Return-path: Received: from mail-qg0-f53.google.com ([209.85.192.53]:33300 "EHLO mail-qg0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752093AbbCZQ4O (ORCPT ); Thu, 26 Mar 2015 12:56:14 -0400 Received: by qgfa8 with SMTP id a8so100434051qgf.0 for ; Thu, 26 Mar 2015 09:56:14 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <5514377C.1070906@lwfinger.net> References: <5514377C.1070906@lwfinger.net> Date: Thu, 26 Mar 2015 18:56:13 +0200 Message-ID: (sfid-20150326_175618_010940_3456EFCE) Subject: Re: mediatek mt7630e and ksoftirqd CPU load From: George Moutsopoulos Cc: linux-wireless@vger.kernel.org Content-Type: text/plain; charset=UTF-8 To: unlisted-recipients:; (no To-header on input) Sender: linux-wireless-owner@vger.kernel.org List-ID: Thank you Larry for the prompt reply. This is very clear. Regards, George On Thu, Mar 26, 2015 at 6:44 PM, Larry Finger wrote: > On 03/26/2015 11:12 AM, George Moutsopoulos wrote: >> >> Dear developers, >> >> if this is not the right place to post this, sorry for the spam. I >> haven't filed a bug report yet. Tell me if I should. I am not sure if >> the problem is something kernel developers can solve. >> >> On a laptop ASUS TP500LN, I have a wireless pcie card mt7630e from >> mediatek. It is a wifi/bluetooth combo. >> >> The driver is not in the kernel, but mediatek provides it for linux >> from the download site >> http://www.mediatek.com/en/downloads/ >> >> The driver does not support kernel 3.16 and above. I followed the >> instructions at >> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1220146 >> >> The module compiles and loads succesfully. I followed the post by >> tobias bora from the ubuntu bug. It compiles on kernel version 3.16 >> and above (tried up to 3.19). >> >> Like the rest on the ubuntu bug list, the wifi works and I connect >> succesfully, but ksoftirqd gets 100% cpu on one of the cores. >> >> Shall I open a bug report? I have contacted mediatek twice but they >> haven't replied. I hope it is something you can look at. > > > Due to the fact that the driver is not in the kernel, it is not possible to > file a bug with anyone but the vendor. > > It is possible that someone on this list with Mediatek experience may be > able to help you, but there is no certainty. That is the downside of using a > vendor driver. > > As the specs for that computer specify "integrated 802.11 b/g/n", it is > probably not possible to change that device. I suggest that you purchase an > inexpensive USB wifi stick to provide wifi on this computer. If you do so, > you will be aware enough to check for Linux compatibility. > > Larry >