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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 21ECEC433F5 for ; Thu, 12 May 2022 06:23:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350280AbiELGXc (ORCPT ); Thu, 12 May 2022 02:23:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45772 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350109AbiELGXa (ORCPT ); Thu, 12 May 2022 02:23:30 -0400 Received: from mail-oi1-x230.google.com (mail-oi1-x230.google.com [IPv6:2607:f8b0:4864:20::230]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1F922590AE for ; Wed, 11 May 2022 23:23:27 -0700 (PDT) Received: by mail-oi1-x230.google.com with SMTP id q10so5284226oia.9 for ; Wed, 11 May 2022 23:23:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=e3lMmzLEEo9uKNn+GEq/CC8Y3S70VLZ4rzRZ6Vhxax8=; b=AcV6S/7xzY8/8o4h54VXALSo/shWLG3oww8MEP9PGssn7ELQYftuYQUdiOZyRs0R0w jCHf0TClGN1WalShLaibVLoPPBjqkEnIucdASH8dTvUCocPmT52EvlYDlxtNYCMw86lo Ivuu2mH3n8LyBXo+EzfwJgGtvqELVvufW+jt5uvkZu8Nofl319WNepcuHHAYVbh3T1Eg n74mT+G9rK73Qz0PvFY6kmmQOHqrS7/ayPtF6VrsK+onSVVH/ZDeyZmWbkFcW154tzJh qf3jzLRy3j3sWZ5/39S0iuk85IQSGwWkFwpSgwOugVL5AA3CZentrJt85OWXCAxO/33X /cnw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=e3lMmzLEEo9uKNn+GEq/CC8Y3S70VLZ4rzRZ6Vhxax8=; b=5/HOWL1f22E4S88g29SddoKfLeYVf0Cw/R7UwMdZFzRjn2KUpbC4tePKZwF3cAoryz FHIpIKlNpkaRpgTHkQ74ImV4VSpZYFE3IBK48cAJj7EH2o1jbMc7mnJdq9TjWxi4c5OL w6YMOzkiP97o15QI6vSDUUYp1odI/Z3d0B5IvDzDRvJ3jhAE3R/qR9w9MgAbah/MvQhz 5psk2uiXsLs1ujITl8zXqaQDjg2smVPV5w/WS30mww6ifODU1vL0mniRuJinwywNlhQ+ 8D43iuy3zHwnnwnpe0eC4CL3WrG1dIIVCkZ+1v+Q3z8t0e6cJlUPCGzUD4LPNgqoqkAI tfMw== X-Gm-Message-State: AOAM531+l9mQybFHheSF1vtpk7O0le3Bk0Ed5Z6mYMoD2UScJvBmy+pl 4s35jR1nmwjY6PKMRB63f0oYJkPUN218768T+C1iwIR5 X-Google-Smtp-Source: ABdhPJzOQaQ5Br/k+UDB2/KVFCykTN4kEL/HLQaRtK0cjeA7fbWIF2VeuYyQ+IC1IZEu+KMbYKNVGo0SnaJJbBzJ/r0= X-Received: by 2002:a05:6808:1927:b0:326:9b99:abb6 with SMTP id bf39-20020a056808192700b003269b99abb6mr4446037oib.255.1652336606291; Wed, 11 May 2022 23:23:26 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: "David F." Date: Wed, 11 May 2022 23:23:15 -0700 Message-ID: Subject: Fwd: Waking from sleep results in no video? To: linux-fbdev@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org Hello, I have a boot disk using framebuffer video. If I put the system to deep mem sleep via: echo -n mem > /sys/power/state Then the system wakes (either by having to press the power button or keyboard or sometimes it just comes back on) and while I can use the keyboard and type things I can tell are working, the video screen stays black. I tried on multiple systems with different video adapters and even connectors, one using HDMI, another DVI, another old VGA. In no case does the video come back on. The monitors just say nothing detected. Is there any trick to get the frame buffer video working again? Is there any kernel config options I should be including in the build for it to work with power management? Thanks!!