek.com>, Kalle Valo <kvalo@...eaurora.org>, "David S. Miller" <davem@...emloft.net>, "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH 1/4] rtlwifi: rtl8723ae: Take the FW LPS mode handling out On 1/4/19 6:48 AM, Bernd Edlinger wrote: > This appears to trigger a firmware bug and causes severe > problems with rtl8723ae PCI devices. > > When the power save mode is activated for longer periods > of time the firmware stops to receive any packets. > > This problem was exposed by commit 873ffe154ae0 ("rtlwifi: > Fix logic error in enter/exit power-save mode"). > > Previously the power save mode was only active rarely and > only for a short time so that the problem was not noticeable. > > Signed-off-by: Bernd Edlinger <bernd.edlinger@...mail.de> > --- While the Realtek firmware group has a chance to look for a bug, I would like you to perform a couple of tests on the original code. The driver has three module parameters that affect power save. The 'modinfo rtl8723ae' command lists them as parm: ips:Set to 0 to not use link power save (default 1) (bool) parm: swlps:Set to 1 to use SW control power save (default 0) (bool) parm: fwlps:Set to 1 to use FW control power save (default 1) (bool) If you were to load rtl8723ae with 'ips=0', does it still fail? If you were to load the driver with 'swlps=1 fwlps=0', does it still fail? Thanks for debugging this problem. Larry
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