From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751431AbdKTWPz (ORCPT ); Mon, 20 Nov 2017 17:15:55 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:32985 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751154AbdKTWPx (ORCPT ); Mon, 20 Nov 2017 17:15:53 -0500 Date: Mon, 20 Nov 2017 23:15:51 +0100 From: Pavel Machek To: pali.rohar@gmail.com, sre@kernel.org, kernel list , linux-arm-kernel , linux-omap@vger.kernel.org, tony@atomide.com, khilman@kernel.org, aaro.koskinen@iki.fi, ivo.g.dimitrov.75@gmail.com, patrikbachan@gmail.com, serge@hallyn.com, abcloriens@gmail.com, clayton@craftyguy.net, martijn@brixit.nl, sakari.ailus@linux.intel.com Subject: Nokia N900: Funny screen effects, v4.14 with certain configs Message-ID: <20171120221550.GA13322@amd> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="ibTvN161/egqYuK8" Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --ibTvN161/egqYuK8 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! I'm trying to find common configuration for N900, N9 and N950. =2E..and I found that N900, at least with DRM configuration, is flakey. Depending on exact .config, and exact way I boot it (timing of 0xffff) display either works or just shows moving horizontal stripes. In particular, ondemand cpufreq seems to be required for display to work. Ouch. Yes. If someone knows what is going on there, or has some better understanding, let me know. I do have other configuration that seems to work 100% of time... unfortuantely that one is useless on N9/N950. Best regards, Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --ibTvN161/egqYuK8 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAloTVBYACgkQMOfwapXb+vL+jgCgtMJHFol5oZjRkrfWZuCgA2aA Zv0AnjgQor7k/m5nfEQKYUbezfofRIov =Pyjd -----END PGP SIGNATURE----- --ibTvN161/egqYuK8--