From owner-freebsd-wireless@freebsd.org Sat Sep 12 15:05:47 2020 Return-Path: Delivered-To: freebsd-wireless@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id EC75F3DA5D4 for ; Sat, 12 Sep 2020 15:05:47 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (mailman.nyi.freebsd.org [IPv6:2610:1c1:1:606c::50:13]) by mx1.freebsd.org (Postfix) with ESMTP id 4BpbXq61zdz45D4 for ; Sat, 12 Sep 2020 15:05:47 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id CEDD63DA89E; Sat, 12 Sep 2020 15:05:47 +0000 (UTC) Delivered-To: wireless@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id CEA6F3DA857 for ; Sat, 12 Sep 2020 15:05:47 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4BpbXq58KVz45FT for ; Sat, 12 Sep 2020 15:05:47 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 941F8170EC for ; Sat, 12 Sep 2020 15:05:47 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 08CF5l9i019830 for ; Sat, 12 Sep 2020 15:05:47 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 08CF5leA019829 for wireless@FreeBSD.org; Sat, 12 Sep 2020 15:05:47 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: wireless@FreeBSD.org Subject: [Bug 247528] RTL8192EU usb wifi dongle can't connect to AP Date: Sat, 12 Sep 2020 15:05:47 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: usb X-Bugzilla-Version: 12.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: danilo@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: usb@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: "Discussions of 802.11 stack, tools device driver development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Sep 2020 15:05:48 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D247528 --- Comment #4 from Danilo Egea Gondolfo --- Regarding the ifconfig up and down issue, it seems that the function r92e_power_off() is breaking the firmware state machine. According to the driver provided by the vendor [1], transitioning the device from Active to Low Power State consists of this sequence of steps [2]. The driver in fact does that (plus a few more actions) when you ifconfig down i= t. In fact, interrupting the code after it moves the state machine to LPS (inserting a return; right here [3] for example) fixes the device-being-disconnected-from-the-bus issue, what is probably due to a cra= sh in the firmware. Hopefully it will provide some insight to whoever looks into this issue in = the future. It's still not working when used with wpa_supplicant.=20 [1] - https://static.tp-link.com/TL-WN823N(EU)_V2_160315_Linux_1479970241132h.zip [2] - https://gitlab.cosmoproducts.de/cosmocard/rtl8192eu-linux-driver/-/blob/c50= f3f80b97a5ab2d2582021ae93e0a5f07118b7/include/Hal8192EPwrSeq.h#L106 [3] - https://github.com/freebsd/freebsd/blob/master/sys/dev/rtwn/rtl8192e/r92e_i= nit.c#L327 --=20 You are receiving this mail because: You are on the CC list for the bug.=