Return-path: Received: from mail-ot0-f173.google.com ([74.125.82.173]:43866 "EHLO mail-ot0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751123AbdLLCVs (ORCPT ); Mon, 11 Dec 2017 21:21:48 -0500 Received: by mail-ot0-f173.google.com with SMTP id y10so16558442otg.10 for ; Mon, 11 Dec 2017 18:21:48 -0800 (PST) Subject: Re: rtl8723bu support on Complex 11t To: James Hemsing , linux-wireless@vger.kernel.org References: From: Larry Finger Message-ID: <07a73398-fbc8-7c84-9512-edff9cbc5e89@lwfinger.net> (sfid-20171212_032151_681371_9BDC8AAF) Date: Mon, 11 Dec 2017 20:21:45 -0600 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: On 12/11/2017 06:59 PM, James Hemsing wrote: > Hello, > > I have a Complex 11t tablet with this wireless card on USB. The kernel > driver supports it, but even at its best, it doesn't work at full > speed and frequently loses connections, whereas Windows 10 doesn't > have any problems. I'd be happy to test and debug code, and provide > whatever help I can to improve the driver for this device. Here is > some system information. The kernel I'm currently using is version > 4.13.0 on Ubuntu 17.10. > > Thanks, > James > > [ 4.031513] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b > lmp_ver=06 lmp_subver=8723 > [ 4.031515] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_config.bin > [ 4.032132] bluetooth hci0: Direct firmware load for > rtl_bt/rtl8723b_config.bin failed with error -2 > [ 4.032136] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin > [ 4.160515] usb 1-6: rtl8723bu_parse_efuse: dumping efuse (0x200 bytes): > [ 4.160667] usb 1-6: RTL8723BU rev E (SMIC) 1T1R, TX queues 3, > WiFi=1, BT=1, GPS=0, HI PA=0 > [ 4.160670] usb 1-6: RTL8723BU MAC: 7c:c7:09:69:b6:3a > [ 4.160674] usb 1-6: rtl8xxxu: Loading firmware rtlwifi/rtl8723bu_nic.bin > [ 5.038493] 8723bu: loading out-of-tree module taints kernel. > [ 5.039092] 8723bu: module verification failed: signature and/or > required key missing - tainting kernel Why are you loading BOTH rtl8xxxu and 8723bu? The conflict between them will cause all kinds of problems. Larry