From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753782AbaLHEIi (ORCPT ); Sun, 7 Dec 2014 23:08:38 -0500 Received: from imap.thunk.org ([74.207.234.97]:44575 "EHLO imap.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752005AbaLHEIh (ORCPT ); Sun, 7 Dec 2014 23:08:37 -0500 Date: Sun, 7 Dec 2014 23:08:29 -0500 From: "Theodore Ts'o" To: Dave Airlie Cc: Daniel Vetter , dri-devel , LKML , Jani Nikula Subject: Re: WARNING: /usr/projects/linux/linux/drivers/gpu/drm/i915/intel_pm.c:6585 intel_display_power_put+0x4b/0x116 [i915]() Message-ID: <20141208040829.GA5142@thunk.org> Mail-Followup-To: Theodore Ts'o , Dave Airlie , Daniel Vetter , dri-devel , LKML , Jani Nikula References: <20140902040527.GA5508@thunk.org> <20141208003433.GA3353@thunk.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: tytso@thunk.org X-SA-Exim-Scanned: No (on imap.thunk.org); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Dec 08, 2014 at 12:32:01PM +1000, Dave Airlie wrote: > > I suspect a lot of the problems are just that xfce isn't sufficiently handling > randr events, and it is getting out of sync, it is like hotplug networking > before NetworkManager etc. Yes, I've seen this on XFCE 4.11 (in Ubuntu), although I haen't seen it in XFCE 4.10 (in Debian). In 4.11, when xfce gets out of sync, xrandr --auto will allow me to enable the display, even when xfce4-display-settings does not. However, on my T540p with the monitors connected via the dock, which is the problem I was describing here, xrandr --auto does *not* fix things up. So I think it's a different problem, since I can see this problem even if I don't use xfce4-display-settings, and just use xrandr directly. - Ted