From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from www1246.sakura.ne.jp ([219.94.162.56]:48683 "EHLO www1246.sakura.ne.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750849AbcJXFvd (ORCPT ); Mon, 24 Oct 2016 01:51:33 -0400 From: Xuan Truong Nguyen Subject: Re: The failure summary report of GEN2 for linux stable v4.8 To: Laurent Pinchart References: <57A46D20.7040106@jinso.co.jp> <1557504.I3EyWl6QE0@avalon> <5754513.jIbGsJMV7d@avalon> Cc: duclm , ryusuke.sakato.bx@renesas.com, kuninori.morimoto.gx@renesas.com, magnus.damm@gmail.com, geert+renesas@glider.be, h-inayoshi@jinso.co.jp, yoshihiro.shimoda.uh@renesas.com, nv-dung@jinso.co.jp, cm-hiep@jinso.co.jp, laurent.pinchart+renesas@ideasonboard.com, horms+renesas@verge.net.au, linux-renesas-soc@vger.kernel.org, wsa@sang-engineering.com Message-ID: <50d78e81-1e89-c34f-4dcb-c128902b2e1a@jinso.co.jp> Date: Mon, 24 Oct 2016 14:51:28 +0900 MIME-Version: 1.0 In-Reply-To: <5754513.jIbGsJMV7d@avalon> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-renesas-soc-owner@vger.kernel.org List-ID: Hi laurent. > Could you please tell me what you're using to test the display ? Sorry if I misunderstand what you wanted to know. I'm using the LG 23MP48HQ-P and VIERA TH-L19C3-P - Panasonic (White) http://www.lg.com/ca_en/desktop-monitors/lg-23MP48HQ-P http://panasonic.jp/viera/p-db/TH-L19C3.html I tested using the command: bmap /dev/fb0 picture.bmp on M2 board (Koelsch) the image is displayed clearly. but on H2 board (Lager) the image is displayed not clearly. I also retested on V4.9-rc2 and something weird happened. for VIERA TH-L19C3-P: - if I boot the board before inserting the cable, the display is not working. - but if I inserted the cable before booting, it works, but the image is not displayed clearly. for LG 23MP48HQ-P: - if I boot the board before inserting the cable, the driver probes successfully. but after inserting the cable, the display almost does not work (no signal). - if I boot the board with the cable inserted in advance, the driver fails on probe. I checked with dmesg: root@linaro-nano:~# dmesg | grep rcar-du [ 5.749231] rcar-du feb00000.display: failed to allocate buffer with size 8294400 [ 5.771675] rcar-du feb00000.display: Failed to set initial hw configuration. [ 5.793075] rcar-du fdmesg | grep rcar-dueb00000.display: failed to initialize DRM/KMS (-12) [ 5.813564] rcar-du: probe of feb00000.display failed with error -12 root@linaro-nano:~# The cables are ok, two screens work normally on Ubuntu. thanks and best regards JINSO/Truong