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Date: Wed, 3 Jul 2019 08:59:19 -0400 From: Jes Sorensen <jes.sorensen@...il.com> To: Daniel Drake <drake@...lessm.com> Cc: Chris Chiu <chiu@...lessm.com>, Kalle Valo <kvalo@...eaurora.org>, David Miller <davem@...emloft.net>, linux-wireless <linux-wireless@...r.kernel.org>, netdev <netdev@...r.kernel.org>, Linux Kernel <linux-kernel@...r.kernel.org>, Linux Upstreaming Team <linux@...lessm.com>, Larry Finger <Larry.Finger@...inger.net> Subject: Re: [PATCH] rtl8xxxu: Fix wifi low signal strength issue of RTL8723BU On 7/3/19 3:42 AM, Daniel Drake wrote: > On Tue, Jul 2, 2019 at 8:42 PM Jes Sorensen <jes.sorensen@...il.com> wrote: >> We definitely don't want to bring over the vendor code, since it's a >> pile of spaghetti, but we probably need to get something sorted. This >> went down the drain when the bluetooth driver was added without taking >> it into account - long after this driver was merged. > > Yeah, I didn't mean bring over quite so literally.. Chris is studying > it and figuring out the neatest way to reimplement the required bits. > > As for the relationship with bluetooth.. actually the bug that Chris > is working on here is that the rtl8xxxu wifi signal is totally > unusable *until* the bluetooth driver is loaded. So this is not my experience at all from when I wrote the code. The 8723bu dongle I used for it came up just fine. > Once the bluetooth driver is loaded, at the point of bluetooth > firmware upload, the rtl8xxxu signal magiaclly strength becomes good. > I think this is consistent with other rtl8xxxu problem reports that we > saw lying around, although they had not been diagnosed in so much > detail. See this is the very opposite of what I have experienced. The bluetooth driver ruins the signal when it's loaded with my dongle. > The rtl8723bu vendor driver does not suffer this problem, it works > fine with or without the bluetooth driver in place. My point is this seems to be very dongle dependent :( We have to be careful not breaking it for some users while fixing it for others. Cheers, Jes
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