From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 29FEAC433EF for ; Wed, 15 Sep 2021 13:03:21 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E0A8F610A2 for ; Wed, 15 Sep 2021 13:03:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org E0A8F610A2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D3D196E928; Wed, 15 Sep 2021 13:03:18 +0000 (UTC) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id 953AF6E925; Wed, 15 Sep 2021 13:03:17 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10107"; a="201813672" X-IronPort-AV: E=Sophos;i="5.85,295,1624345200"; d="scan'208";a="201813672" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Sep 2021 06:03:11 -0700 X-IronPort-AV: E=Sophos;i="5.85,295,1624345200"; d="scan'208";a="544916455" Received: from vmastnak-mobl1.ger.corp.intel.com (HELO localhost) ([10.251.214.245]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Sep 2021 06:02:49 -0700 From: Jani Nikula To: Randy Dunlap , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: Re: [Intel-gfx] Intel UHD resolutions In-Reply-To: Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo References: Date: Wed, 15 Sep 2021 16:02:46 +0300 Message-ID: <87fsu6xa89.fsf@intel.com> MIME-Version: 1.0 Content-Type: text/plain X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Fri, 10 Sep 2021, Randy Dunlap wrote: > Hi, > > I would like to use QHD resolution (2560x1440) with my shiny new > computer and display. That resolution works if I boot Windows 10 > (cough). > > What do I need to do to use that resolution in Linux? > > I first tried openSUSE 15.3 (kernel 5.3.18-59.19-default) > then I build a v5.14 kernel and tried that. > Both of them max out at FHD (1920x1080). > > I am booting with "i915.force_probe=4c8a" on the kernel command line. I'm guessing you're hitting some dual mode adapter limit. Please file a bug over at [1], add drm.debug=14 module parameter, and attach dmesg from boot to hitting the issue. BR, Jani. [1] https://gitlab.freedesktop.org/drm/intel/issues/new -- Jani Nikula, Intel Open Source Graphics Center