On Wed, Jan 10, 2018 at 12:15 PM, Carlo Caione <carlo@xxxxxxxxxxxx> wrote: > Hi, > this is a follow up email to [0] since the problem was never fully > investigated / solved and I keep seeing the same problem also on my > hardware. > > Also in my case the hardware is a rtl8723bt transceiver > (0x0bda:0xb720), this time shipped on the internal USB bus in a cheap > laptop branded Zyrex Sky 232. > > As already reported by Mylene the problem is that using this > transceiver and the latest Linus master you can barely see any WiFi > network around and also when a WiFi network is actually seen, the > connection is impossible since the signal strength is too low to have > a reliable connection. Of course during my tests BT is off and no BT > driver is probed at all. > > Using the downstream driver at [1] everything works correctly. > > I tried to debug a bit the issue, in particular comparing functions > and registers related to the antenna setup (.power_on, .enable_rf, > .phy_init_antenna_selection, .phy_iq_calibrate hooks) but everything > seems pretty much the same on the two drivers (even though slightly > differences do exist). > > Any idea / suggestion on how to debug this problem? I guess it's worth > to start looking at this since several platforms are being affected > now. Jes, anything to comment about this issue? (ping) -- Carlo Caione | +44.7384.69.16.04 | Endless
